The engine runs primarily on the latter; gasoline is only used to start the car or if it runs out of methane. Bi-fuel vehicles are only available in Europe.

It's great for drivers who mostly do short journeys, but need a car that can also cover high mileages occasionally. Read more here What is a bi-fuel car? A bi-fuel car is one that can run on two ...

Convertins an Optra to CNG technically makes it a bi-fuel vehicle, since the car can still run on petrol. Nonetheless, GM will begin selling the Optra CNG in markets where CNG fuel is readily ...

If you are looking for a CNG car under ₹10 lakh with a plethora of features ensuring value for money, here are your options ...

The two-star Euro NCAP safety rating is disappointing though. The Bi-Fuel let's you run your car on petrol or LPG and is our pick of the range.