Bad fuel in a Audi TT Coupe? Diesel in your Petrol Audi?

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Audi Fuel Drain


Filling Diesel in a Petrol Audi is a common error. And what you should do about it is dependent upon a few things. If perhaps you want to know what you have to do about this then stay with me.
Listed here the main factors to keep in mind whenever determining whether to get a fuel drain:

  1. What level of Diesel did you put in the Audi, keeping in mind that the fuel tank capacity of your Audi TT Coupe is normally approximately 55 litres?
    1. A small quantity of Diesel, as little as 2.75 litres of Diesel in a Petrol TT Coupe will quite often not necessarily be a major problem. Experience has demonstrated to us that anything under 2.75 litres (close to 5% of the total fuel tank volume) is quite often able to be completely diluted by means of completely filling the remainder of the tank with Petrol.
      It's extremely uncommon to find a motor vehicle going through problems with under 5% incorrect fuel contamination. Do not forget that it's uncommon - not impossible to encounter. There are a number of motor vehicles that don't endure any quantity of fuel contamination whatsoever.
    2. Somewhere between 2.75 and 5.5 litres of Diesel in the Audi (from 5 to 10%) is really a 50/50 situation. Our experience has demonstrated that as many motorists get away with this as those people who don't. When you are deciding whether to chance it and basically top it up bear in mind that it is much like betting it all on black - you have a 50/50 possibility of it being ok.
    3. Anything over 5.5 litres of Diesel in your Petrol TT Coupe ought to as soon as possible be removed seeing that your likelihood of succeeding with that level of contamination is probably below one in 50 - really big odds.
  2. Put Diesel in a Petrol Audi and drove it: Have you noted any performance troubles after putting the incorrect fuel in the TT Coupe? If you have, get it emptied no matter the quantity of Diesel or the contamination percentage. Still running an automobile that is already starting to suffer the effect of wrong fuel contamination can typically lead to more and more damage affecting the fuel system components.
  3. Are you interested in security?
    You should get it drained. Regardless of the contamination percentage, there is always a certain level of danger resulting from running a Petrol engine on fuel contaminated with the wrong fuel. Possible consequences of driving a car on the wrong fuel include the engine refusing to start, running lumpy, loss of power, degradation of the high-pressure pump, worn or blocked injectors, and the like. These are some of the commonest Diesel in Petrol warning signs, and in the event that you notice any of them then stop and get it removed immediately.

Don't simply get any untrained so-and-so to try to repair your car. We are Audi specialists and have got the qualifications and experience needed to make certain that you get back on the road with minimum hassle or trouble.

Put Diesel in a Petrol Audi

Unintentionally put Diesel in a Petrol Audi? Or even put contaminated fuel in your Audi TT Coupe?

Call us for Assistance & Advice

Call us and receive genuine guidance and sensible help for your specific circumstance

We come out and drain it

We can go to you to do the full fuel drain & flush there on scene

All done & You Get Moving Again

When we are done you are able to get back on the road and get on with your day

Wrong Fuel Drain Specialists

We are the leading wrong fuel drain specialists in the UK, having countrywide service, for Audi motorists in particular. We primarily fix:

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

We are Audi specialists and have successfully drained thousands of Petrol Audi vehicles. Whether or not it is at the roadside, on a station forecourt, or even at your house, we are able to get you moving once again.

The Procedure

The system of getting rid of Diesel from a Petrol vehicle is in essence exactly the same for the majority of cars. Of course it does vary a bit as every manufacturer has their particular fuel system. However it still essentially adheres to the below 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 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.

Contact Us

Should you have any concerns or want assistance please Call us!
We can get you moving once again.

24/7 Audi 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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