At Utah’s Bonneville Salt Flats, the hydrogen-powered JCB Hydromax racer achieved a world record by averaging 406.320 mph (653.909 kph) across two runs, driven by retired Royal Air Force fighter pilot Wing Commander Andy Green. Officiated by the Fédération Internationale de l’Automobile (FIA), the vehicle demonstrated zero-tailpipe-emissions combustion performance using internal combustion engines adapted from commercial machinery.
Engineering a 1,600 BHP Hydrogen Powertrain
The record-breaking run relies on a heavy-duty architecture far removed from typical passenger car design. Two production-based engines, manufactured at JCB’s facility in Foston, Derbyshire, deliver a combined 1,600 bhp to the drivetrain. These power units originated from the company’s commercial equipment lineup, though they underwent substantial reconstruction to survive the extreme thermodynamic pressures of a land speed record attempt.
To handle the unique combustion properties of hydrogen, engineers fitted the engines with spark plugs sourced directly from a Le Mans 24 Hour race engine. Unlike battery-electric vehicles that rely on high-density lithium-ion cells and complex thermal management systems, the Hydromax burns gaseous fuel directly. During a full speed run, the vehicle consumed just over 2 kg (4.4 pounds) of hydrogen while generating roughly 18 liters (about 5 gallons) of water as its only primary byproduct.
Tailpipe emissions consist strictly of water vapor, though high-temperature internal combustion of hydrogen can still generate nitrogen oxides (NOx) depending on the air-fuel mixture ratios.
Chassis Architecture and Pilot Experience
Beneath the aerodynamic composite bodywork, the Hydromax utilizes a specialized steel-frame chassis constructed from minimal amounts of high-strength tubing. Wing Commander Andy Green operates the vehicle from a composite monocoque sub-chassis enclosed within a drag-racing-style steel roll cage.
One engine sits directly behind the driver’s position to spin the rear wheels, while the second engine mounts forward of the cockpit, driving the front wheels through a front-facing gearbox.
Green brings elite high-speed credentials to the project. He previously piloted the ThrustSSC vehicle past the sound barrier on land and drove the JCB Dieselmax when it established the world diesel land speed record two decades prior.
The Industrial Strategy Behind Hydrogen Combustion
The project stems from a £100 million ($135 million) hydrogen engine investment program launched by JCB in 2021. Company chairman Anthony Bamford spearheaded the initiative, aiming to prove that internal combustion technology can run cleanly on alternative fuels without abandoning the robust operating profiles required by heavy construction and agricultural equipment.
JCB maintains that while battery power suits smaller tools and urban passenger cars, heavy machinery requires extended operational windows and rapid refueling capabilities that chemical cells currently struggle to match. Licensing authorities across Europe authorized the commercial sale of JCB’s hydrogen engines last year, marking a regulatory shift toward diversified zero-carbon tech stacks.
Other major European engineering firms are pursuing parallel strategies. Bosch disclosed initial hydrogen engine development roadmaps back in 2023, signaling a broader industrial pivot toward hydrogen combustion as a complement to fuel cells and battery-electric platforms.
The 30-Second Verdict
- The Record: 406.320 mph (653.909 kph) average across two runs at Bonneville Salt Flats.
- The Powerplant: Dual 1,600 bhp production-based hydrogen internal combustion engines built in Foston, Derbyshire.
- The Emissions: Zero carbon dioxide at the tailpipe, consuming roughly 2 kg of hydrogen per run.
- The Context: Part of a £100 million ($135 million) investment by JCB to develop heavy-duty hydrogen alternatives to battery packs.
