Car rental fuel policy explained
The fairest policy is full-to-full: collect the car full, return it full, pay only for the fuel you use. Avoid full-to-empty (prepaid) deals, where you buy a whole tank up front, lose any fuel you don’t use, and often pay above the pump price. Photograph the gauge at pick-up and return and keep your receipt.
The policies, compared
| Full-to-full (fairest) | You collect the car full and return it full. You only pay for the fuel you actually use. Refuel just before returning and keep the receipt. |
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| Same-to-same | Return the tank at the level you collected it. Fair, but harder to match exactly - photograph the gauge at pick-up and return. |
| Full-to-empty (prepaid) | You pay for a full tank up front and return it empty. Any fuel you do not use is lost, and the per-litre price is often above the pump - usually best avoided. |
| Half-to-half / other | Some desks pre-fill a partial tank. Check the exact rule and the refuelling charge on your agreement before you drive off. |
How to avoid a fuel charge
Two habits cover almost every case. First, on a full-to-full rental, refuel at a station near the drop-off and keep the receipt as proof of a full tank. Second, photograph the fuel gauge and odometer both at pick-up and at return - dated images are the simplest defence against a disputed refuelling fee or service charge.
Where fuel fits in the total price
Fuel is always the driver’s cost, whatever the rate - but an all-inclusive Cardamar booking, handled by Sunny Cars, keeps the rest predictable: full insurance, zero excess, unlimited mileage and airport fees are already in one price, so fuel and any tolls are the only routine extras to budget for. A fair full-to-full policy keeps that last piece honest too.
Car rental fuel policy - FAQ
Which fuel policy is best?
Full-to-full is the fairest: you collect the car full, return it full, and only pay for what you use. Avoid full-to-empty (prepaid) deals where unused fuel is lost and the per-litre price is usually above the pump.
What is a full-to-empty policy?
You pre-pay for a full tank at pick-up and return the car empty. In practice you almost never run it to empty, so you pay for fuel you do not use - and often at a marked-up rate.
Do I get a refund for unused fuel?
Rarely on prepaid policies - that is the catch. On full-to-full there is nothing to refund because you only ever paid for what you used.
Should I refuel before returning the car?
On full-to-full, yes - fill up near the drop-off and keep the receipt as proof. Returning below full can trigger a refuelling fee plus a service charge.
How do I avoid fuel disputes?
Photograph the fuel gauge and odometer at pick-up and return, and keep your final fuel receipt. It is the simplest protection against an unexpected charge.