None. They use diesel fuel, which a North American tractor might hold up to 300 US gallons of (although 250, give or take, is a bit more common).
a lot people hold gas to fart omg
about 20
To be exact it would be 0 gallons of gas. Semis run on diesel. they usually hold 50-100 gallons.
ALOT
How much gas in the tank
The Vespa is able to hold 2.4 gallons of gas. As a scooter, they are not made to hold a lot of gas but they are made to give good gas mileage, so you don't need that much gas.
they can hold up to about 6 galons
14.5 gallons
20 gallons
8.8 Gallons
1liter
5 gallons!