Incorrect fuel in a Audi A8 TDI Quattro? Petrol in your Diesel Audi?

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Audi Fuel Drain


Putting Petrol in a Diesel Audi is a well-known problem. And its remedy will depend on a number of things. In the event that you would like to find out what it is advisable to do to sort it out then please read on.
These are the most important factors to to consider whenever determining whether or not to get a fuel drain:

  1. What level of Petrol did you put in to the Audi, taking into consideration that the fuel tank capacity of your Audi A8 TDI Quattro is in most cases around 90 litres?
    1. A tiny amount of Petrol, something like 4.5 litres of Petrol in a Diesel A8 TDI Quattro will most of the time not necessarily be a significant problem. Experience has shown us that quantities less than 4.5 litres (about 5% of the whole fuel tank volume) is in many instances able to be sufficiently diluted by means of thoroughly topping up the tank with the appropriate fuel.
      It's quite unusual to come across a motor vehicle experiencing issues due to lower than 5% wrong fuel contamination. Please remember it is infrequently found - certainly not impossible to find. You will discover some vehicles that won't endure any amount of contamination in the slightest.
    2. In between 4.5 and 9 litres of Petrol in the Audi (from 5 to 10%) is more of a 50/50 situation. Our expertise has shown that as many drivers get away with this as those who don't. Whenever deciding on whether or not to chance it and simply fill it up consider that it is much like betting all of it on black - you've got a 50/50 possibility of it being ok.
    3. Anything over 9 litres of Petrol in your Diesel A8 TDI Quattro ought to immediately be removed since your probability of succeeding with this quantity of contamination is in all likelihood lower than one in fifty - really long odds.
  2. Put Petrol in a Diesel Audi and drove it: Have you observed any performance problems after putting the wrong fuel in the A8 TDI Quattro? In that case, get it drained no matter the amount of Petrol or the contamination ratio. Still running an automobile that is beginning to suffer the effects of fuel contamination will probably only cause even more harm affecting your fuel system.
  3. Are you interested in assurance?
    Then simply just get it removed. Regardless of the contamination ratio, there is invariably a certain level of danger connected to operating a Diesel motor on Diesel contaminated with Petrol. Possible final outcomes of driving on the wrong fuel include things like the motor refusing to start, running unevenly, decrease in power, wearing of the high-pressure pump, worn or clogged injectors, and so on. These are several of the most typical Petrol in Diesel warning signs, and should you detect any of them then cease driving and get it removed right away.

Keep away from getting any unqualified mechanic to attend your automobile. We are Audi experts and have the qualifications and practical experience required to ensure that you are back on the road with minimal hassle or worry.

Put Petrol in a Diesel Audi

Accidentally put Petrol in a Diesel Audi? Or perhaps even put contaminated fuel in your Audi A8 TDI Quattro?

Call us for Help & Recommendations

Contact us and obtain genuine advice and practical assistance for your particular situation

We come out and drain it

We would go to you to perform the complete fuel drain & purge there on scene

All done & You Get Going Again

Once we have finished you can get back moving and get on with your day

Wrong Fuel Drain Specialists

We are the leading wrong fuel drain authorities in the UK, offering countrywide coverage, for Audi motorists in particular. We primarily fix:

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

We are Audi specialists and have successfully drained thousands of Diesel Audi vehicles. Even if it is roadside, on a filling station forecourt, or even at home, we can get you moving again.

The Procedure

The technique of getting rid of Petrol from a Diesel car is in essence the same for the vast majority of vehicle makes. Naturally it may vary a bit as each brand has their unique distinct fuel system. Nevertheless it still adheres to the following guidelines:

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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Petrol in Diesel FAQs

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.

Call us

In the event that you have any questions or need our help please Contact Us!
We are able to get you on the road again.

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0333 366 0103

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

Weekdays: 9am to 5pm

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