Petrol in a Diesel Audi Q3: Already Driven It?
As soon as it is safe, pull over and switch the engine off, and leave it off. Driving on with petrol in a diesel Audi Q3 only carries the petrol further in. It's very rare for lasting harm to result when it is caught early, while it can still be put right where you have pulled up.
Once Petrol in Diesel comes out to wherever your Audi Q3 has stopped, the petrol is cleared from the fuel system and the fuel tank drained. It is on fresh diesel and running when we leave.
Warning signs of petrol in a diesel Q3
You might drive a few miles before noticing anything wrong, because petrol in the tank frequently keeps a diesel Q3 running normally to begin with. With petrol or AdBlue inside the tank, these are the ones people tend to notice:
- the motor lacks power, especially when you ask it to pull
- the idle turns erratic, or it runs roughly
- there is more smoke than normal from the tailpipe
- a warning lamp appears
- it stalls and may not start again
If one of these began after you filled up, check your receipt to find out what was put in.
Wrong fuel in your Audi Q3: what travelling on it does
Wrong fuel in your Audi Q3 remains in your fuel tank until the engine draws it out, and driving is what takes it through your filter, the high-pressure fuel pump and your fuel injectors. As diesel runs through the fuel injectors and your fuel pump it protects them, but petrol thins it, which is why the Q3 spreads the mix deeper into the fuel system the more it's used.
That is the reason to stop as soon as you can and not complete the journey. Usually, a drain and a clean are all a vehicle requires when it's stopped early, because what can do damage is travelling far on fuel that's contaminated.
It makes no difference if you have the Q3 2.0 TDI or any other version of the Q3.
Right where you pulled over
There is no reason to get the Q3 anywhere. The roadside and outside your home are both places we come to, so it does not need restarting or towing.
With the hazard lights on, wait clear of the traffic somewhere safe when the road next to you is busy.
Roughly how far you went, which Q3 it is and where you've stopped are what to mention when you phone 0333 366 0103. It helps too if the badge gives the version, such as the Q3 2.0 TDI quattro.
Fuel drain on your Audi Q3 after it was driven
Compared with a drain at the forecourt, a fuel drain on your Audi Q3 goes one step further after a drive. Draining the tank comes first. After that we open up the lines and rinse them through with the filter, so there is no petrol remaining between your tank and the engine. The fuel system is primed after clean diesel is in, and the motor is started to make sure it runs correctly.
If your engine has been run with AdBlue in a diesel Audi Q3
Rough running, smoke and warning lights are the normal symptoms after you've driven on AdBlue in a diesel Audi Q3, and the car might then stall. Settling to the bottom of the fuel tank, where your fuel pump draws fuel, AdBlue gets into your fuel line fast, and it doesn't burn or lubricate. Its water drying out lets the urea crystallise in your lines and your fuel filter.
AdBlue removal from a diesel Audi Q3
Emptying your tank comes first with AdBlue removal from a diesel Audi Q3 that has been run, and then the crystals are flushed out of your fuel lines and the fuel filter, with your fuel filter replaced if it needs it.
Nothing here means switching off or taking out the AdBlue system. It deals with fluid in the diesel tank, and any dedicated AdBlue tank your Q3 may have is left as it is.
The Audi Q3 fuel tank capacity and the engines
Each version of the Audi Q3 in our data comes with a diesel tank of 64 litres.
The badges on diesel Q3 versions read TDI.
Engine size is 2.0 litres throughout the versions in our list.
There are Quattro versions among them.
| Version | Fuel tank |
|---|---|
| Audi Q3 2.0 TDI | 64 litres |
| Audi Q3 2.0 TDI quattro | 64 litres |
What a fuel drain on the Audi Q3 will cost after a drive
How far it travelled and where it has stopped are what largely settle the cost of a fuel drain on the Audi Q3 after driving, and petrol or AdBlue makes a difference too. We can explain what the job will involve once you call with those details.
Questions after driving with petrol in a diesel Audi Q3
Is my Q3 ruined?
The likelihood of that is very low. We empty and flush your fuel system wherever you've stopped, and when your car has been stopped soon, lasting harm is rare.
Can I drive the car home first?
We would rather you didn't. Every mile on tainted fuel pushes it further through the system, and we're able to drain the Q3 where it sits, which means there's no need to move the car.
Stalled, and it will not restart: what should I do next?
Please leave it instead of having another go, as each attempt draws more of that mixture through. We prime the fuel system and get it started for you once it's been drained and flushed and fresh diesel is in.
Does the version of my Q3 matter?
There are 2 diesel versions of the Q3, and the badge on the tailgate shows which one you have. Knowing that assists us when you ring.
Is wrong fuel in my Audi Q3 covered by my insurance?
Some policies offer misfuelling cover, and so it's worth looking at yours after the car is dealt with. We come out either way.