What Happens If You Put Petrol in a Diesel Car? Expert Advice to Avoid Engine Damage

Learn why putting petrol in a diesel car is dangerous and what to do immediately to prevent costly engine damage.

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Do not start the engine if you've put petrol in a diesel car. Petrol can cause significant damage to a diesel engine. Immediately call a professional to drain the fuel tank. Starting the engine could lead to costly repairs, whereas draining the tank might save you from more extensive damage.

FAQs & Answers

  1. Can I start my diesel car if I accidentally put petrol in it? No, you should not start the engine. Starting can cause serious engine damage. Instead, immediately contact a professional to drain the fuel tank.
  2. What damage does petrol cause to a diesel engine? Petrol can compromise the lubrication and combustion process in diesel engines, causing severe internal damage and expensive repairs.
  3. How long can petrol remain in a diesel car before damage occurs? Damage can begin as soon as you start the engine after putting petrol in a diesel car, so avoid starting it and have the tank drained promptly.