Incorrect fuel in your BMW x6 M? Diesel in a Petrol BMW?

We can help!
Call us: 0333 366 0103
BMW Fuel Drain


Filling up with Diesel in a Petrol BMW is a regular mistake to make. And exactly what you should do about it is dependent upon a variety of things. If perhaps you want to know what it is advisable to do about this then stay with me.
Right here are the main factors to to consider whenever deciding whether to have the car drained:

  1. What level of Diesel did you put in to the BMW, taking into consideration that the fuel capacity of the BMW x6 M is most likely roughly 85 litres?
    1. A tiny amount of Diesel, something like 4.25 litres of Diesel in a Petrol x6 M will typically not necessarily be a huge problem. Experience has demonstrated to us that quantities less than 4.25 litres (which is roughly 5% of the entire fuel tank) is oftentimes capable of being adequately diluted by thoroughly topping up the rest of the tank with the correct fuel.
      It is relatively rare to come across a vehicle suffering from issues because of below 5% wrong fuel contamination. Please remember it's uncommon - in no way impossible to encounter. You can get a few automobiles that don't stand any degree of contamination in the slightest.
    2. Between 4.25 and 8.5 litres of Diesel in the BMW (5 to 10%) is really a 50/50 condition. Our working experience has shown that as many motorists get away with this as those who break down. Any time you're deciding on whether or not to chance it and simply fill it up bear in mind that it is much like wagering everything on black - you have got a 50/50 chance of it working out.
    3. Anything in excess of 8.5 litres of Diesel in your Petrol x6 M ought to immediately be drained as your probability of succeeding with this quantity of contamination is almost certainly below one in fifty - genuinely big odds.
  2. Put Diesel in a Petrol BMW and drove it: Have you noticed any performance troubles as a result of putting the wrong fuel in your x6 M? If that's the case, have it emptied no matter the amount of Diesel or even the contamination ratio. Proceeding to run running a car that is already starting to suffer from the effect of fuel contamination can just result in even more harm being done to your fuel system parts.
  3. Are you looking for peace of mind?
    Then get it removed. Whatever the contamination percentage, there is invariably some extent of risk connected with operating a Petrol vehicle on Petrol contaminated with Diesel. Likely results of driving on the incorrect fuel include the motor not starting, running unevenly, loss of power, degradation of the high-pressure pump, worn out or bunged injectors, and so forth. These are some of the most frequently seen Diesel in Petrol symptoms, and if you observe any of them then stop and have it removed asap.

Stay away from getting any jack-of-all-trades to try to drain your automobile. We are BMW experts and hold the certification and knowledge required to ensure that you get back on the road with minimal hassle or trouble.

Put Diesel in a Petrol BMW

Inadvertently put Diesel in a Petrol BMW? Or possibly even put contaminated fuel in your BMW x6 M?

Give us a call for Help & Recommendations

Contact us and receive genuine recommendations and practical help for your specific circumstances

We come out and drain it

We can reach you to undertake the full contaminated fuel removal & purge there on scene

Once done You Get Moving Once again

Once we are done you will be able to get back on your way and get on with your trip

Wrong Fuel Drain Specialists

We are the leading wrong fuel drain professionals in the UK, offering countrywide service, for BMW motorists in particular. We predominantly deal with:

  • Unleaded petrol in a Diesel Vehicle
  • Diesel in an Unleaded Petrol Vehicle
  • AdBlue contamination
  • Water fuel contamination

We are BMW specialists and have successfully drained thousands of Petrol BMW vehicles. Whether it's at the roadside, on a filling station forecourt, or even at home, we are able to get you moving again.

The Procedure

The method of removing Diesel from a Petrol car is generally exactly the same for the vast majority of vehicle makes. Of course it does vary to some degree as every make has their unique different fuel system. Nevertheless it still fundamentally adheres to the following guidelines:

Petrol in Diesel BMW

Fuel Drain

Empty the Fuel Tank

View more
Wrong Fuel Drain BMW

System Flush

Clean out the fuel lines & pumps

View more
Petrol in Diesel Drain BMW

Vehicle Restart

Get the car up and running again

View more


Hours a Day


Days a Week





Our Partners

Just some of the few people we work with to bring you the best petrol in diesel service possible

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.

Contact Us

Should you have any questions or want some help please Call us!
We are able to get you going once again.

24 hour BMW Helpline

0333 366 0103

Our Business Office

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

Weekdays: 9am to 5pm

Important Info

Fully Insured

VAT Registered

APEX Certified


Fully Mobile

Professionally Trained