Wrong fuel in a Smart Forfour pulse? Diesel in your Petrol Smart?

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Smart Fuel Drain


Filling Diesel in a Petrol Smart is a regularly occurring problem. And its solution is determined by a number of factors. In case you want to find out what to do about this then keep reading.
Let us discuss the key factors to consider whenever deciding whether or not to have a fuel drain:

  1. What amount of Diesel have you put in the Smart, bearing in mind that the fuel capacity of your Smart Forfour pulse is in most cases about 47 litres?
    1. A modest quantity of Diesel, as little as 2.35 litres of Diesel in a Petrol Forfour pulse will normally not be a massive problem. Experience has shown us that anything less than 2.35 litres (close to 5% of the overall fuel tank capacity) is frequently able to be completely diluted by entirely topping the remainder of the tank with the appropriate fuel.
      It's pretty rare to find a car or truck having difficulties due to less than 5% incorrect fuel contamination. Keep in mind that it's infrequent - definitely not impossible to encounter. There are actually certain motor vehicles that won't stand any level of fuel contamination at all.
    2. Somewhere between 2.35 and 4.7 litres of Diesel in the Smart (5 to 10%) is a 50/50 situation. Our working experience has revealed that as many motorists get away with it as all those who break down. Any time you are deciding whether or not to risk it and just fill it up bear in mind that it is exactly like wagering your car on black - you've got a 50/50 chance of it being ok.
    3. Anything above 4.7 litres of Diesel in a Petrol Forfour pulse must as soon as possible be drained out seeing as your probability of succeeding with that quantity of contamination is certainly lower than one in fifty - seriously big odds.
  2. Put some Diesel in a Petrol Smart and drove it: Have you seen any kind of performance issues since putting the bad fuel in your Forfour pulse? If that's the case, get it drained no matter the quantity of Diesel or even the contamination percentage. Continually running a vehicle that is already starting to suffer from the effect of fuel contamination will likely cause even more harm affecting the fuel system components.
  3. Would you like reassurance?
    Then simply just get it removed. Regardless of contamination ratio, there is inevitably some degree of threat linked with operating a Petrol vehicle on Petrol contaminated with the incorrect fuel. Probable outcomes of driving on the wrong fuel include the motor not starting, running unevenly, loss in power, wearing of the high-pressure pump, worn or clogged injectors, etc. These are a few of the most typical Diesel in Petrol signs and symptoms, and in the event that you observe any of them then stop and have it drained immediately.

Keep away from having any jack-of-all-trades to try to drain your car. We are Smart specialists and hold the skills and working experience required to make certain that you are back on the road with a minimum of hassle or worry.

Put Diesel in a Petrol Smart

Unintentionally put Diesel in a Petrol Smart? Or even put contaminated fuel in your Smart Forfour pulse?

Call us for Help & Advice

Contact us and get sincere guidance and sensible help for your specific circumstance

We arrive and drain it

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

All done & You Get Going Once again

As soon as we are done you are able to get back moving and get on with your day

Wrong Fuel Drain Specialists

We are the top rated wrong fuel drain authorities in the UK, boasting nationwide service, for Smart motorists particularly. We mostly deal with:

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

We are Smart specialists and have successfully drained hundreds of Petrol Smart vehicles. No matter if it is at the roadside, on a petrol station forecourt, or even at your home, we are able to get you going once again.

The Process

The process of draining Diesel from a Petrol vehicle is in essence identical for the majority of motor vehicles. Needless to say it may differ a little as each manufacturer has their own different fuel system. Nevertheless it still essentially observes the below principles:

Petrol in Diesel Smart

Fuel Drain

Empty the Fuel Tank

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Wrong Fuel Drain Smart

System Flush

Clean out the fuel lines & pumps

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Petrol in Diesel Drain Smart

Vehicle Restart

Get the car up and running again

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Diesel in Petrol Questions

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

In the event that you have any questions or require some assistance please Call us!
We are able to get you moving again.

24/7 Smart 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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