Wrong fuel in your Audi Q7 Quattro? Diesel in a Petrol Audi?

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Audi Fuel Drain


Putting Diesel in a Petrol Audi is a regular problem. And what you need to do about it is based on various factors. If perhaps you would like to find out what you should do to fix it then read on.
Here are the key variables to think about when deciding whether or not to get the car drained:

  1. Exactly how much Diesel did you put in the Audi, taking into account that the fuel tank capacity of the Audi Q7 Quattro is most likely around 100 litres?
    1. A tiny quantity of Diesel, less than 5 litres of Diesel in a Petrol Q7 Quattro will generally not really be a significant problem. Experience has shown us that quantities less than 5 litres (about 5% of the entire fuel tank) is very often able to be completely diluted by means of wholly topping up the rest of the tank with Petrol.
      It's extremely rare to find a car having issues because of below 5% incorrect fuel contamination. Remember that it's rare - in no way impossible to find. You will discover a few cars that don't stand any degree of fuel contamination at all.
    2. Somewhere between 5 and 10 litres of Diesel in the Audi (5 to 10%) is more of a 50/50 situation. Our practical experience has shown that as many drivers get away with this as those people who don't. Whenever figuring out whether or not to chance it and just top it up recognise that it is exactly like gambling it all on black - you will have a 50/50 possibility of it working out.
    3. Anything more than 10 litres of Diesel in your Petrol Q7 Quattro ought to promptly be removed because your likelihood of getting away with that quantity of contamination is more than likely below one in fifty - definitely huge odds.
  2. Put some Diesel in a Petrol Audi and drove it: Have you spotted any performance problems ever since putting the bad fuel in the Q7 Quattro? If you have, get it removed no matter the amount of Diesel or the contamination percentage. Continually running an automobile that is already beginning to suffer the effects of wrong fuel contamination can typically bring about increasing amounts of harm affecting your fuel system parts.
  3. Are you interested in assurance?
    Then get it removed. Regardless of contamination percentage, there is inevitably some amount of risk associated with operating a Petrol vehicle on Petrol contaminated with Diesel. Likely final outcomes of driving on the wrong fuel include the motor refusing to start, running lumpy, loss in power, wearing of the high-pressure pump, damaged or clogged injectors, etc. These are several of the most common Diesel in Petrol symptoms, and in the event that you detect any of them stop and get it removed right now.

Avoid getting any unqualified mechanic to attend your automobile. We are Audi experts and have got the qualifications and working experience required to make certain you are back on the road with minimal hassle or worry.

Put Diesel in a Petrol Audi

Accidentally put Diesel in a Petrol Audi? Or even put contaminated fuel in your Audi Q7 Quattro?

Call us for Assistance & Recommendations

Call us and get honest recommendations and sensible assistance for your precise circumstance

We show up and do the fuel drain

We would go to you to undertake the fuel removal & flush right there on scene

All done & You Get Going 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 primary wrong fuel drain specialists in the UK, having national coverage, for Audi motorists especially. We primarily deal with:

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

We are Audi specialists and have successfully drained hundreds of Petrol Audi vehicles. Whether or not it's roadside, on a filling station forecourt, or even at your home, we are able to get you moving once again.

The Procedure

The process of removing Diesel from a Petrol vehicle is generally identical for a large number of vehicles. Of course it does differ slightly as each brand has their particular distinct fuel system. Having said that it still basically adheres to the below 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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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 questions or require help please Contact Us!
We are able to get you going again.

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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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