Cadillac Racing left Michelin Raceway Road Atlanta on Sunday with three championship trophies and zero confetti from the race itself. The brand clinched the 2026 IMSA GTP Manufacturer, Team, and Driver titles at the 29th Annual Motul Petit Le Mans, yet none of its three entries crossed the finish line first.
That disconnect tells you everything about how Cadillac built this season.
The points lead heading into the finale was so commanding that GM only needed a single V-Series.R to take the green flag for the Manufacturer crown to be mathematically sealed. All three cars started. Title secured before the first pit stop.
Jack Aitken claimed the GTP Driver championship, while his No. 31 Whelen Cadillac from Action Express Racing, shared with Earl Bamber and Frederik Vesti, locked up the Team title. It was a season built on relentless consistency rather than outright domination.
Dr. Eric Warren, GM’s Vice President of Global Motorsports Competition, pointed to ten consecutive podium finishes stretching back to Indianapolis as proof. “These cars are tough to race, the competition, different manufacturers we’re racing against,” Warren said.
The actual race at Road Atlanta offered a dose of humility. The No. 40 Cadillac Wayne Taylor Racing entry, driven by Jordan Taylor, Louis Deletraz, and Colton Herta, managed third. The No. 10 sister car with Ricky Taylor, Filipe Albuquerque, and Will Stevens came home fourth. Aitken’s championship-winning No. 31 limped to seventh after a late incident.
This is Cadillac’s fifth IMSA Manufacturer title since 2017, a run of success that quietly rivals anything in modern American sportscar racing. GM President Mark Reuss called it “an extraordinary accomplishment,” though the corporate praise barely scratches the surface of what this program has become. Cadillac now campaigns credibly on two fronts, with Reuss pointing toward momentum for both IMSA and WEC in 2027.
The “Team Cadillac” model Warren described, two separate racing organizations operating under a unified manufacturer banner, has become the template for GTP success. Wayne Taylor Racing and Action Express Racing are fierce competitors sharing telemetry, strategy insights, and a common engine bay. It is cooperation that does not eliminate rivalry, and the results speak for themselves.
What makes this sweep notable is the competitive landscape Cadillac navigated. The GTP class features factory efforts from Porsche, BMW, Acura, Lamborghini, and Alpine. Balance of Performance regulations are designed to keep every manufacturer within striking distance at every track.
Stringing together ten straight podiums in that environment is not a product of raw horsepower advantage. It is preparation, pit execution, and driver discipline compounding over a full calendar.
Aitken’s Driver title deserves its own scrutiny. The British racer has operated in the shadows of bigger names in global motorsport, but a full IMSA GTP championship cements him as one of the most effective endurance racing drivers in the field. Sharing duties with Bamber, a two-time Le Mans winner, and Vesti, who continues to build his prototype resume, gave Action Express a lineup with no weak link across stints.
The next chapter begins January 30 at Daytona International Speedway for the 65th Rolex 24. Cadillac will arrive as the team everyone is chasing, carrying three titles and the burden that comes with defending all of them simultaneously.
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