The answer will vary depending on whether you are talking about gallons of air, gallons of water, gallons of salt, etc.
What type of car? In the city or in the countryside? How careful is the driver?And, more pedantically, US gallons or Imperial gallons?
Depends on the type of engine.
The average person uses approximately 70 gallons of water each day.
10 gallons for 5 fills 6 gallons for 3 fills etc.
The official statistics according to the EIA (Energy Information Administration) are that the US uses 9,253,000 barrels/day or 388.6 million gallons/day. Read more:...