Wrong fuel in your Mercedes G300 Diesel Cabrio? Petrol in your Diesel Mercedes?

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Mercedes Fuel Drain


Filling up with Petrol in a Diesel Mercedes is a fairly typical mistake to make. And exactly what you want to do about it depends upon a variety of factors. If you want to know what you should do about this then keep on reading.
Let us discuss the most important variables to be aware of whenever deciding whether to get it drained:

  1. What amount of Petrol have you put into the Mercedes, taking into consideration that the fuel tank capacity of the Mercedes G300 Diesel Cabrio is probably around 95 litres?
    1. A modest amount of Petrol, less than 4.75 litres of Petrol in a Diesel G300 Diesel Cabrio will most of the time not necessarily be a big problem. Experience has demonstrated to us that an amount under 4.75 litres (which is almost 5% of the whole fuel tank capacity) is often able to be completely diluted by means of completely topping up the tank with Diesel.
      It is highly uncommon to encounter a car or truck experiencing issues with below 5% wrong fuel contamination. Keep in mind it is rare - not impossible to find. You will discover a few cars that will not endure any amount of contamination in the slightest.
    2. In between 4.75 and 9.5 litres of Petrol in the Mercedes (5 to 10%) is really a 50/50 scenario. Our practical experience has confirmed that as many drivers get away with it as those who don't. Any time you are deciding upon whether or not to chance it and just simply top it up recognise that it is very much like betting your car on black - you will have a 50/50 possibility of it working.
    3. Anything above 9.5 litres of Petrol in a Diesel G300 Diesel Cabrio must straightaway be drained out seeing as your likelihood of driving with that amount of contamination is almost certainly below one in 50 - extremely big odds.
  2. Put Petrol in a Diesel Mercedes and drove it: Have you detected any performance problems as a result of putting the incorrect fuel in your G300 Diesel Cabrio? If you have, get it removed no matter the amount of Petrol or even the contamination percentage. Continuing to drive running an automobile that is now beginning to suffer the effects of wrong fuel contamination will likely result in progressively more harm affecting the fuel system components.
  3. Do you need security?
    In that case get it drained. Regardless of the contamination ratio, there is invariably some extent of danger connected to running a Diesel motor on fuel contaminated with the incorrect fuel. Possible final outcomes of driving a vehicle on the incorrect fuel can include the motor refusing to start, running unevenly, loss of power, wearing of the high-pressure pump, worn out or bunged injectors, etc. These are some of the most frequently seen Petrol in Diesel warning signs, and in the event that you observe any of them stop and have it removed asap.

Refrain from having any jack-of-all-trades to try to repair your vehicle. We are Mercedes specialists and hold the credentials and knowledge required to make sure that you are back on the road with no hassle or worry.

Put Petrol in a Diesel Mercedes

Accidentally put Petrol in a Diesel Mercedes? Or even put contaminated fuel in your Mercedes G300 Diesel Cabrio?

Contact us for Help & Guidance

Call us and obtain reliable guidance and practical help for your particular situation

We come out and drain it

We can reach you to undertake the contaminated fuel drain & clean right there on scene

All done & You Get Going Once again

As soon as we have completed you are able to get back on the road and get on with your day

Wrong Fuel Drain Specialists

We are the leading wrong fuel drain experts in the UK, offering national service, for Mercedes motorists particularly. We principally deal with:

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

We are Mercedes specialists and have successfully drained hundreds of Diesel Mercedes vehicles. No matter if it is roadside, on a station forecourt, or even at your house, we are able to get you on the road again.

The Procedure

The technique of draining Petrol from a Diesel car is basically the same for a large number of motor vehicles. Obviously it can vary to some degree as every manufacturer has their own distinct fuel system. However it still follows the following principles:

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 Questions

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.

Contact Us

In the event that you have any questions or require our help please Contact Us!
We can get you on the road once 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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