[Monko]

Originally Posted by Mr Tom Morrow

I suspect you hadn't pre paid to bring back empty otherwise you wouldn't have filled up before dropping it off.
Sadly you then became hostage to their sharp tricks. Any slight hint of not being full and they will be all over you like a rash.
I would challenge them but don't hold your breath.

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It couldn't have been any more full - I'd just put another $14 in about at a garage about 3 miles from the airport - for that very reason.
At the end of the day, their website simply states if you return the car full then you won't be charged.

For further info, my ticket out (as stated previously I didn't receive anything on drop off) doe state:

FUEL SVC: .5550/MI 9.990/GAL