2023 GT World Challenge America

The 2023 Fanatec GT World Challenge America Powered by AWS was the seventeenth season of the United States Auto Club's GT World Challenge America, and the sixth under ownership of SRO Motorsports Group.

The season began at Sonoma on March 30, and ended at Indianapolis on October 8.

Eric Filgueiras and Stevan McAleer won the Pro class championship for Rennsport One (RS1) in the new Porsche 911 GT3 R, one year after they won the 2022 GT4 America Series Silver class title. George Kurtz and Colin Braun won the Pro-Am championship for CrowdStrike by Riley.

Calendar
The preliminary calendar was released on July 29, 2022, featuring 14 races across seven rounds. In September, an updated schedule was released, postponing the event at Circuit of the Americas by two weeks and bringing the Road America round forward one week. An additional change was announced on October 17, moving the NOLA round from February 24–26 to April 28–30 to alleviate a clash with the Kyalami 9 Hours, as well as allowing the 2023 BoP test to be completed before the start of the season.

Mid-season changes

 * Aston Martin factory GT drivers Ross Gunn and Valentin Hasse-Clot split driving duties alongside Derek DeBoer at TRG-AMR. Gunn raced at the season-opener at Sonoma, then was replaced by Hasse-Clot for the next four meetings. Gunn returned at Sebring, and Hasse-Clot finished the season at Indianapolis with Ben Tuck also making his series debut.
 * Neil Verhagen replaced John Edwards at ST Racing beginning at the fourth round in VIR.
 * Adam Christodolou replaced Andy Pilgrim at RealTime Racing beginning at the fourth round in VIR. The number 43 car was moved up from Am to Pro-Am.
 * Ziad Ghandour withdrew from the fourth round at VIR due to a personal commitment. The number 9 TR3 Racing car was moved up to the Pro class as Kenton Koch replaced Ghandour for the weekend. Ghandour missed the final two races of the season due to a family matter.
 * Turner Motorsport, who ran full-time in 2022, returned for a one-off entry at VIR with Vincent Barletta and Robby Foley driving the number 096 BMW M4 GT3.
 * Charlie Luck missed the final three rounds due to a kidney injury sustained in July. Wright Motorsports moved the number 45 car from the Pro-Am to the Pro category as Madison Snow replaced Luck for the remainder of the season.
 * TR3 Racing added a second Mercedes-AMG GT3 for Paul Kiebler and Jon Branam which debuted in the Am class at Road America. At the Indianapolis 8 Hour, TR3 entered one car for Kiebler, Branam, and British driver Matthew Bell. On the morning of the race, Kiebler was replaced by Kenton Koch.
 * Adam Adelson and Elliot Skeer drove the newest-generation Porsche 911 GT3 R (992) in the second race at Road America after crashing their 991.2-generation car in a crash during the first race. The 991.2 returned for the following round at Sebring, but the 992 raced at Indianapolis.
 * Rearden Racing, who last competed in GT World Challenge America during the 2021 season, returned at the Indianapolis 8 Hour with a new Porsche 911 GT3 R.

Race results
Bold indicates overall winner

Championship standings
Championship points are awarded for the first ten positions in each race. Entries are required to complete 75% of the winning car's race distance in order to be classified and earn points. Individual drivers are required to participate for a minimum of 40 minutes in order to earn championship points in any race. Race-by-race entries which only participated in either of the final two races of the season are not eligible for points.
 * Scoring system


 * Standard Points


 * Indianapolis Points

Drivers' championship

 * Notes
 * † – Drivers did not finish the race but were classified, as they completed more than 75% of the race distance.