SAN DIEGO, CALIFORNIA - JUNE 20: Brent Crews, driver of the #19 Mobil 1 Toyota, and Parker Retzlaff, driver of the #99 SA Recycling Chevrolet, race  during the NASCAR O'Reilly Auto Parts Series United Rentals Driven to Serve 250 at Naval Base Coronado on June 20, 2026 in San Diego, California. (Photo by David Jensen/Getty Images) | Getty Images
SAN DIEGO, CALIFORNIA - JUNE 20: Brent Crews, driver of the #19 Mobil 1 Toyota, and Parker Retzlaff, driver of the #99 SA Recycling Chevrolet, race during the NASCAR O'Reilly Auto Parts Series United Rentals Driven to Serve 250 at Naval Base Coronado on June 20, 2026 in San Diego, California. (Photo by David Jensen/Getty Images) | Getty Images

O’Reilly Auto Parts Series TV Ratings: Naval Base Coronado

The CW earned 1,161,000 total viewers for the inaugural O’Reilly Auto Parts Series race at Naval Base Coronado in San Diego, per Nielsen Panel-Only Data.Viewership peaked at 1,372,000 total viewers between 6:15-6:30 p.m. ET.

It was a 4% increase from the same weekend in 2025, a race held at Pocono Raceway. It was the 18th straight event with viewership eclipsing one million total viewers.