Contaminated fuel in a Mercedes S400 Hybrid? Diesel in your Petrol Mercedes?

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Mercedes Fuel Drain


Filling Diesel in a Petrol Mercedes is a very common error. And exactly what you need to do about it will depend on a variety of factors. If you would like to find out what you have to do to fix it then keep on reading.
Right here are the key variables to take into consideration whenever deciding on whether to get a fuel drain:

  1. How much Diesel have you put into the Mercedes, taking into consideration that the fuel tank capacity of the Mercedes S400 Hybrid is probably roughly 90 litres?
    1. Hardly any Diesel, something like 4.5 litres of Diesel in a Petrol S400 Hybrid will more often than not not be a significant problem. Experience has taught us that quantities under 4.5 litres (5% of the total fuel tank capacity) is quite often able to be sufficiently diluted simply by completely filling the rest of the tank with Petrol.
      It is relatively unusual to encounter a vehicle experiencing problems with less than 5% incorrect fuel contamination. Keep in mind that it is very rare - in no way impossible to find. There are a few automobiles that won't endure any degree of contamination whatsoever.
    2. In between 4.5 and 9 litres of Diesel in the Mercedes (5 to 10%) is really a 50/50 situation. Our experience has shown us that as many people get away with this as all those who don't. Any time you are trying to decide whether or not to risk it and simply fill it up consider that it is much like wagering everything on black - you've got a 50/50 possibility of it working.
    3. Anything more than 9 litres of Diesel in your Petrol S400 Hybrid should straight away be drained out seeing as your likelihood of succeeding with this amount of contamination is very likely below one in fifty - extremely big odds.
  2. Put Diesel in a Petrol Mercedes and drove it: Have you detected any kind of performance troubles after putting the wrong fuel in the S400 Hybrid? If so, get it drained regardless of the amount of Diesel or the contamination ratio. Still running a vehicle that is already starting to suffer from the effects of fuel contamination will probably likely cause more and more harm affecting your fuel system parts.
  3. Do you want peace of mind?
    Simply get it drained. Whatever the contamination ratio, there is inevitably a certain level of danger resulting from driving a Petrol engine on Petrol contaminated with Diesel. Possible outcomes of driving a car on the wrong fuel can include the motor not starting, running lumpy, loss in power, degradation of the high-pressure pump, damaged or clogged injectors, etc. These are several of the commonest Diesel in Petrol symptoms, and in the event that you observe any of them stop and have it drained right away.

Don't just get any jack-of-all-trades to try to drain your automobile. We are Mercedes experts and have got the credentials and experience required to make certain that 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 perhaps even put contaminated fuel in your Mercedes S400 Hybrid?

Call us for Help & Recommendations

Contact us and get genuine recommendations and sensible help for your exact circumstance

We arrive and drain it

We are able to reach you to undertake the complete fuel retrieval & clean right there on scene

All done & You Get Going Again

As soon as we have completed you can get back moving and get on with your trip

Wrong Fuel Drain Specialists

We are the top rated wrong fuel drain specialists in the UK, boasting countrywide service, for Mercedes motorists especially. We principally fix:

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

We are Mercedes specialists and have successfully drained hundreds of Petrol Mercedes vehicles. Regardless of whether it is at the roadside, on a petrol station forecourt, or even at your home, we can get you on the road again.

The Process

The procedure of removing Diesel from a Petrol car is fundamentally identical for the majority of vehicle makes. Obviously it can vary a little as each brand has their particular fuel system. Nevertheless it still adheres to 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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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.

Get in Touch

Should you have any concerns or require our assistance please Call us!
We can get you on the road 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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