Wrong fuel in a Mercedes A170 CDI? Petrol in your Diesel Mercedes?

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Putting Petrol in a Diesel Mercedes is a very common mistake to make. And its solution is based on several factors. In the event that you want to know what to do about it then keep on reading.
Listed below are the most crucial factors to think about when deciding on whether to get a fuel drain:

  1. What level of Petrol did you put in to the Mercedes, taking into consideration that the fuel capacity of your Mercedes A170 CDI is usually roughly 54 litres?
    1. A tiny amount of Petrol, less than 2.7 litres of Petrol in a Diesel A170 CDI will normally not be a huge problem. Experience has proven to us that an amount under 2.7 litres (which is 5% of the entire fuel tank) is quite often capable of being completely diluted by wholly topping the tank with Diesel.
      It is very unusual to come across a car or truck going through issues because of below 5% incorrect fuel contamination. Keep in mind it is very uncommon - definitely not impossible to find. There are actually certain motor vehicles that don't stand any quantity of contamination in the slightest.
    2. Somewhere between 2.7 and 5.4 litres of Petrol in the Mercedes (5 to 10%) is really a 50/50 condition. Our experience has confirmed that as many motorists get away with it as those who don't. When deciding on whether or not to risk it and simply fill it up remember that it is much like betting everything on black - you've got a 50/50 possibility of it being ok.
    3. Anything above 5.4 litres of Petrol in your Diesel A170 CDI must immediately be removed since your probability of driving with that quantity of contamination is almost certainly lower than one in fifty - genuinely huge odds.
  2. Put Petrol in a Diesel Mercedes and drove it: Have you noticed any kind of performance troubles ever since putting the wrong fuel in the A170 CDI? If so, get it drained irrespective of the volume of Petrol or the contamination ratio. Continuing to drive driving a car that is now starting to suffer the effect of wrong fuel contamination will definitely lead to even more damage affecting the fuel system.
  3. Do you need reassurance?
    In that case get it removed. Regardless of the contamination ratio, there is invariably some amount of risk connected to driving a Diesel engine on Diesel contaminated with the incorrect fuel. Possible consequences of driving on the wrong fuel include things like the engine not starting, running unevenly, loss in power, degradation of the high-pressure pump, worn out or clogged injectors, etc. These are some of the commonest Petrol in Diesel signs and symptoms, and should you observe any of them stop driving and have it drained right away.

Do not just get any jack-of-all-trades to attend your car. We are Mercedes experts and hold the skills and working experience necessary to ensure that you get back on the road with minimal hassle or trouble.

Put Petrol in a Diesel Mercedes

Inadvertently put Petrol in a Diesel Mercedes? Or even put contaminated fuel in your Mercedes A170 CDI?

Call us for Help & Recommendations

Call us and receive honest recommendations and practical help for your particular circumstances

We arrive and do a fuel drain

We can come to you to do the complete fuel drain & purge there on scene

Once performed You Get Going Again

As soon as we have finished you will be able to get back moving and get on with your day

Wrong Fuel Drain Specialists

We are the leading wrong fuel drain experts in the UK, boasting countrywide service, for Mercedes motorists particularly. We typically fix:

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

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

The Process

The process of extracting Petrol from a Diesel vehicle is basically the same for the vast majority of vehicles. Of course it can differ a bit as each make has their own distinct fuel system. Having said that it still essentially 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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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

If you have any enquiries or want help please Call us!
We can get you going once again.

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0333 366 0103

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Fuel Fixer Ltd, Linx House, 147 London Road, East Grinstead, RH19 1ET

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