What are the ways to save gas in using your car? First in my list is the speed limit. Running at a speed of 60 kph to 80 kph is giving your engine a comfortable consumption level. Next is avoiding the sudden accelation or abrupt braking since it wastes the momentum of the speed. Do you have excess baggage in your trunk? Things you don’t normally use like things for camping or a gallon of water for the radiator (a liter is enough), it consumes more gas. And not to forget the proper inflation of the tires for under-inflated tires requires more effort.