The Rover-BRM used a widened BRM Grand Prix car chassis from Owen. The car was first entered for the Le Mans 24-hour race in 1963 and raced unofficially as number '00'. It came in 8th and gained the prize for the first gas turbine to finish the race. For 1964 it had a new body designed by William Towns. The engine gained a heat exchanger using ceramic discs made by Corning of America.

In 1965 it ran in the 2-litre class, with Graham Hill and Jackie Stewart. In spite of overheating and damage to the turbine blades, the Rover-BRM survived the 24 hours at an average speed of 98.8 mph (159 km/h), achieving 10th place, the highest placed British car.