SONOMA, CALIFORNIA - JULY 12: William Byron, driver of the #24 Valvoline Chevrolet, drives during qualifying for the NASCAR Cup Series Toyota/Save Mart 350 at Sonoma Raceway on July 12, 2025 in Sonoma, California. (Photo by Chris Graythen/Getty Images) | Getty Images
SONOMA, CALIFORNIA - JULY 12: William Byron, driver of the #24 Valvoline Chevrolet, drives during qualifying for the NASCAR Cup Series Toyota/Save Mart 350 at Sonoma Raceway on July 12, 2025 in Sonoma, California. (Photo by Chris Graythen/Getty Images) | Getty Images

Daytona pre-race inspection; Byron’s crew chief ejected, start at the rear, stop and go penalty

NASCAR Cup Series pre-race inspection is complete at Daytona International Speedway. Two cars failed inspection twice.

Car #24  

On their second attempt through inspections after passing all stations they were observed making an unapproved adjustment to the splitter. The struts were reinstalled, and the car was rerun over the USS and failed due to the adjustment.

  • The 24 Crew Chief Rudy Fugle was ejected from the event.
  • Loss of pit selection
  • Start at the rear of the field
  • The vehicle must perform a stop and go penalty after receiving the green flag

Car #78

Failed inspections twice.

  • The car chief Lee Leslie was ejected from the event
  • Loss of pit selection

— NASCAR —