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What Happens if I Put Petrol in a Diesel Car?

Putting petrol in a diesel car is a common mistake that can have serious consequences. In the United Kingdom, where diesel cars are popular, it is important to understand the implications of such an error.

When petrol is added to a diesel fuel system, it can cause significant damage. Diesel fuel acts as a lubricant for the fuel pump and injectors, while petrol acts as a solvent. This means that petrol can wash away the lubrication and cause the fuel pump and injectors to wear more quickly. Additionally, petrol has a lower flashpoint than diesel, which means that it is more likely to ignite prematurely in a diesel engine. This can lead to engine damage and even fires.

If you accidentally put petrol in your diesel car, it is crucial not to start the engine. The best course of action is to immediately contact a professional breakdown recovery service. They will drain the fuel tank and flush the fuel system to remove any traces of petrol. In some cases, additional repairs may be required, depending on the extent of the damage caused.

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Frequently Asked Questions (FAQs):

1. How common is it to put petrol in a diesel car?
Accidentally putting petrol in a diesel car is more common than you might think. It happens to thousands of drivers each year in the UK.

2. Can I drive my car with petrol in it?
It is strongly advised not to drive a diesel car if it has been filled with petrol. Doing so can cause severe damage to the engine.

3. How long do I have until the damage is irreversible?
The longer you drive a diesel car with petrol in it, the more damage it will cause. It is best to address the issue as soon as possible to minimize potential damage.

4. Will insurance cover the cost of repairs?
Insurance policies vary, but most comprehensive policies will cover the cost of repairs resulting from misfuelling.

5. How much will it cost to fix the damage?
The cost of repairs can vary depending on the extent of the damage. However, it can range from a few hundred to several thousand pounds.

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6. Can I prevent misfuelling?
Yes, there are devices available, such as fuel cap stickers or fuel fillers with smaller necks, that can help prevent misfuelling.

7. Are diesel cars being phased out in the UK?
The UK government plans to ban the sale of new diesel and petrol cars by 2030 as part of efforts to reduce carbon emissions and promote electric vehicles.