Wrong fuel in your Mercedes ML 430? Diesel in a Petrol Mercedes?

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Mercedes Fuel Drain


Putting Diesel in a Petrol Mercedes is a usual error. And its remedy will depend on several factors. Assuming you would like to know what it is best to do to fix it then continue reading.
These are the main variables to be aware of when making a decision whether to have a fuel drain:

  1. How much Diesel did you put in the Mercedes, taking into consideration that the fuel tank capacity of the Mercedes ML 430 is in most cases about 70 litres?
    1. A small quantity of Diesel, something like 3.5 litres of Diesel in a Petrol ML 430 will in most cases not be a huge problem. Experience has demonstrated to us that an amount less than 3.5 litres (which is approximately 5% of the fuel tank volume) is frequently able to be adequately diluted by thoroughly topping up the remainder of the tank with the appropriate fuel.
      It's relatively uncommon to find a vehicle suffering from difficulties because of below 5% incorrect fuel contamination. Bear in mind that it is very unusual - in no way impossible to encounter. There are a number of cars that won't endure any quantity of fuel contamination whatsoever.
    2. Anywhere between 3.5 and 7 litres of Diesel in the Mercedes (5 to 10%) is really a 50/50 condition. Our experience has demonstrated that as many people get away with it as all those who break down. Any time you're deciding whether to risk it and just top it up consider that it is just like betting everything on black - you will have a 50/50 possibility of it working.
    3. Anything above 7 litres of Diesel in a Petrol ML 430 should as soon as possible be removed seeing as your probability of getting away with this amount of contamination is more than likely lower than one in 50 - genuinely big odds.
  2. Put Diesel in a Petrol Mercedes and drove it: Have you seen any performance difficulties ever since putting the wrong fuel in the ML 430? If so, have it emptied no matter the volume of Diesel or the contamination ratio. Proceeding to run driving an automobile that is already starting to suffer from the consequences of fuel contamination will only cause even more harm affecting the fuel system.
  3. Do you want reassurance?
    You should get it drained. Whatever the contamination percentage, there is always some degree of danger caused by driving a Petrol motor on Petrol contaminated with Diesel. Possible consequences of driving a vehicle on the incorrect fuel normally include the motor refusing to start, running lumpy, loss of power, degradation of the high-pressure pump, damaged or clogged injectors, etc. These are some of the most common Diesel in Petrol signs and symptoms, and should you observe any of them stop and get it drained as soon as possible.

Keep away from getting any jack-of-all-trades to try to drain your car. We are Mercedes experts and possess the qualifications and expertise needed to ensure you get back on the road with minimum hassle or worry.

Put Diesel in a Petrol Mercedes

Inadvertently put Diesel in a Petrol Mercedes? Or even put contaminated fuel in your Mercedes ML 430?

Call us for Assistance & Guidance

Contact us and receive genuine guidance and sensible assistance for your exact circumstances

We show up and do the fuel drain

We are able to go to you to carry out the fuel removal & clean right there on scene

All done & You Get Going Once again

As soon as we have completed 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 experts in the UK, having national service, for Mercedes motorists particularly. We mostly deal with:

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

We are Mercedes specialists and have successfully drained thousands of Petrol Mercedes vehicles. Even if it is at the roadside, on a station forecourt, or even at your home, we are able to get you going once again.

The Process

The system of getting rid of Diesel from a Petrol vehicle is basically the same for a large number of vehicles. As you can imagine it can differ to some extent as each make has their own different fuel system. However it still adheres to the below principles:

Petrol in Diesel Mercedes

Fuel Drain

Empty the Fuel Tank

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Wrong Fuel Drain Mercedes

System Flush

Clean out the fuel lines & pumps

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Petrol in Diesel Drain Mercedes

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.

Get in Touch

Should you have any enquiries or want our help please Call us!
We can get you on the road again.

24 hour Mercedes 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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