Contaminated fuel in a Mercedes ML 63 AMG? Diesel in your Petrol Mercedes?

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Mercedes Fuel Drain


Filling up with Diesel in a Petrol Mercedes is a regular error. And its remedy will depend on a few factors. Assuming you would like to know what it is advisable to do about this then stay with me.
Here are the most crucial factors to consider when making a decision whether or not to have your car drained:

  1. What amount of Diesel did you put in to the Mercedes, taking into account that the fuel tank capacity of the Mercedes ML 63 AMG is most likely around 95 litres?
    1. A tiny amount of Diesel, less than 4.75 litres of Diesel in a Petrol ML 63 AMG will normally not really be a huge problem. Experience has taught us that an amount under 4.75 litres (which is approximately 5% of the overall fuel tank) is sometimes able to be sufficiently diluted by totally topping the tank with the right fuel.
      It is extremely rare to find a car going through difficulties with lower than 5% incorrect fuel contamination. Keep in mind that it is infrequently found - definitely not impossible to find. There are actually certain vehicles that won't endure any degree of contamination at all.
    2. Anywhere between 4.75 and 9.5 litres of Diesel in the Mercedes (from 5 to 10%) is a 50/50 situation. Our experience demonstrates that as many drivers get away with this as those people who break down. Whenever you are deciding on whether or not to risk it and just fill it up bear in mind that it is very much like wagering your car on black - you will have a 50/50 possibility of it working out.
    3. Anything more than 9.5 litres of Diesel in your Petrol ML 63 AMG should right away be drained as your likelihood of getting away with this amount of contamination is very likely below one in 50 - seriously big odds.
  2. Put Diesel in a Petrol Mercedes and drove it: Have you noted any performance problems ever since putting the wrong fuel in the ML 63 AMG? In that case, have it drained irrespective of the volume of Diesel or even the contamination percentage. Continually driving a vehicle that is currently beginning to suffer the consequences of wrong fuel contamination will probably just lead to even more harm affecting the fuel system components.
  3. Are you looking for peace of mind?
    Then get it emptied. Regardless of contamination percentage, there is always some degree of risk caused by running a Petrol motor on Petrol contaminated with Diesel. Likely implications of driving a vehicle on the wrong fuel can include the motor refusing to start, running unevenly, losing power, wearing of the high-pressure pump, damaged or bunged injectors, and so forth. These are several of the most typical Diesel in Petrol symptoms, and if you detect any of them then stop driving and have it drained asap.

Avoid having any general so-and-so to try to fix your car. We are Mercedes specialists and have the skills and knowledge necessary to make certain you get back on the road with minimum hassle or worry.

Put Diesel in a Petrol Mercedes

Unintentionally put Diesel in a Petrol Mercedes? Or perhaps even put contaminated fuel in your Mercedes ML 63 AMG?

Contact us for Assistance & Advice

Call us and get honest recommendations and sensible assistance for your precise situation

We show up and do the fuel drain

We can come to you to carry out the full fuel removal & cleanse right there on scene

All done & You Get Going Again

When we have completed you should be able to get back moving and get on with your trip

Wrong Fuel Drain Specialists

We are the leading wrong fuel drain experts in the UK, offering national cover, for Mercedes motorists especially. We mainly attend:

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

We are Mercedes specialists and have successfully drained thousands of Petrol Mercedes vehicles. Regardless of whether it is roadside, on a filling station forecourt, or even at your home, we can get you going again.

The Process

The procedure of draining Diesel from a Petrol car is fundamentally similar for virtually all vehicle makes. Of course it may vary to some degree as each make has their particular different fuel system. Nevertheless it still generally observes the following 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.

Contact Us

In the event that you have any questions or need our help please Call us!
We are able to 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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