Many new car owners who buy a CNG vehicle often ask one basic question - should petrol and CNG be kept in equal amounts? The short answer is no. You don’t need a strict 50:50 balance. But ignoring ...

Factory-fitted CNG is built into the car from the start, while an aftermarket kit converts an existing petrol car.

Detroit's Big Three light-truck builders are embracing compressed natural gas, if not as the dominant fuel of the future then as a major alternative to gasoline and diesel. Westport LD, part of ...