it should be on the last page of the owners manual you could also fill a gas can keep it in the trunk and when you run out use the gas can to get you to a gas station you will know how much was in the gas can and the pump will till you how much more you put in add the two amounts
90 litres
18 Gallons
70 litres.
Fuel tank capacity for E46 models is 16.6 gallons (63 liters).
A 2001 S10, regular cab, pickup, 2.2L engine, has a 18 US gallon capacity fuel tank.
Fuel capacity on a 2001 Pontiac Bonneville is 18 gallons.
A 2017 Audi Q7 SUV fuel tank capacity is 22.5 US gallons.
The fuel tank capacity should be 58.5 liters or 15.4 gallons
22 gallons
26.4 Gallons
100l
18.5 gallons full capacity