I think its actually less than a U.S gallon

 

we buy gas buy the litre but when i enter all that info into my fuelly's account it does all the math for me. an imperial gallon is a bit larger than a us gallon but fuelly's has everything correct since i enter in my info as litres and km's

 

Yea my bad. Quick search for the answer shows I was wrong. Little bit of a difference between the two

 

Yep, they measure in liters, so 3.8 liters in a us gallon.