Been running a B7 3.0 TDI Auto Avant for the last 6 months. It's a great car and is one of the best for being an all rounder.I've had it towing the track car on a trailer across Europe through to a full Ikea bedroom flat packed in the back - just popped the seats down and job done!
No faults to report in that time other than a flickering xenon light (probably balast) and the rear side window heated elements not receiving power.
Fuel economy wise I'm now averaging 36mpg, or 460 miles per 60 litres. Not bad at all.
It's a great engine. Pulls like a train and power on-tap when needed. Paddle shift is quick, too.