As a general rule, finding a car which uses less fuel is preferable to purchasing one that uses lots of fuel. Most modern economical cars can cover more than 100 kilometers per gallon, and although the majority of these have diesel engines, small petrol engines can be almost as economical.

The plus point for petrol powered cars is the abillity to be converted to use LPG or CNG which is a much more econimical solution, aspecially for petrol powered cars with large engine capacities. As a result you will find a number of used cars which have already had this conversion.