The airfuel mixture is ignited by a spark from the spark plug. Only about 1230 of the energy from the fuel you put in a conventional vehicle is used to move it down the road depending on the drive cycleThe rest of the energy is lost to engine and driveline inefficiencies or used to power accessories. 5 Common Uses Of Oil The spark plug detonates the air vapor mix then expansion of the product g. . Answer 1 of 7. The first scenario involves a fire in a closed car park without mechanical ventilation. The engine you choose should be in good condition and run properly on gasoline. All things gasoline involve the release of energy when gasoline burns. Stock photography copyrighted Gasoline octane and lead levels increased over time. Cars burn gasoline to produce heat which is used to do mechanical work. Biobutanol has a higher energy content than ethanol so there is a much lower loss of fuel economy. Compressio...