The fastest cars in IMSA. Hybrid-electric prototypes that also race at Le Mans. 11 cars from 5 manufacturers. The 2026 GTP field is the strongest factory prototype lineup in American racing history.
GTP cars use the LMDh (Le Mans Daytona h) specification — they comply with both IMSA and FIA WEC rules simultaneously. That means the Porsche 963 racing at Sebring is the same car that raced at Le Mans. Factory programs from Porsche, Cadillac, BMW, Acura, and Aston Martin bring full engineering resources, unlimited testing, and the world's best professional drivers.
4.6L flat-6 biturbo + hybrid. Cars #6 & #7 (Porsche Penske), #5 (JDC-Miller). Defending Sebring champions. Most successful LMDh car to date.
GM's LMDh entry. Cars #10, #40 (Wayne Taylor Racing), #31 (Cadillac Whelen). 2024 Sebring winners and 2023 Sebring winners in this field.
BMW's LMDh with a 4.0L turbocharged V8 + hybrid. Cars #24 & #25 (BMW M Team WRT). Features ex-F1 driver Kevin Magnussen.
Honda/Acura's LMDh developed by HPD. Cars #60 & #93 (Meyer Shank Racing). Features IndyCar legends Scott Dixon and Alex Palou.
The only naturally-aspirated, non-hybrid GTP car — a Cosworth V12 revving to 11,000 RPM. Car #23 (THOR Team). Visually spectacular.