Contaminated fuel in a Mercedes CLA 180? Diesel in your Petrol Mercedes?

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Mercedes Fuel Drain


Filling Diesel in a Petrol Mercedes is a well-known mistake. And its solution varies according to a few factors. If perhaps you would like to find out what it is best to do to sort it out then continue reading.
Let us discuss the most crucial variables to keep in mind whenever determining whether or not to have it drained:

  1. Exactly how much Diesel did you put in to the Mercedes, considering that the fuel tank capacity of your Mercedes CLA 180 is normally around 50 litres?
    1. A small amount of Diesel, as little as 2.5 litres of Diesel in a Petrol CLA 180 will generally not really be a major problem. Experience has shown us that an amount under 2.5 litres (almost 5% of the entire fuel tank volume) is frequently able to be adequately diluted by completely filling up the rest of the tank with Petrol.
      It's quite uncommon to come across a motor vehicle going through issues because of less than 5% incorrect fuel contamination. Bear in mind that it is unusual - definitely not impossible to find. You will discover a number of motor vehicles that will not stand any quantity of fuel contamination in the slightest.
    2. Anywhere between 2.5 and 5 litres of Diesel in the Mercedes (from 5 to 10%) is a 50/50 scenario. Our working experience has shown us that as many people get away with this as those people who break down. Whenever you are figuring out whether to risk it and just top it up bear in mind that it is the same thing as betting it all on black - you've got a 50/50 chance of it working out.
    3. Anything more than 5 litres of Diesel in your Petrol CLA 180 must straight away be removed seeing that your probability of getting away with this level of contamination is very likely below one in fifty - truly long odds.
  2. Put Diesel in a Petrol Mercedes and drove it: Have you spotted any performance difficulties since putting the incorrect fuel in your CLA 180? If you have, have it drained regardless of the quantity of Diesel or even the contamination ratio. Continually driving a vehicle that is currently starting to suffer from the consequences of wrong fuel contamination will just lead to more and more damage being caused to your fuel system parts.
  3. Are you looking for assurance?
    In that case get it removed. Regardless of the contamination percentage, there is invariably some degree of risk in connection with driving a Petrol vehicle on fuel contaminated with Diesel. Probable implications of driving on the incorrect fuel normally include the motor not starting, running lumpy, reduced power, wearing of the high-pressure pump, worn out or blocked injectors, etc. These are a few of the most typical Diesel in Petrol warning signs, and in the event that you detect any of them then cease driving and get it drained immediately.

Don't just have any unqualified mechanic to attend your vehicle. We are Mercedes specialists and have got the certification and working experience necessary to make sure that you are back on the road with minimal hassle or trouble.

Put Diesel in a Petrol Mercedes

Mistakenly put Diesel in a Petrol Mercedes? Or possibly even put contaminated fuel in your Mercedes CLA 180?

Give us a call for Help & Advice

Give us a call and receive genuine advice and sensible help for your particular circumstance

We arrive and drain it

We are able to go to you to carry out the complete fuel retrieval & purge there on scene

All done & You Get Going Again

When we are done you should be able to get back on the road and get on with your day

Wrong Fuel Drain Specialists

We are the leading wrong fuel drain professionals in the UK, boasting countrywide service, for Mercedes motorists in particular. We typically attend:

  • Unleaded petrol in Diesel Auto
  • Diesel in Unleaded Petrol Auto
  • AdBlue contamination
  • Water contamination

We are Mercedes specialists and have successfully drained hundreds of Petrol Mercedes vehicles. Even if it is roadside, on a filling station forecourt, or even at your home, we are able to get you on the road once again.

The Process

The technique of removing Diesel from a Petrol vehicle is fundamentally similar for most cars. As you can imagine it can vary to some extent as every brand has their particular distinct fuel system. However it still essentially adheres to 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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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 the event that you have any concerns or want our assistance please Contact Us!
We are able to get you going once again.

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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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