Contaminated fuel in your Audi Q3 TDI? Petrol in a Diesel Audi?

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Audi Fuel Drain


Putting Petrol in a Diesel Audi is a well-known mistake. And what you should do about it depends upon several different factors. If you would like to know what you must do about it then stay with me.
Here are the most crucial variables to take into consideration when making a decision whether or not to have a fuel drain:

  1. How much Petrol did you put in the Audi, bearing in mind that the fuel tank capacity of the Audi Q3 TDI is most likely approximately 64 litres?
    1. A small amount of Petrol, something like 3.2 litres of Petrol in a Diesel Q3 TDI will more often than not not necessarily be a massive problem. Experience has shown us that quantities under 3.2 litres (which is 5% of the overall fuel tank capacity) is in many instances able to be completely diluted simply by thoroughly filling the tank with the right fuel.
      It is highly uncommon to find a car going through issues because of below 5% incorrect fuel contamination. Keep in mind that it is very rare - definitely not impossible to find. You can get a number of automobiles that won't endure any amount of fuel contamination in the slightest.
    2. Somewhere between 3.2 and 6.4 litres of Petrol in the Audi (from 5 to 10%) is more of a 50/50 situation. Our practical experience has demonstrated that as many drivers get away with this as all those who break down. When figuring out whether or not to chance it and basically top it up consider that it is just like betting it all on black - you have got a 50/50 chance of it being ok.
    3. Anything over 6.4 litres of Petrol in your Diesel Q3 TDI must straightaway be drained out seeing as your likelihood of driving with that quantity of contamination is in all likelihood less than one in fifty - seriously huge odds.
  2. Put Petrol in a Diesel Audi and drove it: Have you noticed any performance problems since putting the bad fuel in the Q3 TDI? If so, get it emptied no matter the amount of Petrol or even the contamination ratio. Proceeding to run driving an automobile that is currently beginning to suffer the consequences of fuel contamination will probably definitely lead to even more harm affecting your fuel system components.
  3. Are you looking for assurance?
    In that case get it emptied. Regardless of the contamination ratio, there is inevitably some amount of danger caused by driving a Diesel motor on Diesel contaminated with Petrol. Likely implications of driving a car on the wrong fuel can include the motor refusing to start, running unevenly, reduced power, degradation of the high-pressure pump, damaged or clogged injectors, and so on. These are a few of the most typical Petrol in Diesel symptoms, and in the event that you observe any of them then stop and get it drained as soon as possible.

Don't simply have any unqualified mechanic to attend your vehicle. We are Audi experts and hold the certification and experience needed to make sure that you get back on the road with minimal hassle or worry.

Put Petrol in a Diesel Audi

Unintentionally put Petrol in a Diesel Audi? Or even put contaminated fuel in your Audi Q3 TDI?

Give us a call for Assistance & Recommendations

Contact us and obtain genuine recommendations and sensible help for your particular circumstances

We come out and drain it

We are able to come to you to carry out the full fuel retrieval & purge right there on scene

Once done You Get Moving Again

When we have completed you will be able to get back on the road and get on with your day

Wrong Fuel Drain Specialists

We are the top rated wrong fuel drain specialists in the UK, boasting countrywide service, for Audi motorists in particular. We mostly attend:

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

We are Audi specialists and have successfully drained thousands of Diesel Audi vehicles. No matter if it is roadside, on a station forecourt, or even at your house, we are able to get you moving again.

The Procedure

The system of draining Petrol from a Diesel vehicle is fundamentally similar for a large number of vehicle makes. As you can imagine it does vary somewhat as each manufacturer has their particular distinct fuel system. Having said that it still basically observes 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 Questions

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.

Contact Us

If you have any questions or want some help please Contact Us!
We can get you on the road once 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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