Wrong fuel in a BMW 530d? Petrol in a Diesel BMW?

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BMW Fuel Drain


Filling Petrol in a Diesel BMW is a very common mistake to make. And what you have to do about it is determined by a number of things. If you would like to find out what you need to do to sort it out then stay with me.
Let us discuss the most important variables to consider whenever figuring out whether or not to get your car drained:

  1. Exactly how much Petrol did you put in to the BMW, taking into consideration that the fuel tank capacity of your BMW 530d is normally roughly 70 litres?
    1. A small quantity of Petrol, something like 3.5 litres of Petrol in a Diesel 530d will usually not necessarily be a major problem. Experience has proven to us that anything less than 3.5 litres (which is approximately 5% of the whole fuel tank volume) is very often able to be adequately diluted through thoroughly filling the rest of the tank with the appropriate fuel.
      It's quite unusual to find a vehicle suffering from problems because of below 5% incorrect fuel contamination. Remember that it is very uncommon - certainly not impossible to encounter. You will discover a number of cars that don't endure any level of contamination whatsoever.
    2. Anywhere between 3.5 and 7 litres of Petrol in the BMW (5 to 10%) is more of a 50/50 situation. Our working experience has shown that as many drivers get away with it as those people who break down. When you are figuring out whether or not to chance it and simply top it up recognise that it is very much like gambling everything on black - you have a 50/50 chance of it working out.
    3. Anything over 7 litres of Petrol in your Diesel 530d ought to right away be drained seeing as your likelihood of getting away with this amount of contamination is more than likely less than one in fifty - definitely big odds.
  2. Put Petrol in a Diesel BMW and drove it: Have you seen any kind of performance issues ever since putting the wrong fuel in your 530d? In that case, get it removed irrespective of the amount of Petrol or the contamination ratio. Continuing to run driving an automobile that is currently beginning to suffer from the consequences of fuel contamination will just be responsible for more harm affecting your fuel system parts.
  3. Do you need assurance?
    Then simply just get it emptied. No matter the contamination ratio, there is inevitably some extent of risk in connection with running a Diesel vehicle on fuel contaminated with Petrol. Likely outcomes of driving on the incorrect fuel normally include the engine refusing to start, running lumpy, losing power, wearing of the high-pressure pump, worn or bunged injectors, and so on. These are some of the commonest Petrol in Diesel symptoms, and if you recognise any of them then cease driving and get it drained as soon as possible.

Steer clear of having any unqualified mechanic to attend your vehicle. We are BMW specialists and have the qualifications and expertise needed to ensure you get back on the road with little hassle or trouble.

Put Petrol in a Diesel BMW

Unintentionally put Petrol in a Diesel BMW? Or perhaps even put contaminated fuel in your BMW 530d?

Call us for Help & Recommendations

Give us a call and receive genuine advice and sensible help for your particular circumstance

We come out and do the fuel drain

We are able to reach you to perform the complete fuel drain & clean right there on scene

Once completed You Get Moving Again

As soon as we have finished you can get back on your way and get on with your day

Wrong Fuel Drain Specialists

We are the primary wrong fuel drain experts in the UK, boasting countrywide cover, for BMW motorists particularly. We primarily attend:

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

We are BMW specialists and have successfully drained hundreds of Diesel BMW vehicles. Even if it is roadside, on a filling station forecourt, or even at your house, we are able to get you going once again.

The Process

The method of removing Petrol from a Diesel vehicle is basically identical for a large number of motor vehicles. Naturally it does differ a little as each make has their unique fuel system. However it still fundamentally adheres to 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.

Contact Us

If you have any questions or require some assistance please Call us!
We are able to get you moving once again.

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0333 366 0103

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


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