One problem related to other fuel system tank assembly has been reported for the 2013 Audi Allroad. The most recently reported issues are listed below.
See Audi technical service bulletin # 2043758/8. Audi is aware of the issue and has a fix, but has not issues a recall. Please see attached diagnostic paperwork fuel can vaporize in the tank resulting in low fuel pressure and delivery rate. The safety concern is that this could potentially cause a fuel cut which could cause the car to suddenly lose power and rapidly decrease in speed. Since the brake lights would not engage in this scenario, a driver behind the affected vehicle may not realize what is happening; unable to stop in time, the following vehicle may collide with the affected vehicle. Affected vehicle will likely have a check engine light symptom. This is what caught my attention leading to obtaining a dealership diagnosis. *note, I have not personally experienced a fuel cut yet, but I first got an engine light in cold weather and have not experienced a warm environment where the fuel has vaporized enough to cause a fuel cut. There are individuals in online forums who have experienced fuel cuts with the 2. 0t gas engine in this vehicle.