Bad fuel in a Mercedes CLK 320? Diesel in your Petrol Mercedes?

We can help!
Call us: 0333 366 0103
Mercedes Fuel Drain


Filling up with Diesel in a Petrol Mercedes is a regularly occurring error. And exactly what you should do about it depends upon a few factors. In the event that you would like to find out what you have to do about it then continue reading.
These are the most crucial variables to be aware of when making a decision whether or not to get it drained:

  1. What amount of Diesel have you put in the Mercedes, considering that the fuel capacity of the Mercedes CLK 320 is usually around 62 litres?
    1. Hardly any Diesel, as little as 3.1 litres of Diesel in a Petrol CLK 320 will typically not really be a big problem. Experience has demonstrated to us that quantities less than 3.1 litres (roughly 5% of the entire fuel tank) is sometimes able to be sufficiently diluted simply by entirely filling the remainder of the tank with Petrol.
      It is rather unusual to encounter a car going through problems due to lower than 5% wrong fuel contamination. Keep in mind it is very uncommon - in no way impossible to encounter. There are actually certain vehicles that won't stand any quantity of fuel contamination at all.
    2. In between 3.1 and 6.2 litres of Diesel in the Mercedes (5 to 10%) is more of a 50/50 scenario. Our experience demonstrates that as many drivers get away with this as those who break down. Any time you are deciding upon whether to risk it and simply fill it up bear in mind that it is just like wagering it all on black - you have got a 50/50 chance of it working.
    3. Anything more than 6.2 litres of Diesel in your Petrol CLK 320 should really immediately be drained out because your likelihood of driving with this quantity of contamination is very likely below one in fifty - genuinely long odds.
  2. Put some Diesel in a Petrol Mercedes and drove it: Have you noticed any performance problems as a result of putting the incorrect fuel in your CLK 320? If you have, get it drained regardless of the amount of Diesel or the contamination ratio. Continuing to run driving a car that is already beginning to suffer from the consequences of fuel contamination will probably just lead to progressively more damage being done to the fuel system components.
  3. Do you need reassurance?
    Then simply just get it drained. Regardless of the contamination percentage, there is inevitably some degree of threat connected to driving a Petrol engine on fuel contaminated with the wrong fuel. Probable results of driving a vehicle on the wrong fuel include the engine refusing to start, running lumpy, lack of power, wearing of the high-pressure pump, worn out or bunged injectors, and so on. These are a few of the most typical Diesel in Petrol warning signs, and should you observe any of them stop and get it drained right away.

Stay away from having any unqualified mechanic to attend your automobile. We are Mercedes experts and have got the certification and expertise necessary to make certain you are back on the road with a minimum of hassle or trouble.

Put Diesel in a Petrol Mercedes

By mistake put Diesel in a Petrol Mercedes? Or possibly even put contaminated fuel in your Mercedes CLK 320?

Call us for Assistance & Guidance

Contact us and receive reliable advice and practical assistance for your exact situation

We arrive and drain it

We can go to you to undertake the complete contaminated fuel drain & clean there on scene

All done & You Get Moving Once 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 top rated wrong fuel drain specialists in the UK, having countrywide service, for Mercedes motorists particularly. We mainly attend:

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

We are Mercedes specialists and have successfully drained hundreds of Petrol Mercedes vehicles. Whether it's at the roadside, on a petrol station forecourt, or even at home, we are able to get you moving again.

The Process

The method of getting rid of Diesel from a Petrol vehicle is basically the same for most vehicles. Needless to say it can vary a bit as each make has their own distinct fuel system. Even so it still observes the following points:

Petrol in Diesel Mercedes

Fuel Drain

Empty the Fuel Tank

View more
Wrong Fuel Drain Mercedes

System Flush

Clean out the fuel lines & pumps

View more
Petrol in Diesel Drain Mercedes

Vehicle Restart

Get the car up and running again

View more


Hours a Day


Days a Week





Our Partners

Just some of the few people we work with to bring you the best petrol in diesel service possible

Diesel in Petrol FAQs

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 queries or want some help please Contact Us!
We can get you moving 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

Important Info

Fully Insured

VAT Registered

APEX Certified


Fully Mobile

Professionally Trained