CNG cars— 208 cars

What makes a cng car.

Compressed natural gas burns cleaner than petrol — roughly a quarter less CO₂, far less NOₓ and essentially no particulates — and in most European markets it costs meaningfully less per kilometre. Factory CNG cars are bi-fuel: they run on gas until the tank empties, then switch to a small petrol reserve automatically, so range anxiety never enters the picture. Because the engine is designed for it, there is no drivability penalty and no aftermarket conversion to maintain.

The catch is infrastructure. CNG station coverage is good in Italy and parts of Germany, Austria and the Czech Republic, and thin almost everywhere else, so the fuel suits drivers with a predictable radius more than long-distance improvisers. The cylinders also take up space, usually under the boot floor. Where the stations exist, the running-cost advantage over petrol is one of the largest available without plugging in.

• 01Drivers in Italy, Germany, Austria or Czechia, where stations are within reach
• 02High annual mileage on predictable routes, where the per-kilometre saving compounds
• 03Fleets wanting lower CO₂ without changing how vehicles are refuelled
• 04Buyers who want cleaner combustion but need the flexibility of a petrol reserve
• 05Anyone priced out of an EV who still wants a real emissions reduction