NASCAR Xfinity Series

The **NASCAR Xfinity Series** (**NXS**) is a stock car racing series organized by NASCAR. It is promoted as NASCAR's second-tier circuit to the organization's top level Cup Series. NXS events are frequently held as a support race on the day prior to a Cup Series event scheduled for that weekend.

The series was previously called the **Budweiser Late Model Sportsman Series** in 1982 and 1983, the **NASCAR Busch Grand National Series** from 1984 through 2002, the **NASCAR Busch Series** from 2003 through 2007, and the **NASCAR Nationwide Series** from 2008 through 2014. Since 2015, it is sponsored by Comcast via its consumer cable and wireless brand Xfinity.

## History

The series emerged from NASCAR's Sportsman division, which had been formed in 1950 as NASCAR's short track race division. It was NASCAR's fourth series (after the Modified and Roadster series in 1948 and Strictly Stock Series in 1949). The sportsman cars were not current model cars and could be modified more, but not as much as Modified series cars. It became the **Late Model Sportsman Series** in 1968, and soon featured races on larger tracks such as Daytona International Speedway. Drivers used obsolete Grand National cars on larger tracks but by the inception of the touring format in 1982, the series used older compact cars. Short track cars with relatively small 300 cubic inch V-8 motors were used. Drivers used smaller current year models featuring V6 motors.

The modern-day Xfinity Series was formed in 1982, when Anheuser-Busch sponsored a newly reformed late-model sportsman series with its Budweiser brand. In 1984, the series switched sponsorship to Anheuser-Busch's Busch Beer brand and was renamed the **Busch Grand National Series**.

"Grand National" was dropped from the series' title in 2003 as part of NASCAR's brand identity (the "Grand National" name was later used for the Busch East and Winston West series as part of a nationwide standardization of rules for NASCAR's regional racing; both series are now run under ARCA Menards Series banner after NASCAR purchased the organization in 2018). Anheuser-Busch dropped the sponsorship after the 2007 season; Nationwide Insurance took over the sponsorship for the 2008 season, renaming it the **Nationwide Series**. The Nationwide sponsorship was a seven-year contract, and did not include the banking and mortgage departments of Nationwide. The sponsorship reportedly carried a $10 million commitment for 2008, with 6% annual escalations thereafter.

On September 3, 2014, it was announced that Comcast would become the new title sponsor of the series via its cable television and internet brand Xfinity, renaming it the **Xfinity Series**. In 2016, NASCAR implemented a seven-race Chase system similar to the one used in the NASCAR Cup Series.

Xfinity race fields have varied in the number of drivers. Prior to 2013, the grid size resembled its Cup counterpart with 43 cars per race; that year, it shrank to 40 maximum cars. The field was further reduced in 2019 and 2020 to 38 and 36, respectively. During the 2020 season, fields were temporarily increased to 40 cars to accommodate part-time teams that were otherwise unable to qualify due to such sessions being canceled in the wake of the COVID-19 pandemic.

## Races Held Outside The U.S.

* Telcel-Motorola 200 (2005-2010) Cemax 200 (2011-2019) Monex 200 (2021-Present)
* Napa Auto Parts 200 (2008-Present)

## Playoffs

In 2016, the NXS and Truck Series adopted a playoff format similar to the NASCAR Cup Series Chase for the Championship. Unlike the Cup Series, whose Chase consists of four rounds, the Xfinity Series and Truck Series both use a three-round format. After each of the first two rounds, the four Chase grid drivers with the fewest season points are eliminated from the grid and Chase contention.

* Round of 12 (races 27–29)
	+ Begins with 12 drivers who qualify for the Chase grid with 2,000 points, plus the bonus Playoffs' points acquired in regular season.
* Round of 8 (races 30–32)
	+ Begins with eight drivers, each with 3,000 points
* Championship 4 (final race)
	+ The last four drivers in contention for the season title will have their points reset to 4,000 points, with the highest finisher in the race winning the NXS title.

## Television Broadcasting

### United States

In the 1980s, races were sparsely shown, mainly by ESPN if they were covering the cup race at the same track. Starting in 1990, more races began to be shown. By the mid-1990s, all races were shown. Most standalone races were aired on TNN, which helped grow coverage of the series, while races that were companion races with Winston Cup dates mostly aired on the network airing the Cup race. TNN aired some of these races, which also aired on CBS, NBC, ESPN, ABC and TBS.

From 2001 until 2006, Fox Sports covered the entire first half of the Busch Grand National season, while NBC and TNT both aired races during the second half, with Turner Sports producing all the coverage for both networks. However, in even numbered years, coverage was changed, with the opening race at Daytona airing on NBC in 2004, on TNT in 2002 and 2006 (due to NBC's coverage of the Winter Olympics) and the track's July race airing on FX. Large portions of Fox’s coverage aired on sister network FX, with a few marquee events on the network itself.

From 2007 until 2014, ESPN was the home of the renamed Nationwide Series. Generally four races per season aired on ABC, with the remainder on ESPN, ESPN2, and ESPNews. Early in ESPN's run, ESPN Classic was used for NNS overflow, however with less carriage of that network, this practice ended. Fox Sports made a return to the series, airing the 2011 Bubba Burger 250 at Richmond on Speed Channel, as ESPN gave up its exclusive rights to the race because of programming conflicts.

In 2015, the NXS returned to Fox Sports during the first half of the season. Like the previous time Fox held rights to the series, most of the coverage aired on cable, though this time it aired on FS1. Four races aired on Fox itself until 2019, when all races moved to FS1. The second half of the NXS season is televised by NBC Sports. Four to five races air on NBC itself, while the others air on NBCSN (until 2020) or, during the Olympics, CNBC or USA Network (prior to 2020). Since 2021, USA Network had carried all races not aired on NBC or Fox Sports.

The Xfinity Series will move exclusively to The CW in 2025 as part of a seven-year deal.

### Latin American

The NXS is available in most Latin American countries on cable and satellite TV. Since 2006, (formerly called SPEED until 2013) carries live coverage of all events. The races are also shown on Fox Sports Latin America, some of them live and some tape-delayed depending on the network's schedule. Televisa Deportes also broadcast a 30-minute recap every Sunday morning on national television in Mexico. In Brazil, BandSports carries all three series.

### Australia

Network Ten's additional high-definition service, ONE, began broadcasting races from the NXS live or near live during the 2008 season. ONE continued to air highlights packages of each race until the end of 2014. Broadcasts of the series are now exclusively shown on the Fox Sports pay TV channels.

### Canada

All races are live on TSN channels using FOX's or NBC's coverage. Also, races are broadcast on RDS or RDS2 in French using the world feed produced by NASCAR.

### Europe

In 2012, Motors TV broadcasts all Xfinity races live, delayed and highlights, until 2018 when the channel ceased operations.

In Portugal, SPORT TV broadcasts every Xfinity races live.

In the United Kingdom, the Xfinity races—in full and highlights—are available on Premier Sports 2.

### Asia

All races are live on Sports Illustrated Television channels using FOX's or NBC's coverage with highlights on Fox Sports Asia.

## Cup Drivers In The Xfinity Series

Before 2008, any Cup driver was allowed to run the full Xfinity Series Season. After 2007, they however banned this to them only running a few races a year due to Adam Petty's dominant 2007 Season. This was known as "The Adam Petty Rule".

## Xfinity Series cars

In the early 1980s, teams were switching from the General Motors 1971–77 X-Body compact cars with 311-cubic inch engines. Later, teams were using General Motors 1982–87 G-body cars. Ford teams have used the Thunderbird cars consistently.

In 1989, NASCAR changed rules requiring cars to use current body styles, similar to the Cup cars. However, the cars still used V6 engines. The cars gradually became similar to Cup cars.

In 1995, changes were made. The series switched to V-8s with a compression ratio of 9:1 (as opposed to 14:1 for Cup at the time). The vehicle weight with driver was set at 3,300 pounds (as opposed to 3,400 for Cup). The body style changes, as well as the introduction of V-8s, made the two series' cars increasingly similar.

The suspensions, brake systems, transmissions, were identical between the two series, but The Car of Tomorrow eliminates some of these commonalities. The Car of Tomorrow is taller and wider than the Generation 4-based vehicles in the then-Nationwide Series, and until 2010, it utilizes a front "splitter", opposed to a front valance. The Car of Tomorrow also set pole speeds slower than the NXS cars at companion races.

Previously, Busch Series cars used fuel that contained lead. NASCAR conducted a three-race test of unleaded gasoline in this series that began on July 29, 2006, with a race at Gateway International Raceway. The fuel, Sunoco GT 260 Unleaded, became mandatory in all series starting with the second weekend of the 2007 series, with Daytona being the last race weekend using leaded gasoline.

Another distinction between the cars started in 2008: Goodyear had developed a rain tire for NASCAR road course racing in both series but NASCAR had yet to use them under race conditions by the time NASCAR abandoned the program for the Cup Series in 2005 (the Cup Series eventually used rain tires at the 2020 Bank of America Roval 400 and 2021 Texas Grand Prix), but the Busch Series continued to use rain tires in races at Autodromo Hermanos Rodriguez and Circuit Gilles Villeneuve, since the races could not be planned with rain dates. When rain started to fall at the 2008 NAPA Auto Parts 200, the tires were used in the rain for the first time.

Another distinction was added in 2012, when NASCAR changed the fuel delivery system in the Cup cars from carburetion to fuel injection. NXS cars continue to use carburetors. Furthermore, with the Cup Series' switch to Next Gen car in 2022, Xfinity cars (as well as Truck Series vehicles) continue to use traditional five-lug steel wheels and centered door numbers, as opposed to an aluminum center lock wheel and numbers being placed behind the front wheel on the Next Gen.

### Specifications for Generation 4 NXS car

* **Chassis**: Steel tube frame with integral safety roll cage – must meet NASCAR standards
* **Engine displacement**: 5,860 cc (358 cu in) Pushrod V8
* **Transmission**: 4-speed manual
* **Weight**: 3,200 lb (1,451 kg) minimum (without driver); 3,400 lb (1,542 kg) minimum (with driver)
* **Power output**: 650–700 hp (485–522 kW) unrestricted, ≈450 hp (335 kW) restricted
* **Torque**: 700 N⋅m (520 ft⋅lb)
* **Fuel**: 90 MON, 98 RON, 94 AKI unleaded gasoline provided by Sunoco 85% + Sunoco Green Ethanol E15
* **Fuel capacity**: 18 US gallons (68 litres)
* **Fuel delivery**: Carburetion
* **Compression ratio**: 12:1
* **Aspiration**: Naturally aspirated
* **Carburetor size**: 390 ft³/min (184 L/s) 4 barrel
* **Wheelbase**: 105 in (2,667 mm)
* **Steering**: Power, recirculating ball
* **Tires**: Slick (all tracks) and rain tires (road courses only if in case of rainy conditions) provided by Goodyear Eagle
* **Length**: 203.75 in (5,175 mm)
* **Width**: 75 in (1,905 mm)
* **Height**: 51 in (1,295 mm)
* **Safety equipment**: HANS device, seat belt 6-point supplied by Willans

### Xfinity "Car of Tomorrow" (CoT)

Main article: Car of Tomorrow

The then Nationwide Series unveiled its "Car of Tomorrow" (CoT) at the July 2010 race at Daytona International Speedway. Before being fully integrated in the 2011 season, it was also used in 2010 races at Michigan International Speedway, Richmond International Raceway and Charlotte Motor Speedway. The Xfinity CoT has important differences from the NASCAR Cup Series CoT, and the now-retired Generation 4 style car. The body and aerodynamic package differs from the NASCAR Cup Series cars, marketing American pony cars from the 1960s such as the Ford Mustang, Dodge Challenger, and Chevrolet Camaro. The change to share the same CoT chassis as the Cup series resulted in the wheelbase being lengthened from 105 to 110 inches

Each manufacturer uses a distinct body design (similar to 1960s muscle cars), built within strict aerodynamic guidelines provided by NASCAR. The Chevrolet car body currently resembles the Camaro SS, after initially running the Impala and then the Zeta-based Camaro (which coincided with GM's Cup car being its four-door Zeta counterpart, the Holden VF Commodore based Chevrolet SS, being used in Cup at the time). Ford uses the Mustang GT. Toyota runs the Camry, reconfigured in 2015 to resemble the current production model. Toyota announced they would be running the Supra starting in 2019, replacing the Camry, which had been run in the series since Toyota joined the Xfinity Series in 2007. Dodge teams used the Challenger R/T model, despite the manufacturer pulling all factory support after 2012 (though it continued in Canada as FCA Canada still supports the Pinty's Series). Following Dodge's exit, smaller underfunded teams continued to run second-hand Challenger chassis without factory support (thus earning the nickname "Zombie Dodges"). As a result of a rules change after the 2018 season, all Challenger chassis were rendered ineligible for competition, as the series made the switch to composite body panels. Since FCA had pulled factory support years earlier, no new body was submitted for competition, ending the possibility of running a Challenger chassis in the series.

## Manufacturer representation

### Budweiser Late Model Sportsman Series (1982–1983)

Chrysler
* Dodge Challenger: 1982

Ford
* Ford Fairmont: 1982–1983

General Motors
* Chevrolet Malibu: 1982–1983
* Oldsmobile Omega: 1982–1983
* Pontiac Ventura: 1982–1983

### Busch Grand National Series (1984–2002)

Chrysler
* Dodge Intrepid: 2002

Ford
* Ford Fairmont: 1984–1986
* Ford Thunderbird: 1987–1997
* Ford Taurus: 1998–2002
* Mercury Cougar: 1984

General Motors
* Buick Regal: 1985, 1988–1995 (no factory support after 1991)
* Buick LeSabre: 1986–1989
* Chevrolet Monte Carlo: 1986–1988, 1995–2002
* Chevrolet Nova: 1984–1988
* Chevrolet Lumina: 1989–1995
* Oldsmobile Omega: 1984–1987
* Oldsmobile Delta 88: 1986–1987
* Oldsmobile Cutlass Supreme: 1988–1995 (no factory support after 1992)
* Pontiac Ventura: 1984–1987
* Pontiac Grand Prix: 1988–2002

### Busch Series (2003–2007)

Chrysler
* Dodge Intrepid: 2003-2004
* Dodge Charger: 2005–2007

Ford
* Ford Taurus: 2003–2005
* Ford Fusion: 2006–2007

General Motors
* Pontiac Grand Prix: 2003–2005 (no factory support after 2003)
* Chevrolet Monte Carlo: 2003–2005
* Chevrolet Monte Carlo SS: 2006–2007

Toyota
* Toyota Camry: 2007

### Nationwide Series (2008–2014)

Chrysler
* Dodge Charger: 2008–2010
* Dodge Challenger R/T: 2010–2014 (no factory support after 2012)

Ford
* Ford Fusion: 2008–2010
* Ford Mustang GT: 2010–2014

General Motors
* Chevrolet Monte Carlo SS: 2006–2007
* Chevrolet Impala SS: 2008–2009
* Chevrolet Impala: 2010–2013 (no factory support in 2013)
* Chevrolet Camaro SS: 2013–2014

Toyota
* Toyota Camry: 2008–2014

### Xfinity Series (2015–present)

FCA US (Chrysler)
* Dodge Challenger R/T: 2015–2018 (no factory support)

Ford
* Ford Mustang GT: 2015–present

General Motors
* Chevrolet Camaro SS: 2015–present

Toyota
* Toyota Camry: 2015–2020 (no factory support after 2018)
* Toyota Supra: 2019–present

## Seasons

Champion
 2020