Wrong fuel in your Mercedes S55 AMG? Diesel in a Petrol Mercedes?

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Mercedes Fuel Drain


Filling Diesel in a Petrol Mercedes is a common error. And its remedy depends on several factors. If you want to know what you must do about this then keep on reading.
Here are the most important factors to think about whenever deciding whether to have a fuel drain:

  1. What level of Diesel did you put into the Mercedes, taking into account that the fuel capacity of your Mercedes S55 AMG is probably roughly 88 litres?
    1. Hardly any Diesel, less than 4.4 litres of Diesel in a Petrol S55 AMG will in most situations not be a big problem. Experience has taught us that quantities less than 4.4 litres (which is about 5% of the entire fuel tank capacity) is sometimes capable of being completely diluted simply by entirely filling the rest of the tank with the correct fuel.
      It's quite unusual to find an automobile suffering from problems with below 5% incorrect fuel contamination. Be aware that it is very infrequent - in no way impossible to encounter. You will discover a few vehicles that won't stand any degree of contamination at all.
    2. Between 4.4 and 8.8 litres of Diesel in the Mercedes (5 to 10%) is really a 50/50 situation. Our experience has revealed that as many drivers get away with this as those who break down. Any time you're deciding whether to risk it and just simply top it up bear in mind that it is the same as wagering your car on black - you have a 50/50 chance of it working out.
    3. Anything more than 8.8 litres of Diesel in a Petrol S55 AMG should really as soon as possible be removed since your likelihood of driving with that level of contamination is undoubtedly less than one in 50 - definitely big odds.
  2. Put some Diesel in a Petrol Mercedes and drove it: Have you detected any kind of performance difficulties as a result of putting the incorrect fuel in your S55 AMG? If you have, have it drained no matter the quantity of Diesel or even the contamination ratio. Proceeding to drive driving an automobile that is already beginning to suffer from the effects of wrong fuel contamination can only lead to more harm being caused to the fuel system parts.
  3. Are you interested in assurance?
    Then get it removed. No matter the contamination percentage, there is inevitably some extent of threat resulting from driving a Petrol motor on Petrol contaminated with Diesel. Likely final outcomes of driving a vehicle on the wrong fuel normally include the motor not starting, running unevenly, decrease in power, wearing of the high-pressure pump, damaged or clogged injectors, and the like. These are some of the most frequently seen Diesel in Petrol signs or symptoms, and in the event that you detect any of them stop driving and get it removed asap.

Stay away from getting any unqualified mechanic to attend your car. We are Mercedes specialists and hold the accreditation and expertise needed to ensure that you are back on the road with no hassle or trouble.

Put Diesel in a Petrol Mercedes

Accidentally put Diesel in a Petrol Mercedes? Or perhaps even put contaminated fuel in your Mercedes S55 AMG?

Call us for Assistance & Recommendations

Call us and get straightforward guidance and practical assistance for your specific circumstances

We come out and drain it

We can reach you to carry out the fuel removal & clean right there on scene

Once performed You Get Moving Once again

Once 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 professionals in the UK, boasting countrywide coverage, for Mercedes motorists particularly. We typically attend:

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

We are Mercedes specialists and have successfully drained hundreds of Petrol Mercedes vehicles. No matter if it is at the roadside, on a station forecourt, or even at your home, we can get you on the road once again.

The Procedure

The method of draining Diesel from a Petrol vehicle is basically the same for the vast majority of vehicles. Of course it does differ slightly as each manufacturer has their own distinct fuel system. Having said that it still essentially follows the following points:

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.

Call us

In case you have any concerns or want assistance please Call us!
We can get you going once again.

24/7 Mercedes Helpline

0333 366 0103

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

Weekdays: 9am to 5pm

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