<PAGE>   1


                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                    FORM 10-Q

(Mark One)

[X] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE
    ACT OF 1934

For the quarterly period ended March 31, 2000

                                       OR

[ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE
    ACT OF 1934

For the transition period from                        to
                               ----------------------    ---------------------

                         Commission File Number: 0-19594

                          INSURANCE AUTO AUCTIONS, INC.
             (Exact name of registrant as specified in its charter)

Illinois                                                            95-3790111
------------------------------------------------------------------------------
(State or other jurisdiction of           (I.R.S. Employer Identification No.)
incorporation or organization)

850 East Algonquin Road, Suite 100, Schaumburg, Illinois            60173-3855
------------------------------------------------------------------------------
(Address of principal executive offices)                            (Zip Code)

                                 (847) 839-3939
------------------------------------------------------------------------------
              (Registrant's telephone number, including area code)


     Indicate by check mark whether the registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days. |X| Yes |_| No


                      APPLICABLE ONLY TO CORPORATE ISSUERS

Number of shares outstanding of each of the issuer's classes of common stock, as
of April 30, 2000:

             Class                              Outstanding April 30, 2000
             -----                              --------------------------
Common Stock, $0.001 Par Value                       11,591,246 shares


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                                      INDEX

                          INSURANCE AUTO AUCTIONS, INC.

                                                                   PAGE NUMBER
                                                                   -----------

PART I.  FINANCIAL INFORMATION....................................      3

Item 1.  Financial Statements (Unaudited).........................      3

         Condensed Consolidated Balance Sheets
              as of March 31, 2000 and December 31, 1999..........      3
         Condensed Consolidated Statements of Earnings for the
              Three Month Periods ended March 31, 2000 and
              March 31, 1999......................................      4
         Condensed Consolidated Statements of Cash Flows for the
              Three Month Periods ended March 31, 2000 and
              March 31, 1999......................................      5
         Notes to Condensed Consolidated Financial Statements.....      6

Item 2.  Management's Discussion and Analysis of Financial
              Condition and Results of Operations.................      6

Item 3.  Quantitative and Qualitative Disclosures
              about Market Risk...................................     12

PART II.  OTHER INFORMATION.......................................     12

Item 1.  Legal Proceedings........................................     12

Item 2.  Changes in Securities....................................     12

Item 3.  Defaults upon Senior Securities..........................     12

Item 4.  Submission of Matters to a Vote of Security Holders......     12

Item 5.  Other Information........................................     12

Item 6.  Exhibits and Reports on Form 8-K.........................     12

SIGNATURES .......................................................     13

                                       2

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                          INSURANCE AUTO AUCTIONS, INC.
                                AND SUBSIDIARIES
                      CONDENSED CONSOLIDATED BALANCE SHEETS

                                             MARCH  31,           DECEMBER 31,
                                                2000                  1999
                                           -------------         -------------
                                            (unaudited)
ASSETS

Current assets:
     Cash and cash equivalents             $  14,179,000         $  18,886,000
     Short-term investments                    3,372,000             6,845,000
     Accounts receivable, net                 41,651,000            40,188,000
     Inventories                              12,107,000            11,998,000
     Other current assets                      2,058,000             1,655,000
                                           -------------         -------------
            Total current assets              73,367,000            79,572,000
                                           -------------         -------------


Property and equipment, net                   29,573,000            27,458,000
Investments in marketable securities          17,360,000            11,636,000
Deferred income taxes                          4,250,000             4,338,000
Other assets, principally goodwill, net      129,410,000           125,128,000
                                           -------------         -------------

                                           $ 253,960,000         $ 248,132,000
                                           =============         =============

LIABILITIES AND SHAREHOLDERS' EQUITY

Current liabilities:
     Current installments of
       long-term debt                      $     135,000         $     135,000
     Accounts payable                         31,630,000            33,216,000
     Accrued liabilities                       6,860,000             6,306,000
     Income taxes                              3,374,000             1,226,000
                                           -------------         -------------
         Total current liabilities            41,999,000            40,883,000
                                           -------------         -------------

Long-term debt, excluding current
  installments                                20,029,000            20,180,000
Accumulated postretirement benefits
  obligation                                   3,131,000             3,178,000
Deferred income taxes                          9,161,000             8,605,000
                                           -------------         -------------

         Total liabilities                    74,320,000            72,846,000
                                           -------------         -------------

Shareholders' equity:
Preferred stock, par value of
     $.001 per share
Authorized 5,000,000 shares; none issued.              -                     -
Common stock, par value of $.001 per share
     Authorized 20,000,000 shares;
     issued and outstanding 11,591,246
     and 11,575,010 shares as of
     March 31, 2000 and December 31,
     1999, respectively                           12,000                12,000
Additional paid-in capital                   135,169,000           134,996,000
Retained earnings                             44,459,000            40,278,000
                                           -------------         -------------

         Total shareholders' equity          179,640,000           175,286,000
                                           -------------         -------------

                                           $ 253,960,000         $ 248,132,000
                                           =============         =============

See accompanying notes to condensed consolidated financial statements.


                                       3
`

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                          INSURANCE AUTO AUCTIONS, INC.
                                AND SUBSIDIARIES
                 CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS



                                                  THREE MONTH PERIODS
                                                     ENDED MARCH 31,
                                                     ---------------
                                                2000                 1999
                                           -------------         -------------
                                                       (UNAUDITED)
Net Sales:
     Vehicle sales                         $  54,964,000         $  51,258,000
     Fee income                               31,996,000            28,620,000
                                           -------------         -------------
                                              86,960,000            79,878,000
Cost and expenses:
     Cost of sales                            63,855,000            59,941,000
     Direct operating expenses                15,018,000            13,624,000
     Amortization of acquisition costs           948,000               950,000
                                           -------------         -------------

         Earnings from operations              7,139,000             5,363,000


Other (income) expense:
     Interest expense                            464,000               494,000
     Interest income                            (411,000)             (225,000)
                                           -------------         -------------

         Earnings before income taxes          7,086,000             5,094,000

Income taxes                                   2,905,000             2,241,000
                                           -------------         -------------

         Net earnings                      $   4,181,000         $   2,853,000
                                           =============         =============

Earnings per share:
     Basic                                 $         .36         $         .25
                                           =============         =============
     Diluted                               $         .35         $         .25
                                           =============         =============

Weighted average shares outstanding:
     Basic                                    11,586,000            11,338,000
     Effect of dilutive securities
         -stock options                          200,000                72,000
                                           -------------         -------------
     Diluted                                  11,786,000            11,410,000
                                           =============         =============

See accompanying notes to condensed consolidated financial statements.




                                       4



<PAGE>   5



                          INSURANCE AUTO AUCTIONS, INC.
                                AND SUBSIDIARIES
                 CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
                                   (UNAUDITED)

                                                  THREE MONTH PERIODS
                                                     ENDED MARCH 31,
                                           -----------------------------------
                                                2000                  1999
                                           -------------         -------------
Cash flows from operating activities:
Net earnings                               $   4,181,000         $   2,853,000
Adjustments to reconcile net
   earnings to net cash provided by
   operating activities:
     Depreciation and amortization             2,384,000             2,223,000
     Gain on disposal of fixed assets            (13,000)               (9,000)
     Change in assets and liabilities
         (net of effects of
         acquired companies):
     (Increase) decrease in:
       Investments, net                       (2,251,000)            2,753,000
       Accounts receivable, net               (1,020,000)           (1,387,000)
       Inventories                              (109,000)           (1,510,000)
       Other current assets                     (403,000)              (40,000)
       Other assets                              111,000               (21,000)
     Increase (decrease) in:
       Accounts payable                       (1,894,000)            3,206,000
       Accrued liabilities                       504,000              (189,000)
       Income taxes payable                    2,792,000             2,167,000
                                           -------------         -------------
         Total adjustments                       101,000             7,193,000
                                           -------------         -------------

     Net cash provided by
       operating activities                    4,282,000            10,046,000
                                           -------------         -------------

Cash flows from investing activities:
   Capital expenditures                       (3,032,000)           (1,946,000)
   Proceeds from disposal of fixed assets         21,000                31,000
   Payments made in connection with
       acquired companies, net of
       cash acquired                          (6,000,000)                    -
                                           -------------         -------------

       Net cash provided by
         investing activities                 (9,011,000)           (1,915,000)
                                           -------------         -------------

Cash flows from financing activities:
   Proceeds from issuance of common stock        173,000                78,000
   Principal payments of long-term debt         (151,000)              (87,000)
                                           -------------         -------------

       Net cash provided by (used in)
         financing activities                     22,000                (9,000)
                                           -------------         -------------

Net (decrease) increase in cash               (4,707,000)            8,122,000

Cash and cash equivalents at
   beginning of period                        18,886,000            11,682,000
                                           -------------         -------------

Cash and cash equivalents at end of period $  14,179,000         $  19,804,000
                                           =============         =============

Supplemental disclosures of cash flow information: Cash paid during the year
   for:
     Interest                              $     860,000         $     861,000
                                           =============         =============
     Income taxes                          $     112,000         $     111,000
                                           =============         =============

See accompanying notes to condensed consolidated financial statements.


                                       5

<PAGE>   6


                          INSURANCE AUTO AUCTIONS, INC.
                                 AND SUBSIDIARY

              NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
                                   (UNAUDITED)

1.     GENERAL

       The unaudited condensed consolidated financial statements of Insurance
       Auto Auctions, Inc. and its subsidiaries (collectively, the "Company")
       have been prepared on the same basis as the audited consolidated
       financial statements and, in the opinion of the Company, reflect all
       adjustments (consisting of normal recurring adjustments, except as
       otherwise described in Note 3) necessary for a fair presentation for each
       of the periods presented. The results of operations for interim periods
       are not necessarily indicative of results for full fiscal years.

       As contemplated by the Securities and Exchange Commission ("SEC") under
       Rule 10-01 of Regulation S-X, the accompanying consolidated financial
       statements and related notes have been condensed and do not contain
       certain information that is included in the Company's annual consolidated
       financial statements and notes thereto. For further information, refer to
       the consolidated financial statements and notes thereto included in the
       Company's annual report on Form 10-K for the year ended December 31,
       1999.


2.     INCOME TAXES

       Income taxes were computed using the effective tax rate estimated to be
       applicable for the full fiscal year, which is subject to ongoing review
       and evaluation by the Company.

3.     ACQUISITION

         In March 2000, the Company acquired two companies, Wisconsin Auto
         Auction, L.L.C. of Milwaukee and Valley Auto Pool, Inc. of Appleton,
         Wisconsin, for $6.0 million cash. These acquisitions were accounted for
         as a purchase, and the results of their operations are included in the
         Company's consolidated financial statements from the date of
         acquisition.


ITEM 2.  MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
         RESULTS OF OPERATIONS.

This report on Form 10-Q contains forward-looking information that is subject to
certain risks, trends and uncertainties that could cause actual results to
differ materially from those projected, expressed or implied by such forward
looking information. In some cases, you can identify forward looking statements
by our use of words such as "may, will, should, anticipates, believes, expects,
plans, future, intends, could, estimate, predict, potential or contingent," the
negative of these terms or other similar expressions. The Company's actual
results could differ materially from those discussed or implied herein. Factors
that could cause or contribute to such differences include, but are not limited
to, those discussed in "Factors That May Affect Future Results" below and the
Company's annual report, Form 10K for the fiscal year ended December 31, 1999.
Among these risks are legislative acts, changes in the market value of salvage,
competition, quality and quantity of inventory available from suppliers, and
dependence on key insurance company suppliers.


OVERVIEW

              The Company offers insurance companies and other vehicle suppliers
cost-effective salvage processing solutions through a variety of different
methods of sale, including percentage of sale


                                       6


<PAGE>   7




consignment, fixed fee consignment, and purchase agreement. Under the percentage
of sale consignment and fixed fee sales methods, the vehicle is not owned by the
Company and only the fees associated with the processing and sale of the vehicle
are recorded in net sales. The percentage of sale consignment method offers
potentially increased profits over fixed fee consignment by providing incentive
to both the Company and the salvage provider to invest in vehicle enhancements
thereby maximizing the vehicle selling prices. Under the purchase agreement
sales method, the vehicle is owned by the Company and the sales price of the
vehicle is recorded in revenue. By assuming some of the risk inherent in owning
the salvage vehicle instead of selling on a consignment basis, the Company is
potentially able to increase profits by improving the value of the salvage
vehicle prior to the sale.

              Under the purchase agreement method, IAA generally pays the
insurance company a pre-determined percentage of the ACV to purchase the
vehicle. ACV's are the estimated pre-accident fair value of a vehicle, adjusted
for additional equipment, mileage and other factors. Because the Company's
purchase price is fixed by contract, changes in ACV's or in the market or
auction prices for salvage vehicles have an impact on the profitability of the
sale of vehicles under the purchase agreement method. However, if increases in
used car prices and ACV's are not associated with a corresponding increase in
prices at salvage auctions, there can be a negative impact on the profitability
of purchase agreement sales. To mitigate these risks, the Company has adjustment
and risk-sharing clauses in its standard purchase agreement contracts designed
to provide some protection to the Company and its customers from certain
unexpected, significant changes in the ACV/salvage price relationship.

              The Company has added adjustment and risk-sharing clauses to its
new standard purchase agreement contracts designed to provide some protection to
the Company and its customers from certain unexpected, significant changes in
the ACV/salvage price relationship.

              Since its initial public offering, the Company has grown primarily
through a series of acquisitions to now include 52 locations as of March 31,
2000.

              The Company's operating results are subject to fluctuations,
including quarterly fluctuations, that can result from a number of factors, some
of which are more significant for sales under the purchase agreement method. See
"Factors That May Affect Future Results" below for a further discussion of some
of the factors that affect or could affect the Company's business, operating
results and financial condition.

RESULTS OF OPERATIONS

Three Months Ended March 31, 2000 Compared to the Three Months Ended
March 31, 1999

              Net sales of the Company increased to $87.0 million for the three
months ended March 31, 2000, from $79.9 million for the same three month period
in 1999, a 9% increase. This included a 7% increase in vehicle sales for cars
sold under a purchase agreement and a 12% increase in fee income versus the
prior year. Auction proceeds increased to $175.7 million in the first quarter of
2000 from $166.0 million in the comparable period in 1999.

              For the first quarter of 2000, the percentage of sale method
accounted for 18% of total units sold versus 14% for the same period in 1999.
The purchase agreement method of sales accounted for 28% of total units sold,
the same as first quarter 1999.

              Gross profit increased 16% to $23.1 million for the three months
ended March 31, 2000, from $19.9 million for the same period in 1999. The
increase in gross profit is the result of higher volumes and increased gross
profit per unit compared to the same period of 1999. The increase in gross
profit per unit is primarily the result of the continued rollout of several
gross profit enhancement initiatives.

              Direct operating expenses increased to $15.0 million for the three
months ended March 31, 2000, from $13.6 million for the same period in 1999. The
increase is the result of higher earned management incentives, increased
facility related costs and a general increase in operating expenses due to
increased vehicle enhancement services.




                                       7


<PAGE>   8


              Interest expense was $0.5 million for both the three month
periods, March 31, 2000 and 1999. Interest income increased to $0.4 million for
the three month period ended March 31, 2000, from $0.2 million for the
comparable period in 1999. The increase is the result of an increase in cash
equivalents and short-term investments.

              Income taxes increased to $2.9 million for the three months ended
March 31, 2000, from $2.2 million for the comparable period in 1999. This
increase is the result of the increase in earnings. The Company's effective tax
rate for the three months ended March 31, 2000 was 41% versus 44% for the
comparable period in 1999. The effective tax rate is subject to ongoing review
and evaluation by the Company.

              The Company's net earnings were $4.2 million for the three months
ended March 31, 2000, a 47% increase from $2.9 million for the comparable period
in 1999.


FINANCIAL CONDITION AND LIQUIDITY

              At March 31, 2000, the Company had current assets of $73.4
million, including $14.2 million of cash and cash equivalents and $3.4 million
of short-term investments. Current liabilities were $42.0 million. The Company
had working capital of $31.4 million at March 31, 2000, a $7.3 million decrease
from December 31, 1999.

              At March 31, 2000, the Company's indebtedness consisted mostly of
8.6% Senior Notes of $20.0 million and amounts due to the sellers related to
certain acquisitions. There were no borrowings outstanding on the Revolving Line
of Credit Facility at March 31, 2000.

              Capital expenditures were approximately $3.0 million for the three
months ended March 31, 2000. These capital expenditures primarily included
upgrading and expanding the Company's management information system and the
Company's facilities. The Company currently leases most of its facilities and
other properties.

              In March 2000, the Company acquired two companies, Wisconsin
Auto Auction, L.L.C. of Milwaukee and Valley Auto Pool, Inc. of Appleton,
Wisconsin, for $6.0 million cash.

              The Company believes that cash generated from operations and its
borrowing capacity under its $15 million revolving line of credit will be
sufficient to fund capital expenditures and provide adequate working capital for
operations for the next twelve months. Part of the Company's plan is continued
growth possibly through new facility start-ups, acquisitions, and the
development of new claims processing services. At some time in the future, the
Company may require additional financing. There can be no assurance that
additional financing, if required, will be available on favorable terms.

              The Company's operating results have not historically been
materially affected by inflation.

OTHER

              On February 16, 2000, an Emery Worldwide DC-8 cargo jet crashed
into the Company's facility in Rancho Cordova, California (the "Rancho Branch").
All three Emery crew members died, but there were no injuries or fatalities on
the ground.

              Approximately 850 vehicles at the Rancho Branch awaiting sale by
the Company were destroyed or damaged by the crash and the ensuing fire
("Inventory Damage"). The Emery plane crash and fire caused the release of
hazardous substances at the crash site, necessitating certain environmental
remediation activities at the site which are ongoing.




                                       8



<PAGE>   9



              The Company has made an initial claim with its insurance carrier
for the Inventory Damage. In addition, because the Rancho Branch was closed for
a brief period after the crash, the Company has made an initial "business
interruption" claim with its insurance carrier. The Company believes it has
adequate insurance coverage in place to cover these damages.

              The Company also intends to make a claim with its insurance
carrier for property damage at the Rancho Branch, including costs of
environmental remediation. Coverage under the Company's insurance policies for
environmental remediation may, however, be limited and less than necessary to
cover all environmental remediation costs. The Company will also seek recovery
of one-half of the cost of environmental remediation from the landlord of the
Rancho Branch pursuant to the terms of a lease. Environmental investigation and
testing of the site has not yet been completed.

              The Company believes that Emery Worldwide and others potentially
responsible for the crash (the "Responsible Parties") will ultimately be held
responsible for any and all damages, including environmental costs, incurred by
the Company as a result of the crash. Accordingly, the Company has not
recognized any liability as of March 31, 2000. The Company intends to vigorously
pursue any and all claims under applicable law against the Responsible Parties
to recover its damages.

              In light of the availability of adequate insurance coverage and
its claims against the Responsible Parties, whom the Company believes have
adequate financial resources, the Company does not believe the crash will have a
material adverse effect on its financial position or future operating results,
although no assurance can be given in this regard.


FACTORS THAT MAY AFFECT FUTURE RESULTS

              The Company operates in a changing environment that involves a
number of risks, some of which are beyond the Company's control. The following
discussion highlights some of these risks.

              Quarterly Fluctuations. The Company's operating results have in
the past and may in the future fluctuate significantly depending on a number of
factors, some of which are more significant for sales under the purchase
agreement method. These factors include changes in the market value of salvage
vehicles, attendance at salvage auctions, delays or changes in state title
processing, fluctuations in ACVs of salvage vehicles, changes in regulations
governing the processing of salvage vehicles, general weather conditions and the
availability and quality of salvage vehicles. The Company is also dependent upon
receiving a sufficient number of total loss vehicles as well as recovered theft
vehicles to sustain its profit margins. Factors which can effect the number of
vehicles received include: reduction of policy writing by insurance providers
which would affect the number of claims over a period of time, and changes in
direct repair procedures that would reduce the number of newer less damaged
total loss vehicles that tend to have the higher salvage values. Additionally in
the last few years there has been a declining trend in theft occurrences. As a
result, the Company believes that period-to-period comparisons of its results of
operations are not necessarily meaningful and should not be relied upon as any
indication of future performance. In addition, revenues for any future quarter
are not predictable with any significant degree of accuracy, while the Company's
expense levels are relatively fixed. If revenue levels are below expectations,
operating results are likely to be adversely affected. Due to all of the
foregoing factors, it is likely that in some future quarters the Company's
operating results will be below the expectations of public market analysts and
investors.

              Quality and Quantity of Inventory Available from Suppliers. The
Company is dependent upon receiving a sufficient number of total loss vehicles
as well as recovered theft vehicles to sustain its profit margins. Factors which
can effect the number of salvage vehicles received include the reduction of
policy writing by insurance providers which would affect the number of claims
over a period of time, and changes in direct repair procedures that would reduce
the number of newer less-damaged total loss vehicles that tend to have higher
salvage values. The decreases in the quality and quantity of inventory, and in
particular the availability of newer and less-damaged vehicles, are further
aggravated under the purchase


                                       9


<PAGE>   10



agreement method of salvage and can have a material adverse effect on the
operating results and financial condition of the Company.

              Competition. Historically, the automotive salvage industry has
been highly fragmented. As a result, the Company faces intense competition for
the supply of salvage vehicles from vehicle suppliers, as well as competition
from processors of vehicles from other regional salvage pools. These regional
salvage pools generally process vehicles under the fixed fee consignment method
and generally do not offer the full range of services provided by the Company.
The salvage industry has recently experienced consolidation, however, and the
Company believes its principal publicly-held competitor is Copart. Copart has
completed a number of acquisitions of regional salvage pools and competes with
IAA in most of IAA's geographic markets. Due to the limited number of vehicle
suppliers, competition is intense for salvage vehicles from Copart and regional
suppliers. It is also possible that the Company may encounter further
competition from existing competitors and new market entrants that are
significantly larger and have greater financial and marketing resources. Other
potential competitors could include used car auction companies, providers of
claims software to insurance companies, certain salvage buyer groups and
insurance companies, some of which presently supply auto salvage to IAA. While
most insurance companies have abandoned or reduced efforts to sell salvage
without the use of service providers such as the Company, they may in the future
decide to dispose of their salvage directly to customers. There can be no
assurance that the Company will be able to compete successfully against current
or future competitors or that competitive pressures faced by the Company will
not have a material adverse effect on its operating results and financial
condition.

              Dependence on Key Insurance Company Suppliers. Historically, a
limited number of insurance companies has accounted for a substantial portion of
the Company's revenues. For example, in 1999, vehicles supplied by the Company's
three largest suppliers accounted for approximately 43% of the Company's unit
sales. The largest suppliers, State Farm Insurance, Farmers Insurance, and
Allstate, each accounted for approximately 16%, 14%, and 13%, respectively, of
the Company's unit sales. A loss or reduction in the number of vehicles from any
of these suppliers, or adverse change in the agreements that such suppliers have
with the Company, could have a material adverse effect on the Company's
operating results and financial condition.

              Purchase Agreement Method of Sale. The Company has entered into a
number of purchase agreements, including agreements with its most significant
insurance suppliers, that obligate the Company to purchase most salvage vehicles
offered to it at a formula percentage of ACV. From 1993 to 1996, increased ACVs
on which the Company's costs are based reduced the profitability that the
Company realizes on purchase agreement contracts. This could occur again if used
car prices increase faster than selling prices of salvage vehicles at auction.
The Company has renegotiated most of its agreements with certain of these
suppliers. Further increases in ACVs or declines in the market or auction prices
for salvage vehicles could have a material adverse effect on the Company's
operating results and financial condition. The Company has added adjustment and
risk-sharing clauses to its new standard purchase agreement contracts designed
to provide some protection to the Company and its customers from certain
unexpected, significant changes in ACV's that are not accompanied by a
comparable increase in sales prices.

              Governmental Regulation. The Company's operations are subject to
regulation, supervision and licensing under various federal, state and local
statutes, ordinances and regulations. The acquisition and sale of totaled and
recovered theft vehicles is regulated by state motor vehicle departments in each
of the locations in which the Company operates. Changes in governmental
regulations or interpretations of existing regulations can result in increased
costs, reduced salvage vehicle prices and decreased profitability for the
Company. For example, the Company believes legislation currently being
considered by Congress could have a negative impact on the number of buyers
attending an auction as well as increase some of the costs to those buyers. This
legislation could increase governmental regulation of certain operations of the
Company. In addition to the regulation of sales and acquisitions of vehicles,
the Company is also subject to various local zoning requirements with regard to
the location of its auction and storage facilities. These zoning requirements
vary from location to location. Failure to comply with present or future
regulations or changes in existing regulations could have a material adverse
effect of the Company's operating results and financial condition.




                                       10


<PAGE>   11


              Provision of Services as a National or Regional Supplier. The
provision of services to insurance company suppliers on a national or regional
basis requires that the Company expends resources and dedicate management to a
small number of individual accounts, resulting in a significant amount of fixed
costs. The development of a referral based national network service, in
particular, has required the devotion of financial resources without immediate
reimbursement of such expenses by the insurance company suppliers.

              Integration and Expansion of Facilities. The Company seeks to
increase sales and profitability through acquisition of other salvage auction
facilities, new site expansion and the increase of salvage vehicle volume at
existing facilities. There can be no assurance that the Company will continue to
acquire new facilities on terms economical to the Company or that the Company
will be able to add additional facilities on terms economical to the Company or
that the Company will be able to increase revenues at newly acquired facilities
above levels realized prior to acquisition. The Company's ability to achieve
these objectives is dependent, among other things, on the integration of new
facilities, and their information systems, into its existing operations, the
identification and lease of suitable premises and the availability of capital.
There can be no assurance that this integration will occur, that suitable
premises will be identified or that additional capital will be available to fund
expansion and integration of the Company's business. Any delays or obstacles in
this integration process could have a material adverse effect on the Company's
operating results and financial condition. Furthermore, the Company has limited
sources of additional capital available for acquisitions, expansions and
start-ups. The Company's ability to integrate and expand its facilities will
depend on its ability to identify and obtain additional sources of capital to
finance such integration and expansion. In the future, the Company will be
required to continue to improve its financial and management controls, reporting
systems and procedures on a timely basis and expand, train and manage its
employee work force. The failure to improve these systems on a timely basis and
to successfully expand and train the Company's work force could have a material
adverse effect on the Company's operating results and financial condition.

              Volatility of Stock Price. The market price of the Company's
common stock has been and could continue to be subject to significant
fluctuations in response to various factors and events, including variations in
the Company's operating results, the timing and size of acquisitions and
facility openings, the loss of vehicle suppliers or buyers, the announcement of
new vehicle supply agreements by the Company or its competitors, changes in
regulations governing the Company's operations or its vehicle suppliers,
environmental problems or litigation.

              Environmental Regulation. The Company's operations are subject to
federal, state and local laws and regulations regarding the protection of the
environment. In the salvage vehicle auction industry, large numbers of wrecked
vehicles are stored at auction facilities for short periods of time. Minor
spills of gasoline, motor oils and other fluids may occur from time to time at
the Company's facilities and may result in soil, surface water or groundwater
contamination. Petroleum products and other hazardous materials are contained in
aboveground or underground storage tanks located at certain of the Company's
facilities. Waste materials such as waste solvents or used oils are generated at
some of the Company's facilities and are disposed of as nonhazardous or
hazardous wastes. The Company believes that it is in compliance in all-material
respects with applicable environmental regulations and does not anticipate any
material capital expenditure for environmental compliance or remediation.
Environmental laws and regulations, however, could become more stringent over
time and there can be no assurance that the Company or its operations will not
be subject to significant compliance costs in the future. To date, the Company
has not incurred expenditures for preventive or remedial action with respect to
contamination or the use of hazardous materials that have had a material adverse
effect on the Company's operating results or financial condition. The
contamination that could occur at the Company's facilities and the potential
contamination by previous users of certain acquired facilities create the risk,
however, that the Company could incur substantial expenditures for preventive or
remedial action, as well as potential liability arising as a consequence of
hazardous material contamination, which could have a material adverse effect on
the Company's operating results and financial condition.




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<PAGE>   12



ITEM 3.  QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK.


         The Company had approximately $20.7 million of investments as of March
31, 2000. These investments largely consisted of state government obligations
and had either variable rates of interest or stated interest rates ranging from
3.75% to 5.3%. The Company's investments are exposed to certain market risks
inherent with such assets. This risk is mitigated by the Company's policy of
investing in securities with high credit ratings and investing through major
financial institutions with high credit ratings.

         The Company has senior notes payable of $20,000,000 at an interest rate
of 8.6%. The terms of the note agreement are such that pre-payment of such debt
may not be advantageous to the Company in the event that funds may be available
to the Company at a lower rate of interest.


PART II. OTHER INFORMATION.


ITEM 1.  LEGAL PROCEEDINGS.  INAPPLICABLE

ITEM 2.  CHANGES IN SECURITIES.  INAPPLICABLE

ITEM 3.  DEFAULTS UPON SENIOR SECURITIES.  INAPPLICABLE

ITEM 4.  SUBMISSION OF MATTERS TO A VOTE ON SECURITY HOLDERS.  INAPPLICABLE

ITEM 5.  OTHER INFORMATION.  INAPPLICABLE

ITEM 6.  EXHIBITS AND REPORTS ON FORM 8-K.

         (a)      EXHIBITS.

                  27.1  Financial Data Schedule

         (b)      REPORTS ON FORM 8-K.  No reports on Form 8-K were filed
                  during the fiscal quarter ending March 31, 2000.



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<PAGE>   13


                                  EXHIBIT INDEX
                                   SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange
Act of 1934, the registrant has duly caused this report to be signed on its
behalf by the undersigned, thereunto duly authorized.


                          INSURANCE AUTO AUCTIONS, INC.




Date: May 15, 2000              By:      /s/ Stephen L. Green
      ------------                 --------------------------------------------
                                Name:    Stephen L. Green
                                Title:   Vice President - Finance,
                                         Chief Financial Officer

                                         (Duly Authorized Officer and Principal
                                         Financial Officer)


                                       13

<PAGE>   14






EXHIBIT NO.
-----------



27.1          Financial Data Schedule






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