Wrong fuel in your Mini One? Diesel in your Petrol Mini?

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Mini Fuel Drain


Putting Diesel in a Petrol Mini is a usual mistake. And exactly what you need to do about it is based on a number of factors. Assuming you want to find out what you need to do about this then read on.
These are the most crucial variables to keep in mind when making a decision whether to have the car drained:

  1. What amount of Diesel did you put in the Mini, keeping in mind that the fuel capacity of your Mini One is probably approximately 50 litres?
    1. A modest quantity of Diesel, something like 2.5 litres of Diesel in a Petrol One will usually not be a significant problem. Experience has taught us that anything under 2.5 litres (which is 5% of the fuel tank volume) is generally able to be adequately diluted through completely topping up the remainder of the tank with the right fuel.
      It's pretty unusual to find a car having problems with lower than 5% wrong fuel contamination. Remember that it is infrequently found - definitely not impossible to find. There are some vehicles that will not stand any quantity of contamination at all.
    2. Anywhere between 2.5 and 5 litres of Diesel in the Mini (5 to 10%) is more of a 50/50 situation. Our practical experience has proven that as many people get away with this as those who don't. When you are deciding on whether or not to risk it and simply fill it up remember that it is just like betting your car on black - you have got a 50/50 possibility of it working out.
    3. Anything over 5 litres of Diesel in your Petrol One ought to straight away be drained out seeing as your likelihood of succeeding with that quantity of contamination is more than likely less than one in 50 - seriously huge odds.
  2. Put some Diesel in a Petrol Mini and drove it: Have you noticed any performance issues as a result of putting the incorrect fuel in your One? If that's the case, get it emptied irrespective of the quantity of Diesel or the contamination ratio. Continuing to run running a car that is beginning to suffer from the consequences of fuel contamination can typically result in progressively more damage affecting your fuel system components.
  3. Are you interested in assurance?
    In that case get it drained. Regardless of the contamination ratio, there is invariably some amount of threat in connection with driving a Petrol vehicle on Petrol contaminated with Diesel. Likely results of driving a vehicle on the incorrect fuel can include the motor not starting, running unevenly, reduced power, degradation of the high-pressure pump, worn out or blocked injectors, and so forth. These are a few of the most common Diesel in Petrol symptoms, and should you detect any of them stop driving and have it drained immediately.

Don't simply get any jack-of-all-trades to attend your vehicle. We are Mini experts and have got the certification and experience necessary to make sure that you are back on the road with a minimum of hassle or worry.

Put Diesel in a Petrol Mini

By mistake put Diesel in a Petrol Mini? Or possibly even put contaminated fuel in your Mini One?

Give us a call for Assistance & Recommendations

Contact us and get genuine advice and sensible assistance for your exact circumstance

We show up and drain it

We are able to go to you to undertake the full fuel retrieval & purge there on scene

Once performed You Get Going Once again

When we have completed you can get back on the road and get on with your trip

Wrong Fuel Drain Specialists

We are the primary wrong fuel drain specialists in the UK, having national coverage, for Mini motorists especially. We typically attend to:

  • Unleaded petrol in a Diesel Car
  • Diesel in your Unleaded Petrol Car
  • AdBlue fuel contamination
  • Water fuel contamination

We are Mini specialists and have successfully drained hundreds of Petrol Mini vehicles. Whether it's at the roadside, on a petrol station forecourt, or even at your house, we are able to get you on the road again.

The Process

The method of getting rid of Diesel from a Petrol vehicle is fundamentally similar for the majority of cars. Naturally it can differ to some extent as each manufacturer has their unique fuel system. Having said that it still essentially observes the following points:

Petrol in Diesel Mini

Fuel Drain

Empty the Fuel Tank

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Wrong Fuel Drain Mini

System Flush

Clean out the fuel lines & pumps

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Petrol in Diesel Drain Mini

Vehicle Restart

Get the car up and running again

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Diesel in Petrol Questions

When someone has put Diesel in a Petrol car they have a few very common questions. So we have compiled a list of the most Frequently Asked Questions for you

I put Diesel in a Petrol car and drove it. What do I do?


Turn off the car as soon as possible and call us. Continuing to run a vehicle on the wrong fuel can potentially damage it. We will be able to give you advice and assistance based on your circumstances

Will driving a Petrol car on Diesel cause damage to it?


It can. However, if the problem is caught and remedied quickly the risks will be minimal. Of the 1,500 vehicles we attend every month, less than 0.5% have suffered and substantial damage requiring parts replacement.

How much Diesel can I get away with in a Petrol car?


The safe answer is none. However you might be able to get away with a very low contamination ratio. That being said, we always highly recommend draining anything over a 5% contamination ratio asap.

I know about petrol in diesel, but what about Super Unleaded?


Putting Super Unleaded, or Shell V-Power, BP Ultimate Unleaded, etc, will have the exact same effect as putting regular unleaded petrol in your diesel car and will need to be drained out and flushed.

Will getting you to do a fuel drain void my warranty?


No! The EU Block Exemption Regulations clearly state that "the work can be carried out by as long as that garage uses manufacturer approved parts and correctly follows the manufacturer's service schedule."

Can I top it up with Petrol and add some 2-stroke oil?


This might work on some vehicles in some cases, but in the majority on instances it won't and you risk damaging the Lambda sensors as well as fuel pump and injectors, just as a regular misfuel.

Call us

In the event that you have any enquiries or require some help please Contact Us!
We are able to get you moving once again.

24 hour Mini Helpline

0333 366 0103

Our Corporate Office

Fuel Fixer Ltd, Linx House, 147 London Road, East Grinstead, RH19 1ET


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