I had an Injector go down at '70' mph in the outside lane of the M2 at approx 70,000 miles. It was a scary situation; total loss of power and was forced to barge my way across 2 lanes of unhelpful traffic and fortunately coast up a slip road! 
Our 170 was still in warranty but VW would only give 'good will' to the lease company. It took us 6 hours to finish the last 52 miles of our journey and the GT sat in the local stealers for 5 days while they argued about the cost!!!! 
........................ They only replaced the faulty injector and associated loom.
Apart from that and 4 replacement exhaust sensors it covered 127,000 miles in 41 months faultlessly. 
i feel for you pal, mine went at 1am in the morning during moving the last load when moving house.... was a nightmare, was scary too, everything goes, steering the lot! managed to knock it out of gear and coat to a safe place to pull over.
Didn't expect it of a VAG, my last honda never missed a beat, and vauxhalls for that matter
