Bad fuel in your Mercedes ML 350 CDI? Petrol in a Diesel Mercedes?

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Mercedes Fuel Drain


Putting Petrol in a Diesel Mercedes is a fairly typical error. And its remedy varies according to a few things. If perhaps you would like to know what it is best to do to sort it out then continue reading.
Listed here are the most crucial factors to keep in mind whenever making a decision whether to get your car drained:

  1. How much Petrol have you put in the Mercedes, considering that the fuel tank capacity of your Mercedes ML 350 CDI is usually around 95 litres?
    1. A tiny quantity of Petrol, something like 4.75 litres of Petrol in a Diesel ML 350 CDI will usually not necessarily be a massive problem. Experience has shown us that quantities less than 4.75 litres (which is almost 5% of the entire fuel tank) is often capable of being sufficiently diluted through completely filling up the remainder of the tank with the correct fuel.
      It is extremely uncommon to come across a car suffering from issues because of less than 5% wrong fuel contamination. Be aware that it's infrequently found - not impossible to find. You can get some automobiles that won't endure any degree of fuel contamination in the slightest.
    2. In between 4.75 and 9.5 litres of Petrol in the Mercedes (from 5 to 10%) is more of a 50/50 scenario. Our working experience has proven that as many motorists get away with it as all those who break down. Any time you are deciding upon whether or not to risk it and simply top it up recognise that it is the same as gambling your car on black - you have got a 50/50 chance of it working.
    3. Anything above 9.5 litres of Petrol in your Diesel ML 350 CDI must right away be removed seeing as your probability of succeeding with that quantity of contamination is almost certainly below one in fifty - truly huge odds.
  2. Put some Petrol in a Diesel Mercedes and drove it: Have you seen any performance concerns ever since putting the wrong fuel in your ML 350 CDI? If that's the case, have it drained regardless of the quantity of Petrol or even the contamination percentage. Still driving a vehicle that is currently beginning to suffer from the effects of fuel contamination will probably only cause progressively more harm being done to the fuel system parts.
  3. Would you like assurance?
    Simply get it drained. Whatever the contamination percentage, there is invariably some extent of threat linked with running a Diesel engine on fuel contaminated with Petrol. Possible final outcomes of driving a car on the incorrect fuel include the motor refusing to start, running lumpy, reduced power, wearing of the high-pressure pump, damaged or bunged injectors, and so on. These are several of the most frequently seen Petrol in Diesel signs and symptoms, and should you notice any of them then stop and get it drained right now.

Steer clear of having any unqualified so-and-so to attend your vehicle. We are Mercedes specialists and hold the qualifications and practical experience necessary to ensure you are back on the road with little hassle or worry.

Put Petrol in a Diesel Mercedes

By mistake put Petrol in a Diesel Mercedes? Or possibly even put contaminated fuel in your Mercedes ML 350 CDI?

Give us a call for Help & Guidance

Give us a call and obtain reliable recommendations and sensible help for your specific circumstance

We come out and drain it

We would come to you to undertake the complete fuel drain & clean there on scene

Once carried out You Get Moving Once again

Once we have finished you can get back on the road and get on with your day

Wrong Fuel Drain Specialists

We are the top rated wrong fuel drain experts in the UK, boasting countrywide service, for Mercedes motorists in particular. We mostly attend to:

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

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

The Process

The method of removing Petrol from a Diesel car is in essence the same for most vehicles. Of course it can vary slightly as each manufacturer has their particular distinct fuel system. Even so it still fundamentally observes the below guidelines:

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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Petrol in Diesel FAQs

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 the event that you have any questions or require some help please Call us!
We are able to get you moving once 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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