Hydrogen Fuel Cell Cars: How They Work and Are They Worth It?

A hydrogen fuel cell car is an electric car that makes its own electricity on board from hydrogen, rather than storing it in a big battery. It refuels in minutes and only emits water from the exhaust, but in the UK there are very few public filling stations and only a couple of models on sale, so for most drivers it is not a practical choice yet.

How does a hydrogen car work?

Hydrogen gas is stored in high-pressure tanks. It is fed into a fuel cell, where it reacts with oxygen from the air. That reaction produces electricity, which drives an electric motor, plus water and some heat.

There is also a small battery that stores energy from braking and helps when accelerating, much like a hybrid. To drive, a hydrogen car feels like a battery electric car: quiet, smooth and with no gears.

Are hydrogen cars better for the environment?

At the tailpipe, yes. The only emission is water vapour. The bigger question is how the hydrogen is made.

• Green hydrogen is made by splitting water using renewable electricity. This has a low carbon footprint.

• Grey hydrogen is made from natural gas, which releases carbon dioxide unless it is captured.

Making hydrogen, compressing it and turning it back into electricity also loses a lot of energy along the way. A battery electric car uses electricity more directly and is generally more efficient overall.

Can I buy a hydrogen car in the UK?

Only a very small number of models have been sold here, with the Toyota Mirai and Hyundai Nexo the best known. They are expensive to buy new, and used examples are rare.

The bigger problem is refuelling. There are only a handful of public hydrogen stations in the UK, spread thinly across the country, and several have closed in recent years. Unless you live and work close to one, a hydrogen car is very hard to live with.

How do hydrogen cars compare with electric cars?

• Refuelling time. Hydrogen wins, taking minutes rather than the half hour or more for a rapid charge.

• Where to refuel. Electric cars win easily. You can charge at home and there are many thousands of public chargers.

• Running costs. Hydrogen is currently expensive per mile compared with charging an electric car at home.

• Choice. There are hundreds of electric models new and used, and only a couple of hydrogen ones.

For a practical comparison of fuel types, see our guide to hybrid or electric and our EV hub.

Where is hydrogen likely to be used?

Many in the industry now see hydrogen as better suited to heavy vehicles that travel long distances and need fast refuelling, such as buses, lorries and some trains, rather than private cars. Battery electric cars have moved much faster for everyday use.

Common questions

Is hydrogen safe in a car?

Hydrogen cars are built and tested to the same crash safety standards as other cars, and the tanks are designed to withstand severe impacts. Hydrogen is flammable, as petrol is, so the systems include sensors and shut-off valves.

How far can a hydrogen car go on a tank?

Manufacturers quote ranges similar to a petrol car or a long-range electric car. As with any car, real-world range depends on speed, weather and driving style.

Should I wait for hydrogen instead of buying electric?

For most drivers, no. With so few filling stations and models, hydrogen is unlikely to be a practical option for private motorists in the near future. A petrol, hybrid or electric car is the realistic choice for now.

Thinking about your next car?

If you are weighing up petrol, hybrid or electric, browse the cars we have in stock or compare running costs with our cost comparison calculator. You can find us in Barnsley, South Yorkshire, or call our sales team on 01226 574410.

Updated October 2026.