Updated Alpine Alpenglow Hy6 hydrogen power concept breakthrough

The Alpine Alpenglow concept car now features a 740bhp 3.5-litre V6 hydrogen-powered engine, demonstrating Alpine’s push for clean technology. It’s built with a lightweight LMP3 carbon fiber chassis that improves performance and balances speed and efficiency. Hydrogen tanks are placed in the side compartments and behind the passenger compartment, complying with strict European safety standards. Power is sent to the rear wheels via a six-speed sequential gearbox, ensuring smooth control and precise handling, making the Alpenglow a glimpse into the future of sustainable performance vehicles.

Bruno Famin, Vice President of Alpine Motorsports, said: “With the development of this new Hy6 V6 engine, we are demonstrating our commitment to hydrogen research, which may herald racing applications at high performance levels. This is a solution that continues to cultivate the enthusiasm for racing. The Alpenglow Hy6 concept car is a perfect example of this important step in reducing carbon emissions in motorsport.

Also read: 2025 Audi Q6 Sportback e-tron makes its world debut with a cruising range of 656 kilometers

Alpine Alpenglow Hy6 hydrogen-powered concept car: details

While the Alpine Alpenglow Hy6 looks similar to the earlier Hy4, it has some noteworthy design upgrades. The most noticeable change is the transparent wing, which shows off the engine. The bridge connecting the rear fenders disappears, and the exhaust now exits through the taillights. Larger shark fins were added, improving aerodynamics and not just for style.

Also read: 2025 Lexus LX 700h debuts with hybrid powertrain

The Hy6 has a 3.5-liter V6 engine with twin turbochargers set at a 100-degree angle. It features a solid aluminum block and dry sump lubrication for better performance in harsh racing conditions. The crankshaft features a 20-degree offset crankpin for smoother operation. The cast aluminum cylinder heads are optimized for cooling, and there are four chain-driven camshafts and four valves per cylinder for precise control. Its “super square” design features a 95mm bore and 82.3mm stroke, making it ideal for high rpm. Specially tuned Inconel exhaust pipes allow the engine to rev at up to 9,000 rpm.

The engine produces 740 hp at 7,600 rpm and has a specific power of 211 hp per liter, allowing the car to reach speeds in excess of 330 km/h. A centrifugal clutch and Xtrac sequential gearbox enhance its performance. Although designed for racing, Alpine is considering using the technology for mass production.