The 2023 Production Alliance Group 300 was the 2nd stock car race of the 2023 NASCAR Xfinity Series, and the 24th iteration of the event. The race took place at Auto Club Speedway in Fontana, California, a 2.0-mile (3.2 km) permanent tri-oval shaped superspeedway. The race was originally scheduled to be held on Saturday, February 25, 2023, but due to constant rain showers, the race was postponed until Sunday, February 26, immediately following the Pala Casino 400 Cup Series race on the same day.

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2023 Production Alliance Group 300

Race details
Race 2 of 33 of the 2023 NASCAR Xfinity Series
Date	February 26, 2023
Official name	24th Annual Production Alliance Group 300
Location	Auto Club Speedway, Fontana, California
Course	Permanent racing facility 2.0 mi (3.1 km)
Distance	150 laps, 300 mi (480 km)
Scheduled Distance	150 laps, 300 mi (480 km)
Average speed	115.471 mph (185.833 km/h)
Pole position
Driver	Austin Hill	Richard Childress Racing
Grid positions set by competition-based formula
Most laps led
Driver	John Hunter Nemechek	Joe Gibbs Racing
Laps	49
Winner
No. 20	John Hunter Nemechek	Joe Gibbs Racing
Television in the United States
Network	FS2
Announcers	Adam Alexander, Ryan Blaney, and Joey Logano
Radio in the United States
Radio	MRN

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The race took the scheduled 150 laps to complete. John Hunter Nemechek, driving for Joe Gibbs Racing, dominated the final stages of the race, and earned his third career NASCAR Xfinity Series win, along with his first of the season.^[1] To fill out the podium, Sam Mayer, driving for JR Motorsports, and Justin Allgaier, also driving for JR Motorsports, would finish 2nd and 3rd, respectively.

This was also the final Xfinity Series race to be held on the 2.0 mile version of Auto Club Speedway, as the track will be renovated into a 0.5 mile short track in 2023.

Auto Club Speedway (formerly California Speedway) is a two-mile (3.2 km), low-banked, D-shaped oval superspeedway in Fontana, California which has hosted NASCAR racing annually since 1997. It is also used for open wheel racing events. The racetrack is located near the former locations of Ontario Motor Speedway and Riverside International Raceway. The track is owned and operated by International Speedway Corporation and is the only track owned by ISC to have naming rights sold. The speedway is served by the nearby Interstate 10 and Interstate 15 freeways as well as a Metrolink station located behind the backstretch.

Practice and qualifying were scheduled to be held on Saturday, February 25, at 9:05 AM PST, and 9:35 AM PST, but were both cancelled due to constant rain showers.^[2] The starting lineup would be determined by a performance-based metric system. As a result, Austin Hill, driving for Richard Childress Racing, would earn the pole.^[3] Garrett Smithley and Ryan Vargas would fail to qualify.

Stage 1 Laps: 35

Stage 2 Laps: 35

Stage 3 Laps: 80