Wrong fuel in a Audi S5? Diesel in a Petrol Audi?

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Audi Fuel Drain


Filling up with Diesel in a Petrol Audi is a regular problem. And its remedy depends on an assortment of factors. In the event that you would like to find out what you need to do to fix it then stay with me.
Listed here the most crucial variables to take into account whenever deciding on whether to have it drained:

  1. What level of Diesel did you put in the Audi, bearing in mind that the fuel capacity of your Audi S5 is probably around 64 litres?
    1. A small amount of Diesel, as little as 3.2 litres of Diesel in a Petrol S5 will normally not necessarily be a huge problem. Experience has proven to us that quantities less than 3.2 litres (close to 5% of the whole fuel tank volume) is very often capable of being sufficiently diluted through entirely topping the remainder of the tank with the right fuel.
      It is pretty uncommon to find a vehicle having issues with lower than 5% incorrect fuel contamination. Bear in mind that it is infrequent - not impossible to encounter. There are actually some motor vehicles that won't endure any amount of contamination whatsoever.
    2. In between 3.2 and 6.4 litres of Diesel in the Audi (from 5 to 10%) is more of a 50/50 condition. Our working experience has shown us that as many people get away with it as those people who don't. When deciding whether to risk it and just simply top it up consider that it is the same as wagering all of it on black - you have a 50/50 chance of it working out.
    3. Anything above 6.4 litres of Diesel in a Petrol S5 should straightaway be drained out seeing that your probability of getting away with this level of contamination is certainly less than one in fifty - truly big odds.
  2. Put Diesel in a Petrol Audi and drove it: Have you seen any performance difficulties after putting the wrong fuel in the S5? In that case, have it removed no matter the quantity of Diesel or the contamination percentage. Still running an automobile that is now beginning to suffer from the consequences of fuel contamination can definitely cause even more harm affecting the fuel system components.
  3. Would you like peace of mind?
    Simply get it drained. Regardless of contamination ratio, there is always some extent of risk caused by operating a Petrol engine on Petrol contaminated with the wrong fuel. Possible consequences of driving a car on the incorrect fuel normally include the engine refusing to start, running unevenly, reduced power, wearing of the high-pressure pump, worn or bunged injectors, and so forth. These are some of the most frequently seen Diesel in Petrol symptoms, and should you observe any of them then stop and have it removed right away.

Do not just have any jack-of-all-trades to attend your automobile. We are Audi experts and possess the skills and experience needed to make sure that you are back on the road with a minimum of hassle or worry.

Put Diesel in a Petrol Audi

Inadvertently put Diesel in a Petrol Audi? Or possibly even put contaminated fuel in your Audi S5?

Contact us for Help & Recommendations

Give us a call and receive reliable advice and sensible assistance for your specific circumstances

We come out and do a fuel drain

We can go to you to do the fuel removal & purge right there on scene

All done & You Get Moving Again

Once we have finished you will be able to get back on your way and get on with your trip

Wrong Fuel Drain Specialists

We are the leading wrong fuel drain authorities in the UK, having national cover, for Audi motorists especially. We primarily attend:

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

We are Audi specialists and have successfully drained hundreds of Petrol Audi vehicles. Regardless of whether it's at the roadside, on a station forecourt, or even at your home, we can get you going once again.

The Procedure

The procedure of extracting Diesel from a Petrol vehicle is essentially similar for most motor vehicles. Obviously it can differ to some extent as every make has their particular fuel system. However it still basically follows the following principles:

Petrol in Diesel Audi

Fuel Drain

Empty the Fuel Tank

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Wrong Fuel Drain Audi

System Flush

Clean out the fuel lines & pumps

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Petrol in Diesel Drain Audi

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.

Contact Us

If you have any concerns or want some assistance please Contact Us!
We can get you moving once again.

24 hour Audi Helpline

0333 366 0103

Our Corporate Office

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


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