Understanding fuel policies and hidden fees in car hire

Hiring a car often looks simple at first. You see a competitive price and book quickly, only to discover extra costs at pick-up or after you return the car. Fuel policies, refuelling charges, insurance extras and deposits can all affect the final bill. Sometimes more than expected.

This guide breaks down how car hire fuel policies and hidden fees work, so you know what to expect and how to avoid unwanted surprises.

When it comes to hiring a car, the price you see online is rarely the amount you finally pay. That’s because car hire pricing is often layered, with separate charges for fuel, insurance, extras and deposits.

Decisions are also made quickly at the rental desk, often after a long journey when you’re short on time. And to make it more complicated, rules and terminology vary by provider and country. If you’ve been caught out before, you’re not alone. It’s a common experience.

Fuel policies are one of the biggest causes of confusion and unexpected charges. They set out how much fuel is in the tank when you collect the car and what’s expected when you return it.

Understanding the policy and knowing what proof you might need can help you avoid extra charges later.

With full to full, you collect the car with a full tank and return it full. This policy is often seen as the fairest option, because you only pay for the fuel you use at local pump prices.

 But there are still things to watch out for: 

• Some providers ask you to refuel within a certain distance of the return location

• Fuel gauges aren’t always precise, so a tank that looks full might be recorded as slightly under

 Keeping a fuel receipt from a nearby petrol station can help resolve any issues.

Prepaid or full to empty usually means you pay upfront for a tank of fuel and return the car at any level. This can be convenient if you expect to use most of the fuel or have an early return. However: 

• Unused fuel is usually not refunded

•  Fuel prices are often higher than rates at local pumps

•   Admin or handling fees might apply

 For shorter trips, this type of policy can work out more expensive than expected.

“Same to same” means returning the car with the same fuel level it had at pick-up. This might sound simple, but it can be hard to prove what counts as half a tank, for example.

Other variations, “like half to half”, work in a similar way. Always check how the fuel level is recorded and what happens if the reading is slightly off.

There’s a difference between paying for missing fuel and paying a service charge to refuel the car. If the tank isn’t at the agreed level, many providers will charge you for: 

• The fuel itself, often at a higher rate than pump prices

• A refuelling or admin fee on top

 Even a small shortfall can lead to a significant charge. Fuel receipts and photos of the gauge can help if you need to dispute it.

Extra costs aren’t always made clear upfront. These common add-ons can push up the total price:

Optional extras added at the desk

 You may be offered: 

• Additional driver cover

• Child seats

• Sat navs

•  Cross-border travel fees

•  Young driver surcharges

 These are often charged per day and can add up fast. It helps to check prices when booking, rather than deciding on the spot. 

Deposits and pre-authorisations

 A pre-authorisation is a temporary hold on your credit card. It’s not a charge, but it does reduce your available balance.

 The amount can be high, especially if it covers potential fuel or damage costs. If there’s a query, the hold may not be released straight away. Photos and receipts can help resolve things more quickly.

Most car hire policies include basic insurance, but the level of cover and exclusions vary. A key term to understand is the “excess”. This is the amount you’d need to pay towards a claim.

 At pick-up, you may be offered extra cover to reduce your excess. These conversations often feel rushed, so it helps to know in advance:

• What insurance is already included

• The excess amount

• Any exclusions or conditions

 Always check the rental agreement and policy wording, as terms differ. You can also read Everywhen’s car hire excess insurance guidance alongside your rental documents for more help.

Before you book

• Check the fuel policy and refuelling charges

• Review what’s included in the price

• Think about any extras you’ll need

 Save confirmation emails and booking terms.

 At pick-up 

•   Check fuel level and mileage

• Take photos of the car’s condition and the fuel gauge

• Ask questions before signing if anything seems unclear

 When returning the car

• Refuel close to drop-off if required

•    Keep fuel receipts

• Take photos of the car and fuel gauge at return 

If you see a charge you don’t recognise, gather your booking documents, receipts and photos. Ask the rental company for a clear breakdown of the charge and keep records of all contact.

 If needed, follow the provider’s complaints process or relevant consumer support routes, depending on where you hired the car.

Fuel policies and extra charges are a common source of confusion in car hire. Knowing how they work and preparing before you travel can reduce stress and unexpected costs. Get in touch with our experts to help you prepare with confidence.

The car hire excess insurance policy is provided and administered by our partner insurance4carhire. Everywhen act as an introducer for Insurance4carhire. 

You can find out more about the insurance4carhire car excess insurance policy, or get a quote for car hire excess insurance on the insurance4carhire website. 

Consistent with our policy when giving comment and advice on a non-specific basis, we cannot assume legal responsibility for the accuracy of any particular statement. In the case of specific problems we recommend that professional advice be sought. 

 insurance4carhire is a trading name of Atlanta Insurance Intermediaries Limited. Authorised and Regulated by the Financial Conduct Authority under firm reference number 309599.