NASCAR Xfinity Series
| Category | Stock cars |
|---|---|
| Country | United States |
| Inaugural season | 1982 |
| Manufacturers | Chevrolet · Ford · Toyota |
| Engine suppliers | Chevrolet · Ford · Toyota |
| Tire suppliers | Goodyear |
| Drivers' champion | Justin Allgaier |
| Makes' champion | Chevrolet |
| Teams' champion | JR Motorsports |
| Official website | NASCAR Xfinity Series |
| Current season | |
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.[1][2] Starting in 2026, the series will be sponsored by O'Reilly Auto Parts and will be called the NASCAR O'Reilly Auto Parts Series.[3]
- ^ Ryan, Nate (September 18, 2013). "Nationwide to end sponsorship of NASCAR's No. 2 series". USA Today. Retrieved September 18, 2013.
- ^ "NASCAR names XFINITY as new series sponsor". September 3, 2014. Retrieved September 3, 2014.
- ^ Albino, Dustin (August 17, 2025). "O'Reilly Auto Parts in position to replace Xfinity as entitlement sponsor of NASCAR's secondary series". Jayski's NASCAR Silly Season Site. Retrieved August 18, 2025.