Wrong fuel in a BMW 430d? Petrol in a Diesel BMW?

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Filling Petrol in a Diesel BMW is a common mistake to make. And its remedy varies according to a variety of things. If perhaps you would like to know what you have to do to fix it then keep reading.
Listed below are the main variables to be aware of whenever determining whether or not to have your car drained:

  1. Exactly how much Petrol have you put into the BMW, considering that the fuel tank capacity of the BMW 430d is normally about 60 litres?
    1. Hardly any Petrol, as little as 3 litres of Petrol in a Diesel 430d will generally not be a massive problem. Experience has proven to us that quantities less than 3 litres (which is about 5% of the entire fuel tank capacity) is quite often capable of being adequately diluted through totally topping the rest of the tank with Diesel.
      It is highly uncommon to come across a vehicle having problems due to lower than 5% incorrect fuel contamination. Bear in mind that it is very uncommon - definitely not impossible to encounter. You will discover certain vehicles that will not endure any level of contamination whatsoever.
    2. Somewhere between 3 and 6 litres of Petrol in the BMW (from 5 to 10%) is a 50/50 scenario. Our working experience has shown that as many drivers get away with it as all those who don't. Whenever you are figuring out whether to risk it and simply fill it up recognise that it is much like betting your car on black - you have a 50/50 chance of it working.
    3. Anything in excess of 6 litres of Petrol in your Diesel 430d really should right away be removed because your probability of getting away with that amount of contamination is probably below one in fifty - really long odds.
  2. Put some Petrol in a Diesel BMW and drove it: Have you seen any performance difficulties as a result of putting the wrong fuel in the 430d? If so, get it emptied regardless of the quantity of Petrol or the contamination percentage. Proceeding to drive driving a car that is already starting to suffer from the consequences of fuel contamination can typically result in more and more harm affecting your fuel system.
  3. Do you want security?
    Then simply just get it removed. Regardless of contamination ratio, there is invariably some degree of risk connected to driving a Diesel engine on Diesel contaminated with Petrol. Likely implications of driving a car on the incorrect fuel normally include the engine refusing to start, running lumpy, decrease in power, wearing of the high-pressure pump, damaged or blocked injectors, and the like. These are some of the commonest Petrol in Diesel symptoms, and in the event that you recognise any of them stop and have it removed right away.

Refrain from having any general so-and-so to attend your automobile. We are BMW experts and possess the skills and working experience necessary to ensure you get back on the road with a minimum of hassle or worry.

Put Petrol in a Diesel BMW

Accidentally put Petrol in a Diesel BMW? Or perhaps even put contaminated fuel in your BMW 430d?

Contact us for Assistance & Guidance

Call us and get reliable advice and sensible assistance for your particular situation

We come out and drain it

We are able to go to you to perform the complete fuel retrieval & flush there on scene

All done & You Get Moving Again

As soon as we have finished you are able to get back on the road and get on with your trip

Wrong Fuel Drain Specialists

We are the leading wrong fuel drain professionals in the UK, boasting countrywide coverage, for BMW motorists particularly. We typically attend to:

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

We are BMW specialists and have successfully drained thousands of Diesel BMW vehicles. No matter if it's at the roadside, on a filling station forecourt, or even at your house, we are able to get you moving again.

The Process

The method of draining Petrol from a Diesel car is generally exactly the same for the majority of vehicle makes. Naturally it may differ slightly as every manufacturer has their own fuel system. Even so it still generally observes the below guidelines:

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 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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