It should be the same amount than when they gave you the car or they'll charge you like $5 a gallon
If you picked it up with a half tank , then you have to return it with the same amount of gas. Or you will be charged 5.00 per gallon , gas plus there employee filling it . $$$$$
That will be nice of you but you don't need to
It's in your best interest to return it at the level you recieved it.
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