Fastest hydrogen-powered piston-engine vehicle

What to remember

Andy Green at the wheel, hydrogen in the engine: on 11 August 2026, the JCB Hydromax reached 653.908 km/h (406.320 mph), a speed certified by the FIA for a hydrogen-powered piston-engine vehicle.

The Hydromax is a streamliner car designed to break the land speed record for a hydrogen-engined vehicle. It was built for JCB, a British multinational equipment company.

Before the FIA attempt, the car had already set a record at Bonneville Speed Week, at 592.797 km/h (368.347 mph) in the AA/BGS class.