GM Motorsports spent this past weekend collecting titles on opposite sides of the Atlantic. By Sunday night, Chevrolet and Cadillac had secured four championships across two series and two continents, the kind of compressed calendar coincidence that makes for a good press release and, in this case, a legitimately unusual result.
It started Saturday at Homestead-Miami Speedway, where Chevrolet locked up its 10th consecutive NASCAR Xfinity Series manufacturer championship. Justin Allgaier, running the No. 7 JR Motorsports Chevrolet, finished 7th in the race and took the driver title, his second. The manufacturer result was never really in doubt: Team Chevy drivers won 29 of 33 Xfinity races this season, a series record. Thirteen different drivers contributed scoring laps toward that total. In the 21st century alone, Chevrolet has won 20 Xfinity manufacturer championships.
Then came Sunday morning at Monza. TF Sport’s No. 33 Corvette Z06 GT3.R, the same car the UK-based team has campaigned since adopting the platform in 2024, won the FIA World Endurance Championship Trophy for LMGT3 Endurance Teams. Jonny Edgar took the LMGT3 driver title alongside it. The championship was earned across a full season that included five top-ten finishes and a victory at the 24 Hours of Le Mans, the 10th overall Le Mans win for Corvette. It is the second WEC title for a Corvette entry and the first for TF Sport.
The same Monza race saw the No. 38 Cadillac Hertz Team JOTA V-Series.R take outright victory, with Sébastien Bourdais, Earl Bamber, and Jack Aitken sharing the drive. That result carries a note of finality: Bourdais will exit Cadillac after the 2026 season, as the team confirmed its 2027 WEC roster earlier this month.
Back in Miami, Kyle Larson wrapped up his third NASCAR Cup Series championship, finishing 12th in the race while piloting the No. 5 Hendrick Motorsports Chevrolet. It is Chevrolet’s 35th Cup manufacturer title. The Cup season opened with teams adapting to an updated Camaro ZL1, a learning curve that showed early. By the playoffs, that disadvantage had erased itself.
The 2026 WEC haul for GM extends further. TF Sport also won the European Le Mans Series LMGT3 team and driver championships this year. Corvette Racing secured the IMSA GTD Pro manufacturers championship. The sister No. 34 Racing Team Turkey by TF Corvette added a Sao Paulo victory and placed 4th in the WEC LMGT3 standings. At October’s Petit Le Mans, Cadillac’s GTP program swept the manufacturer, team, and driver championships in IMSA, with Jack Aitken taking that driver title as well.
The sheer volume of championships in a single calendar year reflects something beyond fortunate scheduling. Five top-ten WEC finishes including Le Mans does not happen by accident. Winning 29 of 33 races in a support series is a margin that suggests organizational depth rather than individual brilliance. Eric Warren, GM’s vice president of Global Motorsports Competition, credited the cross-program knowledge transfer: experience gained in endurance racing informs NASCAR development and vice versa.
Allgaier’s Xfinity title is his second, the first having come earlier in his JR Motorsports tenure. Larson’s Cup title is his third, placing him among the small group of drivers to win three or more. The Corvette’s Le Mans record now stands at 10 overall victories.
GM’s 2026 motorsports calendar still has loose ends. The company is in the middle of a substantial strategic expansion on the production side, and Warren’s comments about motorsports informing production vehicle programs are consistent with that direction. For now, the championships are what they are: four titles in one weekend, across Homestead and Monza, by four different program structures under the same corporate umbrella.
Cadillac’s WEC effort ends 2026 on a race win at Monza. Chevrolet ends it having won 10 consecutive Xfinity manufacturer titles and a Cup championship in the same afternoon. That is a difficult combination to replicate, even if you are GM.
Source: General Motors. Images courtesy of General Motors.
