Discover the 2026 NASCAR rule changes for Cup, Xfinity, and Truck Series, covering competition, eligibility, and more.

NASCAR has made quite a few modifications in its rulebook after making changes in the overall format of the sport.

The NASCAR Rulebook is out along with a few modifications for the NASCAR Cup Series, NASCAR O'Reilly Auto Parts Series and ...

NASCAR has updated several sections of its rule book ahead of the 2026 season.Included in the updates were wording on ...

On Friday, NASCAR issued an update to the NASCAR Cup Series, NASCAR O'Reilly Auto Parts Series, and NASCAR Craftsman Truck ...

NASCAR Cup engines live in a strange space: they are tightly regulated, largely hand built, and expected to survive hours at full throttle while still making headline power. The rulebook caps ...

A massive NASCAR Rule Book update was posted on Friday and removes every instance of ‘the playoffs’ and ‘playoff points’ to reflect the return of the Chase for the Championship format this season.

NASCAR officials and teams are having serious talks about the future of the Next Gen car as the series heads toward 2026. The car, now entering its fifth season, was built to cut costs and keep the ...

On the latest "Hauler Talk" podcast, NASCAR announces multiple rule alterations ahead of the 2026 season across its three ...

NASCAR officials issued technical updates for the 2026 rule book on Friday, including specifics for the Cup Series’ rules configuration for 750-horsepower tracks and a mandate for A-post flaps at ...