Put the Wrong Fuel in Your Car? What to Do, and How to Avoid It

Putting petrol in a diesel car, or diesel in a petrol car, is an easy mistake – especially in a new, hired or borrowed car. What you do in the next few minutes makes a big difference to the repair bill. This course explains exactly what to do, why you must not start the engine, and simple habits to avoid misfuelling.

This course gives general guidance. Always follow your vehicle handbook and your breakdown provider’s advice. Tutwoo is not connected with the AA or RAC.

© 2026 Tutwoo UK Limited. This course was created in-house by Tutwoo and is our original work. It is for your own learning only: please do not copy, share, record or resell it.