Both series are weighing international expansion as Formula 1 continues to add global rounds.

Talk of a Kigali round in the 2030s has intensified, with drivers welcoming a return to the continent.

The extension keeps the series' most successful team paired with Chevrolet beyond its current agreement.

The governing body will introduce wet-weather engine software updates before the United States Grand Prix.

The Mercedes driver could clinch the title within the next two months based on remaining points permutations.

NASCAR returns to the Charlotte oval for the fall for the first time since 2017 and faces a wet forecast.

Arrow McLaren is among the teams locking in multi-season engine supply commitments.

Antonelli runs the Sepang update while Russell reverts to an earlier spec and serves an engine penalty.

Isack Hadjar argues the physical challenge should remain, while others back driver cooling measures amid Singapore heat.

Extreme conditions at Marina Bay prompt official heat protocol for the sport's first sprint weekend there.

The dispute between the teams continues to escalate through legal channels.

The seven-time champion says caution from drivers and officials has diluted the sport's seat-of-the-pants racing.

Series officials detailed the inspection process after the damaged car failed to go through standard checks.

Drivers want a road course restored to the playoff schedule now that the Roval is gone.

Competitors adapt to the shorter 400-mile Charlotte Chase race and revised playoff structure.

Commentators point to scheduling conflicts as a factor in flagging television audience interest.

The sponsor extends its deal with the driver and Michael Jordan's team.

Larson leads the playoff field as rivals including Denny Hamlin and Christopher Bell chase him down.