Incorrect fuel in a Mercedes CLA 220 CDI? Petrol in a Diesel Mercedes?

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Mercedes Fuel Drain


Filling Petrol in a Diesel Mercedes is a regularly occurring error. And exactly what you have to do about it depends upon a few things. Assuming you would like to know what to do about this then please read on.
Listed below are the most important factors to keep in mind when choosing whether to get your car drained:

  1. What level of Petrol have you put in to the Mercedes, taking into consideration that the fuel capacity of the Mercedes CLA 220 CDI is in most cases approximately 50 litres?
    1. A small quantity of Petrol, less than 2.5 litres of Petrol in a Diesel CLA 220 CDI will in most cases not really be a massive problem. Experience has taught us that quantities less than 2.5 litres (approximately 5% of the total fuel tank volume) is quite often capable of being sufficiently diluted by wholly topping the remainder of the tank with Diesel.
      It's very unusual to encounter a vehicle having problems with under 5% wrong fuel contamination. Keep in mind it is uncommon - not impossible to encounter. There are actually some automobiles that don't stand any quantity of contamination whatsoever.
    2. Somewhere between 2.5 and 5 litres of Petrol in the Mercedes (5 to 10%) is a 50/50 scenario. Our working experience has shown that as many motorists get away with this as those who break down. Whenever deciding on whether or not to risk it and simply fill it up bear in mind that it is the same as wagering all of it on black - you have a 50/50 possibility of it being ok.
    3. Anything more than 5 litres of Petrol in a Diesel CLA 220 CDI should right away be drained out because your probability of getting away with that amount of contamination is more than likely less than one in 50 - extremely big odds.
  2. Put some Petrol in a Diesel Mercedes and drove it: Have you detected any kind of performance difficulties after putting the bad fuel in the CLA 220 CDI? If that's the case, get it emptied regardless of the amount of Petrol or the contamination percentage. Proceeding to run driving a car that is already beginning to suffer from the consequences of wrong fuel contamination will probably only cause more damage being caused to your fuel system.
  3. Are you looking for security?
    Then simply just get it removed. Regardless of contamination percentage, there is inevitably a certain level of risk connected with driving a Diesel vehicle on Diesel contaminated with Petrol. Probable final outcomes of driving a car on the wrong fuel can include the motor not starting, running lumpy, decrease in power, degradation of the high-pressure pump, damaged or clogged injectors, and the like. These are several of the most typical Petrol in Diesel signs or symptoms, and if you detect any of them stop driving and have it removed as soon as possible.

Keep away from getting any untrained so-and-so to try to fix your vehicle. We are Mercedes experts and possess the certification and experience needed to ensure you are back on the road with no hassle or trouble.

Put Petrol in a Diesel Mercedes

By mistake put Petrol in a Diesel Mercedes? Or possibly even put contaminated fuel in your Mercedes CLA 220 CDI?

Call us for Assistance & Advice

Give us a call and get straightforward recommendations and practical assistance for your particular situation

We show up and drain it

We can reach you to undertake the full fuel retrieval & purge there on scene

Once carried out You Get Going Again

As soon as we have finished you should be able to get back moving and get on with your day

Wrong Fuel Drain Specialists

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

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

We are Mercedes specialists and have successfully drained hundreds of Diesel Mercedes vehicles. Whether or not it is roadside, on a filling station forecourt, or even at your home, we can get you going again.

The Procedure

The system of removing Petrol from a Diesel vehicle is fundamentally identical for a large number of vehicles. Obviously it does differ slightly as each make has their own different fuel system. Nevertheless it still generally follows 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 our help please Contact 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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