Wrong fuel in your Mercedes A150? Diesel in a Petrol Mercedes?

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Mercedes Fuel Drain


Filling up with Diesel in a Petrol Mercedes is a well-known mistake to make. And exactly what you want to do about it hinges on several things. Assuming you want to find out what you ought to do about it then keep on reading.
Listed below are the main factors to think about whenever determining whether or not to get a fuel drain:

  1. What amount of Diesel have you put in to the Mercedes, keeping in mind that the fuel capacity of the Mercedes A150 is normally around 54 litres?
    1. A modest amount of Diesel, as little as 2.7 litres of Diesel in a Petrol A150 will quite often not be a massive problem. Experience has taught us that an amount less than 2.7 litres (which is close to 5% of the overall fuel tank capacity) is very often able to be sufficiently diluted simply by wholly filling up the tank with the appropriate fuel.
      It's quite unusual to encounter a vehicle going through problems because of lower than 5% incorrect fuel contamination. Keep in mind that it's uncommon - in no way impossible to encounter. There are actually some motor vehicles that won't endure any quantity of fuel contamination at all.
    2. In between 2.7 and 5.4 litres of Diesel in the Mercedes (from 5 to 10%) is more of a 50/50 condition. Our expertise has confirmed that as many drivers get away with this as those who break down. Whenever you are deciding upon whether or not to risk it and just simply fill it up bear in mind that it is very much like gambling all of it on black - you have a 50/50 chance of it working out.
    3. Anything over 5.4 litres of Diesel in a Petrol A150 really should straight away be drained because your probability of succeeding with that level of contamination is undoubtedly lower than one in fifty - truly long odds.
  2. Put Diesel in a Petrol Mercedes and drove it: Have you noted any performance difficulties as a result of putting the wrong fuel in your A150? If you have, have it removed no matter the volume of Diesel or even the contamination ratio. Proceeding to drive driving a car that is now starting to suffer the effect of fuel contamination can definitely end up in even more damage being caused to your fuel system parts.
  3. Would you like reassurance?
    In that case get it emptied. Regardless of the contamination percentage, there is invariably a certain level of threat in connection with operating a Petrol motor on Petrol contaminated with Diesel. Likely results of driving on the wrong fuel include things like the engine not starting, running unevenly, lack of power, degradation of the high-pressure pump, worn out or bunged injectors, etc. These are a few of the most frequently seen Diesel in Petrol warning signs, and in the event that you observe any of them cease driving and have it removed right now.

Don't just get any general so-and-so to try to repair your automobile. We are Mercedes experts and possess the credentials and practical experience needed to make certain you get back on the road with minimum hassle or trouble.

Put Diesel in a Petrol Mercedes

Accidentally put Diesel in a Petrol Mercedes? Or even put contaminated fuel in your Mercedes A150?

Give us a call for Assistance & Guidance

Call us and obtain honest advice and practical help for your specific circumstance

We show up and do the fuel drain

We can go to you to do the full contaminated fuel drain & flush 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 authorities in the UK, having nationwide service, for Mercedes motorists particularly. We predominantly fix:

  • Unleaded petrol in your Diesel Car
  • Diesel in your Unleaded Petrol Car
  • AdBlue contamination
  • Water contamination

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

The Procedure

The procedure of extracting Diesel from a Petrol vehicle is basically identical for the vast majority of vehicle makes. Needless to say it can vary a bit as every brand has their unique different fuel system. Nevertheless 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.

Get in Touch

Should you have any queries or want assistance please Call us!
We can get you on the road again.

24/7 Mercedes Helpline

0333 366 0103

Our Corporate Office

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


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