Exhibit 34.3



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Report of Independent Registered Public Accounting Firm

To the Management of

Santander Consumer International Puerto
Rico, LLC

We have examined managements assertion, included in the accompanying Managements Assessment of Compliance with SEC Regulation AB
Servicing Criteria, that Santander Consumer International Puerto Rico, LLC (the Company) complied with the servicing criteria set forth in Item 1122(d) of the Securities and Exchange Commissions Regulation AB for all publicly
registered transactions backed by auto loans for which Santander Consumer USA Inc. is the servicer (the Platform), as of December 31, 2017 and for the year then ended, excluding criteria 1122(d)(1)(i), 1122(d)(1)(iii) through
1122(d)(1)(v), 1122(d)(2)(i) through 1122(d)(2)(vii), 1122(d)(3)(i) through 1122(d)(3)(iv), 1122(d)(4)(i) through 1122(d)(4)(v) and 1122(d)(4)(ix) through 1122(d)(4)(xv), which the Company has determined are not applicable to the servicing
activities performed by it with respect to the Platform. As described in managements assertion, for servicing criteria 1122(d)(4)(vi), 1122(d)(4)(vii) and 1122(d)(4)(viii), the Company has engaged various vendors to perform the activities
required by these servicing criteria. The Company has determined that these vendors are not considered servicers as defined in Item 1101(j) of Regulation AB, and the Company has elected to take responsibility for assessing compliance
with the servicing criteria applicable to each vendor as permitted by Compliance and Disclosure Interpretation 200.06 of the SEC Division of Corporation Finances interpretations of the rules adopted under Regulation AB and the Securities Act
and the Exchange Act (Interpretation 200.06). As permitted by Interpretation 200.06, the Company has asserted that it has policies and procedures in place designed to provide reasonable assurance that the vendors activities comply
in all material respects with the servicing criteria applicable to each vendor. The Company is solely responsible for determining that it meets the SEC requirements to apply Interpretation 200.06 for the vendors and related criteria as described in
its assertion, and we performed no procedures with respect to the Companys determination of its eligibility to use Interpretation 200.06. Appendix A to managements assertion identifies the individual asset-backed transactions and
securities defined by management as constituting the Platform. Santander Consumer International Puerto Rico, LLCs management is responsible for its assertion and for the Companys compliance with the applicable servicing criteria. Our
responsibility is to express an opinion on managements assertion about the Companys compliance with the applicable servicing criteria based on our examination.

Our examination was conducted in accordance with the standards of the Public Company Accounting Oversight Board (United States) and in accordance with
attestation standards established by the American Institute of Certified Public Accountants. Those standards require that we plan and perform the examination to obtain reasonable assurance about whether managements assertion about compliance
with the applicable servicing criteria is fairly stated, in all material respects, and, accordingly, included examining, on a test basis, evidence about the Companys compliance with the applicable servicing criteria and performing such other
procedures as we considered necessary in the circumstances. Our examination included testing of selected asset-backed transactions and securities that comprise the Platform, testing of selected servicing activities related to the Platform, and
determining whether the Company processed those selected transactions and performed those selected activities in compliance with the applicable servicing criteria. Our procedures were limited to the selected transactions and servicing activities
performed by the Company during the period covered by this report.



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Our procedures were not designed to detect noncompliance arising from errors that may have occurred prior to or
subsequent to our tests that may have affected the balances or amounts calculated or reported by the Company during the period covered by this report. We believe that our examination provides, and that the evidence we obtained is sufficient and
appropriate to provide, a reasonable basis for our opinion. Our examination does not provide a legal determination on the Companys compliance with the servicing criteria.

In our opinion, managements assertion that Santander Consumer International Puerto Rico, LLC complied with the aforementioned applicable servicing
criteria as of and for the year ended December 31, 2017 for all publicly registered transactions backed by auto loans for which Santander Consumer USA Inc. is the servicer is fairly stated, in all material respects.

/s/ PricewaterhouseCoopers LLP

Dallas, Texas

March 26, 2018