The NASCAR Xfinity Series (NXS) is NASCAR's second-tier stock car racing series, serving as a feeder for the premier Cup Series. Races are typically held the day before a Cup Series event, providing a weekend of racing action for fans. The Xfinity Series features up-and-coming drivers and established veterans, offering a platform for developing talent and showcasing competitive racing.
In 1948, the Modified and Roadster series were formed, becoming NASCAR's first series.
In 1950, NASCAR's Sportsman division was formed as NASCAR's short track race division.
In 1968, the series became the Late Model Sportsman Series.
In the early 1980s, teams were switching from the General Motors 1971–77 X-Body compact cars with 311-cubic inch engines.
By the inception of the touring format in 1982, the series used older compact cars.
In 1982, Anheuser-Busch sponsored a newly reformed late-model sportsman series with its Budweiser brand, leading to the formation of the modern-day Xfinity Series.
In 1982, J. Ingram.
In 1982, the series was called the Budweiser Late Model Sportsman Series.
Later, teams were using General Motors 1982–87 G-body cars.
In 1983, S. Ard.
In 1983, the series was called the Budweiser Late Model Sportsman Series.
From 1984, the series was called the NASCAR Busch Grand National Series.
In 1984, S. Ard.
In 1985, J. Ingram.
In 1986, L. Pearson.
In 1987, L. Pearson.
In 1988, T. Ellis.
In 1989, NASCAR changed rules requiring cars to use current body styles, similar to the Cup cars.
In 1989, R. Moroso.
In 1990, C. Bown.
Starting in 1990, more Xfinity races began to be shown, leading to full coverage by the mid-1990s.
In 1991, B. Labonte.
In 1992, J. Nemechek.
In 1993, S. Grissom.
In 1994, D. Green.
In 1995, J. Benson Jr.
In 1995, the series switched to V-8s with a compression ratio of 9:1 and the vehicle weight with driver was set at 3,300 pounds.
In 1996, R. LaJoie.
In 1997, R. LaJoie.
In 1998, D. Earnhardt Jr.
In 1999, D. Earnhardt Jr.
In 2000, J. Green.
From 2001, Fox Sports covered the entire first half of the Busch Grand National season.
In 2001, K. Harvick.
In 2002, G. Biffle.
In 2002, the series was called the NASCAR Busch Grand National Series.
In 2003, B. Vickers.
In 2003, the "Grand National" name was dropped from the series' title as part of NASCAR's brand identity changes.
In 2004, M. Truex Jr.
In 2004, the opening race at Daytona aired on NBC due to NBC's coverage of the Winter Olympics.
On March 6, 2005, the series held its first race outside the United States, the Telcel-Motorola 200, in Mexico City, Mexico, won by Martin Truex Jr.
In 2005, M. Truex Jr.
On July 29, 2006, NASCAR conducted a three-race test of unleaded gasoline in the Busch Series, beginning with a race at Gateway International Raceway.
In 2006, 8 out of 10 top drivers were Cup regulars.
In 2006, K. Harvick.
On August 4, 2007, the series held its second race outside the United States, at Circuit Gilles Villeneuve in Montreal, Quebec, won by Kevin Harvick.
After the 2007 season, Anheuser-Busch ended its sponsorship of the series.
In 2007, C. Edwards.
In 2007, the NASCAR Cup Series began racing with the Car of Tomorrow, which led to the development of a new Nationwide Series car closer to the Cup car.
Starting with the second weekend of the 2007 series, unleaded gasoline became mandatory in all series, with Daytona being the last race weekend using leaded gasoline.
In July 2008, NASCAR announced that the Nationwide Series would not return to Mexico City in 2009.
In 2008, C. Bowyer.
In 2008, Nationwide Insurance took over the sponsorship of the series, renaming it the Nationwide Series with a reported $10 million commitment.
In 2008, during the NAPA Auto Parts 200, rain tires were used for the first time after rain started to fall.
Network Ten's ONE began broadcasting races from the NXS live or near live during the 2008 season.
In 2009, Ky. Busch.
In July 2008, NASCAR announced that the Nationwide Series would not return to Mexico City in 2009.
In July 2010, the Nationwide Series unveiled its "Car of Tomorrow" (CoT) at the race at Daytona International Speedway.
In 2010, B. Keselowski.
The new Nationwide Series car, with a setup closer to the current Cup car, debuted in the 2010 Subway Jalapeño 250 at Daytona International Speedway.
Beginning with the 2011 season, NASCAR implemented a rule stating that drivers could only compete for the drivers' championship in one of three national series of their choosing.
In 2011, Fox Sports made a return to the series, airing the Bubba Burger 250 at Richmond on Speed Channel due to programming conflicts with ESPN.
In 2011, R. Stenhouse Jr.
In 2011, the "Car of Tomorrow" was fully integrated into the season, after being used in some races in 2010.
After 2012, Dodge pulled all factory support for the Challenger R/T model.
In 2012, Motors TV began broadcasting all Xfinity races live, delayed, and highlights.
In 2012, NASCAR announced that the Nationwide Series would not be returning to Montreal in 2013.
In 2012, NASCAR made a change to the Cup cars, switching the fuel delivery system from carburetion to fuel injection. However, NXS cars continued to use carburetors.
In 2012, R. Stenhouse Jr.
In 2012, NASCAR announced that the Nationwide Series would not be returning to Montreal in 2013.
In 2013, A. Dillon.
Prior to 2013, the grid size was 43 cars per race; in 2013, it shrank to 40 maximum cars.
Since 2006, Fox Sports 3 (formerly called SPEED until 2013) carries live coverage of all events in most Latin American countries.
In 2014, C. Elliott.
ONE continued to air highlights packages of each race until the end of 2014.
In 2015, C. Buescher.
In 2015, Toyota reconfigured the Camry to resemble the current production model.
In 2015, the NXS returned to Fox Sports during the first half of the season, with most coverage airing on FS1.
On October 26, 2016, NASCAR announced plans to limit Cup participation in the lower series starting in 2017.
In 2016, D. Suárez.
In 2016, NASCAR implemented a seven-race Chase system similar to the one used in the NASCAR Cup Series.
In 2016, the NXS and Truck Series adopted a playoff format similar to the NASCAR Cup Series Chase for the Championship, using a three-round format.
In 2017, W. Byron.
Starting in 2017, Cup drivers with at least five years of experience in the series and competing for points in the Cup Series would be limited in their participation in NXS races.
As a result of a rules change after the 2018 season, all Challenger chassis were rendered ineligible for competition.
In 2018, NASCAR purchased the organization running the Busch East and Winston West series (which used the "Grand National" name) and rebranded them under the ARCA Menards Series banner.
In 2018, T. Reddick.
Motors TV broadcasts all Xfinity races live, delayed and highlights, until 2018 when the channel ceased operations.
In 2019, T. Reddick.
Until 2019, all races moved to FS1.
In 2020, A. Cindric.
In 2020, the Cup Series eventually used rain tires at the Bank of America Roval 400
In 2020, the Xfinity race field was reduced to 36 cars, but temporarily increased to 40 cars again to accommodate part-time teams due to the COVID-19 pandemic.
In 2021, D. Hemric.
In 2021, the Cup Series eventually used rain tires at the Texas Grand Prix
Since 2021, USA Network has carried all races not aired on NBC or Fox Sports.
In 2022, T. Gibbs.
In 2022, the Cup Series switched to the Next Gen car. Xfinity cars (as well as Truck Series vehicles) continued to use traditional five-lug steel wheels and centered door numbers. The Next Gen has an aluminum center lock wheel and numbers are placed behind the front wheel.
On July 28, 2023, it was announced the Xfinity Series will move exclusively to The CW in 2025 as part of a seven-year deal.
In 2023, C. Custer.
On April 11, 2024, it was announced that the move to The CW would begin a year early to broadcast the final eight races of the 2024 season.
In 2024, J. Allgaier.
On July 12, 2025, all figures are correct as of the Pit Boss/FoodMaxx 250 at the Sonoma Raceway.
In 2025 the Xfinity Series returned to Mexico City where Mexican native Daniel Suarez won.
In 2025, the Xfinity Series will move exclusively to The CW as part of a seven-year deal.
It was announced that Xfinity will cease its sponsorship of the second-tier series after 2025, although it will remain a Cup Series Premier Partner.
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