How to Check the Fuel Type in a Rental Car

Putting the wrong fuel into a rental car can stop the trip and cause expensive damage. Do not guess from the colour of the pump, nozzle or filler cap. Use the vehicle information and ask CARLOVE whenever the labels are unclear.

1. Read the label inside the fuel flap

Open the fuel flap and look for the manufacturer’s compatibility label. Across Europe, petrol is commonly identified by a circular label such as E5 or E10, while diesel commonly uses a square label such as B7. Match the label on the car with the label on the pump.

2. Check the rental documents and key tag

The rental paperwork should state the required fuel. CARLOVE also marks the fuel type on the key tag for a quick check before refuelling. If two sources appear to disagree, do not fill the tank until staff confirm the correct fuel.

3. Use the dashboard only as supporting information

Some vehicles show the fuel type or compatible grade in the instrument display or vehicle menu. Treat this as supporting information and follow the manufacturer’s label and rental instructions.

4. Ask CARLOVE before paying at the pump

If the label is missing, damaged or unfamiliar, park safely and contact CARLOVE. Send the model, registration number and a clear photo of the label if requested. A short check is safer than choosing by memory.

If the wrong fuel has already been added

• Do not start the engine.
• Switch off the ignition and keep the vehicle in a safe place.
• Contact CARLOVE or the assistance number in the rental documents immediately.
• Do not attempt to drain the tank yourself.

Fuel checklist before a road trip

• Confirm petrol, diesel, hybrid or electric power before departure.
• Match the car label with the pump label every time.
• Keep the rental agreement and assistance details available offline.
• Review the return fuel rule in the rental conditions.

Compare car rental prices in Prague and choose a vehicle whose fuel type and range fit your route. If you arrive by air, see car rental at Prague Airport.

Explore car rental in Prague after confirming the vehicle, fuel and return conditions.