Denny Hamlin will start Sunday's Daytona 500 at the rear of the 40-competitor field after his No. 11 Toyota failed two pre-race inspections.
Hamlin, the defending champion, was scheduled to start in 21st position. He also won the 2016 race.
NASCAR also ejected Hamlin's car chief, Eric Phillips, from the race and penalized Hamlin 15 minutes of practice time for the Cup Series race at Las Vegas Motor Speedway.
FOX Sports' Bob Pockrass reported Hamlin's car failed inspection for a rear toe issue.
Driver Brennan Poole's No. 15 Chevrolet also failed two inspections, with his car chief, Mark Fordham ejected. Poole also lost Las Vegas practice time. Poole already was set to start at the rear because of an engine change.
The Daytona 500 begins Sunday at 2:30 p.m. ET.
--Field Level Media