Wrong fuel in a BMW X1 D? Petrol in a Diesel BMW?

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BMW Fuel Drain


Filling Petrol in a Diesel BMW is a common mistake to make. And its solution depends on a variety of factors. If perhaps you want to find out what you have to do to fix it then stay with me.
Listed below are the most important variables to consider whenever making a decision whether to get the car drained:

  1. What level of Petrol have you put in the BMW, taking into account that the fuel capacity of your BMW X1 D is usually about 61 litres?
    1. A tiny quantity of Petrol, less than 3.05 litres of Petrol in a Diesel X1 D will in most cases not be a big problem. Experience has taught us that quantities less than 3.05 litres (which is about 5% of the overall fuel tank volume) is generally capable of being completely diluted through entirely filling the tank with Diesel.
      It's rather unusual to encounter a car going through difficulties because of less than 5% wrong fuel contamination. Be aware that it is very uncommon - definitely not impossible to encounter. There are actually certain cars that won't stand any quantity of contamination at all.
    2. In between 3.05 and 6.1 litres of Petrol in the BMW (5 to 10%) is more of a 50/50 condition. Our working experience demonstrates that as many motorists get away with this as those who break down. Whenever you are deciding whether or not to chance it and just simply top it up consider that it is exactly like wagering it all on black - you will have a 50/50 possibility of it working out.
    3. Anything more than 6.1 litres of Petrol in your Diesel X1 D should promptly be removed as your probability of getting away with this amount of contamination is almost certainly lower than one in fifty - really big odds.
  2. Put some Petrol in a Diesel BMW and drove it: Have you noticed any performance concerns as a result of putting the wrong fuel in the X1 D? If so, have it drained irrespective of the amount of Petrol or the contamination percentage. Still running a car that is already starting to suffer the consequences of wrong fuel contamination will typically end up in more damage being done to the fuel system parts.
  3. Do you need peace of mind?
    In that case get it emptied. Regardless of the contamination ratio, there is invariably some degree of threat associated with operating a Diesel engine on Diesel contaminated with the incorrect fuel. Possible final outcomes of driving on the incorrect fuel can include the motor not starting, running lumpy, lack of power, degradation of the high-pressure pump, damaged or clogged injectors, and the like. These are a few of the commonest Petrol in Diesel symptoms, and should you observe any of them then stop driving and get it drained asap.

Don't simply have any unqualified mechanic to attend your car. We are BMW specialists and possess the certification and knowledge required to ensure you are back on the road with a minimum of hassle or trouble.

Put Petrol in a Diesel BMW

Inadvertently put Petrol in a Diesel BMW? Or possibly even put contaminated fuel in your BMW X1 D?

Give us a call for Help & Recommendations

Give us a call and get reliable advice and sensible assistance for your particular circumstance

We come out and do the fuel drain

We are able to come to you to undertake the full contaminated fuel drain & purge there on scene

All done & You Get Moving Once again

As soon as we have completed you are able to get back moving and get on with your day

Wrong Fuel Drain Specialists

We are the top rated wrong fuel drain specialists in the UK, offering national coverage, for BMW motorists particularly. We principally attend to:

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

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

The Process

The process of removing Petrol from a Diesel vehicle is generally exactly the same for the vast majority of motor vehicles. Needless to say it can vary a bit as each manufacturer has their own distinct fuel system. Even so it still essentially follows the below points:

Petrol in Diesel BMW

Fuel Drain

Empty the Fuel Tank

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Wrong Fuel Drain BMW

System Flush

Clean out the fuel lines & pumps

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Petrol in Diesel Drain BMW

Vehicle Restart

Get the car up and running again

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Petrol in Diesel Questions

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

I put Petrol in a Diesel 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 Diesel car on Petrol 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 Petrol can I get away with in a Diesel 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 Diesel 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.

Get in Touch

In case you have any queries or want our help please Contact Us!
We are able to get you on the road again.

24/7 BMW Helpline

0333 366 0103

Our Business Office

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

Weekdays: 9am to 5pm

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