The amount of gas an idling car uses varies depending on engine type, size, etc. Compact sedans with 2.0-liter engines use about the same amount of gas while idling. For comparison’s sake, large sedan with a 4.6-liter engine consumes about twice as much fuel while idling. Transit buses consumed the most gas while idling at nearly 1 gallon per hour.
See the chart below for a complete list.
|VEHICLE TYPE||FUEL TYPE||ENGINE SIZE|
|GROSS VEHICLE WEIGHT|
|IDLING FUEL USE|
(GAL/HR WITH NO LOAD)
|Medium Heavy Truck||Gas||5-7||19,700-26,000||0.84|
|Medium Heavy Truck||Diesel||6-10||23,000-33,000||0.44|
1. It takes millions of years for fossil fuels to develop.
2. The fossil fuels we use today began forming during the Carboniferous Period which was before dinosaurs ruled the Earth.
3. Around 90% of our energy comes from fossil fuels.