Hoping someone can help with some advice?!

2009 VW Passat CC 2.0TDI (CBBB engine)


My partner went to pick-up some shopping, and on the way home she decided to put fuel in the vehicle. Cut a long story short - she accidentally put Shell V Power in the tank (31 L thereof) instead of diesel! Around 300m down the road from the service station after fuelling-up she stopped the car at the side of the road as the engine was noisy/rumbling. The car is parked in that spot on the road now and I confirmed via the service station purchase receipt and smell from the tank with the fuel cap removed, that petrol (Shell V Power) is now mixed with the diesel in the car's fuel tank. She did try and start the car and it wouldn't start, so petrol has obviously gone through the fuel delivery line and injectors.

I picked her up in another vehicle and the car is now parked on the side of the road until I decide what to do (it's a Sunday which doesn't help).

Now, I know that you can access the fuel tank easily in this car (diesel fuel pump hatch under back seat - have pulled it out before). Any thoughts/ideas on what I can/should do, or should I just organise an RACV tow on Monday to a VW mechanic and leave it with them? Any idea roughly on how long/how much to sort it out if the mechanic does the work?

Thanking you in advance!