Wrong fuel in your Mercedes S300 Turbodiesel? Petrol in your Diesel Mercedes?

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


Filling up with Petrol in a Diesel Mercedes is a regular problem. And what you should do about it varies according to various factors. In the event that you would like to know what you need to do to sort it out then stay with me.
These are the most important variables to keep in mind whenever figuring out whether or not to have a fuel drain:

  1. What level of Petrol have you put in the Mercedes, bearing in mind that the fuel tank capacity of the Mercedes S300 Turbodiesel is most likely roughly 100 litres?
    1. A tiny quantity of Petrol, something like 5 litres of Petrol in a Diesel S300 Turbodiesel will quite often not necessarily be a huge problem. Experience has shown us that anything less than 5 litres (about 5% of the fuel tank volume) is usually able to be completely diluted by means of completely filling up the remainder of the tank with Diesel.
      It is quite unusual to encounter an automobile having problems with below 5% wrong fuel contamination. Keep in mind it is very infrequently found - definitely not impossible to encounter. You will discover some vehicles that don't stand any quantity of fuel contamination whatsoever.
    2. Between 5 and 10 litres of Petrol in the Mercedes (from 5 to 10%) is really a 50/50 situation. Our working experience has revealed that as many people get away with it as those who break down. Any time you are deciding on whether or not to risk it and basically top it up recognise that it is exactly like gambling all of it on black - you will have a 50/50 chance of it working.
    3. Anything more than 10 litres of Petrol in a Diesel S300 Turbodiesel really should promptly be drained as your likelihood of getting away with this level of contamination is more than likely below one in 50 - really huge odds.
  2. Put Petrol in a Diesel Mercedes and drove it: Have you spotted any kind of performance problems ever since putting the incorrect fuel in the S300 Turbodiesel? If so, have it emptied regardless of the volume of Petrol or the contamination percentage. Continuing to drive driving a motor vehicle that is starting to suffer the effects of wrong fuel contamination will typically cause even more damage being done to your fuel system parts.
  3. Are you interested in reassurance?
    Simply get it removed. Regardless of contamination ratio, there is invariably some amount of threat linked with running a Diesel vehicle on fuel contaminated with Petrol. Possible results of driving on the wrong fuel can include the engine not starting, running lumpy, loss in power, wearing of the high-pressure pump, worn out or bunged injectors, and so on. These are some of the most frequently seen Petrol in Diesel symptoms, and if you notice any of them then stop driving and get it drained asap.

Refrain from having any untrained so-and-so to attend your automobile. We are Mercedes experts and possess the credentials and working experience needed to make certain you are back on the road with no hassle or worry.

Put Petrol in a Diesel Mercedes

Mistakenly put Petrol in a Diesel Mercedes? Or possibly even put contaminated fuel in your Mercedes S300 Turbodiesel?

Call us for Help & Recommendations

Give us a call and receive sincere advice and sensible assistance for your precise situation

We come out and drain it

We can come to you to perform the complete contaminated fuel drain & flush there on scene

Once completed You Get Going Again

When we are done you will be able to get back on your way and get on with your trip

Wrong Fuel Drain Specialists

We are the primary wrong fuel drain experts in the UK, having nationwide coverage, for Mercedes motorists particularly. We typically attend to:

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

We are Mercedes specialists and have successfully drained thousands of Diesel Mercedes vehicles. Whether or not it is at the roadside, on a petrol station forecourt, or even at your home, we can get you moving again.

The Process

The process of extracting Petrol from a Diesel vehicle is generally identical for virtually all motor vehicles. As you can imagine it does differ to some degree as every manufacturer has their own distinct fuel system. Even so it still adheres to 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

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.

Call us

In case you have any concerns or require some help please Call us!
We are able to 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

Important Info

Fully Insured

VAT Registered

APEX Certified


Fully Mobile

Professionally Trained