McLaren Racing is gearing up to make its long-anticipated entry into international prototype racing, marking a new chapter for the legendary British marque. After years of teasing, CEO Zak Brown’s promise of “not if, but when” appears to be coming to fruition, with multiple sources confirming McLaren has signed Dallara to construct cars under the LMDh formula. This move will align McLaren with other heavyweights like Acura, BMW, Cadillac, and Porsche in both IMSA’s GTP class and the World Endurance Championship’s Hypercar category.
A Return to Prototype Glory
This isn’t McLaren’s first foray into prototype racing. The brand’s iconic McLaren F1 GTRs, powered by BMW, dominated the scene in the 1990s. Now, McLaren looks to reignite that legacy with a fresh LMDh project, signaling its commitment to the top tier of endurance racing.
The new car will utilize Dallara’s expertise for the chassis, while McLaren seeks a partnership with a manufacturer for engine development—just as BMW provided the heart for its earlier GTR success. McLaren’s focus on collaborating with an established engine supplier ensures the program benefits from proven performance and reliability.
A Staggered Entry Timeline
While the project remains in its early stages, McLaren is charting a gradual entry. Testing is expected to begin in 2026, followed by a World Endurance Championship (WEC) debut in 2027. McLaren will then expand into IMSA’s GTP ranks by 2028 or 2029, following a strategy similar to Hyundai’s Genesis GMR-001 LMDh program.
This staggered approach allows McLaren to refine its car’s performance and establish its presence in the fiercely competitive prototype scene before taking on dual championships.
The Growing Prototype Field
McLaren’s arrival in LMDh is set against the backdrop of a booming prototype racing landscape. With Aston Martin’s Valkyrie AMR-LMH debuting at the Twelve Hours of Sebring in March and Hyundai’s confirmed program, IMSA and WEC are poised to host a record number of manufacturers in their premier classes.
Currently, five manufacturers compete in IMSA’s GTP class, with Aston Martin increasing the count to six. Hyundai’s entry will make seven, and McLaren’s arrival could push participation to unprecedented levels. Ford is also developing its own GTP/Hypercar program, further adding to the crowded field.
Potential Class Structure Changes
The surge in manufacturer participation raises questions about how IMSA and WEC will manage the influx of competitors. Both series may need to revisit their four-tier class structures to ensure fair competition and maintain the integrity of their top categories.
The addition of McLaren and other manufacturers underscores the growing appeal of LMDh and Hypercar racing, which combines cutting-edge technology with cost controls to attract global brands.
A New Era for McLaren
For McLaren, the LMDh program represents more than just a return to endurance racing—it’s a statement of intent. As the brand seeks to expand its influence beyond Formula 1 and GT racing, prototype competition offers a platform to showcase its engineering excellence on the global stage.
“It’s not just about entering another series,” said a source close to the project. “This is about McLaren reasserting itself as a leader in motorsport innovation and performance.”
What’s Next?
While McLaren has yet to officially comment on the project, the signs point to a calculated and ambitious move into LMDh. With testing just a few years away, fans can look forward to seeing the iconic papaya-colored machines back on endurance racing grids, taking on rivals in some of motorsport’s most prestigious events, including Le Mans and Daytona.
