Cadillac GTP Hypercar for 2023 IMSA, WEC, 24 Hours of Le Mans

  • Cadillac plans to field the prototype in both the IMSA WeatherTech SportsCar Championship and the World Endurance Championship.
  • The car is a joint effort between Cadillac Design, Cadillac Racing and Dallara.
  • The car is set to make its racing debut in the new IMSA GTP prototype class at the Rolex 24 at Daytona in January.

    Cadillac unveiled its project GTP Hypercar on Thursday morning and officials say the marque is ready to take on all competitors on the world stage and challenge for overall victory at the 2023 24 Hours of Le Mans.

    Cadillac plans to race the car in both the IMSA WeatherTech SportsCar Championship and the World Endurance Championship. The car is slated to make its race debut in the new IMSA GTP prototype class at the Rolex 24 at Daytona in January against expected BMW, Acura and Porsche entrants. The class replaces the current DPi class.

    Alpine and Lamborghini plan to add cars to the new prototype classes in 2024. A previously announced Audi program is reportedly on hold as the company reassess current economics and a potential move to Formula One.


    “It has always been our dream to drive for overall victory again at Le Mans,” said Mark Stielow, General Motors Director of Motorsport and Engineering. “(GM President) Mark Reuss challenged our team to put this project together and I think all of our partners really pulled together. I think it will be interesting when we get them all out in Daytona in 2023.”

    The car is a joint effort between Cadillac Design, Cadillac Racing and Dallara. The new racer will be powered by an all-new 5.5-litre DOHC V8 which will be coupled with the shared LMDh hybrid system, which will allow the same cars to race in both the top classes of IMSA and WEC.

    “What’s really great about this program is the specification system that we all work with,” said Laura Wontrop Klauser, GM’s sports car racing program manager. “The hybrid system will be developed together and together. We have regular meetings with the sanctioning body, sometimes without the sanctioning body. The OEMs have already worked together quite a bit.

    imsa wec cadillac gtp hypercar


    “In relation to the rest, our goal, the aero window that we need to achieve, as well as the performance target are so well defined that you really try to be as creative as possible. I think Cadillac created the most beautiful car in the windows. But despite this, we are all still sitting in the same windows.”

    As with all major sports car series today, the class will be subject to performance formulas to keep the competition close.

    “It’s okay if we all show up and are a little bit different,” said Klauser. “We’re just going to have our own identities, which I think is what makes this class so exciting.”

    The car is scheduled to hit the track for testing this summer. Internal testing, including work on the test bench, has already started. Drivers from Chip Ganassi Racing and Action Express – teams currently racing with Cadillac in the IMSA DPi class – are involved in the testing.

    Klauser said the manufacturer’s drivers and line-ups for 2023 for IMSA, WEC and Le Mans will be announced at a later date. Plans for Le Mans are in flux until Cadillac officials find out how many invitations it will receive from race promoter Automobile Club de l’Ouest. Klauser hopes Cadillac will receive invitations for at least two cars.

    imsa wec cadillac gtp hypercar


    “The way the invitation process works, there are no guarantees until we’re invited,” Klauser said. “Our hope is to have at least two vehicles there. It’s a discussion that starts annually with the ACO. A lot of this has to do with what your plans are for competing in the WEC.

    “We’re going to have a full WEC season start with Cadillac next year, which is super exciting.

    The creative department of the design process was led by Chris Mikalauskas, senior exterior creative designer at Cadillac.

    “Our job is to push as hard as we can,” said Mikalauskas. “Normally, when designing production vehicles, we sometimes have to make some sacrifices. There are no victims in racing. Functionality has to win, but from our side it’s like ‘How nicely can we see this feature doing?’ That’s the key takeaway.

    “And for Cadillac, apart from being a race car, this is our chance to show people, yes, we’re going to make high-performance cars in the future, and that’s what they might look like.”

    imsa wec cadillac gtp hypercar


    Mikalauskas says it was a dream to work on this specific Cadillac program.

    “From an aesthetic point of view, this new series allows the cars not to be just cookie cutters,” said Mikalauskas. “And that’s really exciting for fans and true motorsport enthusiasts because they can see this unique car out there and see that Cadillac did that.

    “And that we’re going to fight for first place, that’s really cool.”

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