Having attended both F1 and IMSA races, I found some distinct differences, and you might be surprised at what I discovered.

Courtesy of IMSA The International Motor Sports Association ... the class in which Acura, BMW, Cadillac, Lamborghini and Porsche currently compete. Aston Martin will join midway through this ...

Honda has made a big change to its IMSA program for 2025 which affects everything it does on and off the track, and could ...

See, in both IMSA and WEC, Cadillac is the only manufacturer that opted to mate a V8 combustion engine to its hybrid powertrain. Everyone else opted for smaller engines — but it was critical ...

Then, Cadillac has to prove it can beat them. The Cadillac V-Series.R, the LMDh machine competing in both IMSA and WEC, is the first step in that direction. With wins at races like Long Beach ...

Wayne Taylor Racing will be grappling with a new engine manufacturer for the IMSA WeatherTech SportsCar Championship ... nearly five years ago the last time he was behind the wheel of a Cadillac. “We ...

The first 60 minutes and last two hours will air on NBC. USA, IMSA.TV and YouTube will share the middle portions. After that, IMSA, NASCAR’s sports-car cousin, will hibernate for six weeks.

During the announcement, GM president Mark Reuss praised O’Blenes’ track record, which includes overseeing the development of championship-winning IMSA Cadillac and Corvette engines.