Incorrect fuel in your Mercedes CLS 500? Diesel in your 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 its remedy hinges on various things. If you would like to know what you must do about it then continue reading.
Let us discuss the most important factors to consider when figuring out whether or not to have a fuel drain:

  1. What amount of Diesel have you put in to the Mercedes, considering that the fuel capacity of the Mercedes CLS 500 is in most cases approximately 80 litres?
    1. A modest quantity of Diesel, less than 4 litres of Diesel in a Petrol CLS 500 will in most cases not really be a big problem. Experience has demonstrated to us that quantities under 4 litres (which is almost 5% of the entire fuel tank capacity) is generally able to be adequately diluted by means of totally topping the remainder of the tank with the right fuel.
      It's quite uncommon to come across an automobile going through difficulties with under 5% wrong fuel contamination. Please remember it is infrequently found - in no way impossible to find. There are actually a few automobiles that won't stand any level of contamination at all.
    2. Anywhere between 4 and 8 litres of Diesel in the Mercedes (from 5 to 10%) is more of a 50/50 scenario. Our expertise has demonstrated that as many drivers get away with this as all those who break down. Any time you're figuring out whether or not to risk it and basically top it up remember that it is the same thing as betting it all on black - you have got a 50/50 possibility of it working.
    3. Anything over 8 litres of Diesel in a Petrol CLS 500 should really as soon as possible be drained as your likelihood of driving with that quantity of contamination is undoubtedly lower than one in 50 - seriously long odds.
  2. Put Diesel in a Petrol Mercedes and drove it: Have you seen any performance concerns ever since putting the bad fuel in your CLS 500? If that's the case, have it emptied no matter the volume of Diesel or the contamination percentage. Continually driving a vehicle that is currently beginning to suffer the consequences of fuel contamination will likely result in more and more harm affecting your fuel system components.
  3. Do you want reassurance?
    Simply get it drained. No matter the contamination percentage, there is invariably a certain level of danger connected with driving a Petrol vehicle on fuel contaminated with the incorrect fuel. Probable implications of driving on the incorrect fuel normally include the motor not starting, running lumpy, lack of power, degradation of the high-pressure pump, worn or clogged injectors, and the like. These are a few of the commonest Diesel in Petrol warning signs, and if you recognise any of them stop and get it drained right now.

Don't just get any untrained so-and-so to attend your automobile. We are Mercedes experts and have the credentials and expertise necessary to make certain you are back on the road with no hassle or worry.

Put Diesel in a Petrol Mercedes

By mistake put Diesel in a Petrol Mercedes? Or even put contaminated fuel in your Mercedes CLS 500?

Call us for Help & Guidance

Give us a call and receive genuine advice and practical help for your specific circumstance

We show up and drain it

We would reach you to undertake the fuel drain & cleanse right there on scene

Once completed You Get Going Again

Once we are done you can get back moving and get on with your day

Wrong Fuel Drain Specialists

We are the top rated wrong fuel drain experts in the UK, offering nationwide cover, for Mercedes motorists especially. We primarily attend:

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

We are Mercedes specialists and have successfully drained hundreds of Petrol Mercedes vehicles. Whether or not it's at the roadside, on a petrol station forecourt, or even at your home, we are able to get you on the road again.

The Procedure

The system of removing Diesel from a Petrol car is in essence identical for most vehicle makes. Obviously it may vary to some degree as every brand has their particular fuel system. However it still generally observes 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.

Contact Us

Should you have any concerns or require some assistance please Call us!
We can get you going once again.

24/7 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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