what uses more gas a car ideling or starting?

Answer 1

Favorite Answer

idling. That is how hybrids save gasoline- they shut the engine off when you stop. Then when you accelerate they do it with an electric motor until you reach a certain speed.

Idling at a traffic light can cut your mileage one tenth of a mile per gallon , you lose 1 mile per gallon every 10 traffic lights you stop at.

Answer 2

idling.

you don't use as much gas as you think when starting. starting an engine uses as much gas as approximately 8 seconds of idling. of course engines will vary slightly, but they should all be in the same range. so basically if your gonnna idle for longer than 8 seconds, its better to turn off your engine. common sense, why idle? why keep your engine on if your not moving your car?

Answer 3

idling if running more than about 5-10 seconds.