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Can You Put Diesel in a Petrol Car? Risks and What to Do

Learn why you should never put diesel in a petrol car and the steps to take if it happens to avoid engine damage.

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Video transcript

No, you should never put diesel in a petrol car. Doing so can cause significant engine damage and may prevent the car from starting. If diesel is accidentally added, do not start the car. Instead, have it towed to a mechanic to drain the fuel system.

Questions and answers

  1. What happens if you put diesel in a petrol car?

    Putting diesel in a petrol car can cause significant engine damage and often prevents the car from starting.

  2. Can I start the car if I accidentally put diesel in a petrol car?

    No, you should avoid starting the car because it can cause further damage. Have the vehicle towed to a mechanic instead.

  3. How is diesel removed from a petrol car's fuel system?

    A mechanic will drain the fuel system completely and may clean affected components to ensure no diesel remains.

  4. Is it possible to fix a petrol car after putting diesel in it?

    Yes, if handled promptly by a professional mechanic, the car can often be repaired without lasting damage.

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For more information on fuel-related car issues and maintenance tips, check out our other videos on petrol vs diesel engines, fuel system care, and how to avoid common fueling mistakes.