I had a 'mare with my Skoda. 170bhp CR engine. Whilst I was made up with the car itself, the way it drove, the economy and performance, the thing let itself down by popping various sensors. Throttle sensor then the exhaust sensor,then the secondary water pump sensor.
All this happened within a period of two months. Needless to say, we parted company. Shame as it really was a nice motor but it is without doubt the most unreliable car I have ever owned made even more annoying by the triviality of the things that actually let it down.
In the last two months of ownership it went to the dealer three times for four problems and was seen by no less then six breakdown men, all I'd whom said the Octavia was a reliable car.
I had to beg to differ and wouldn't now consider owning another VW / Audi group car.
Edit, all this happened before it hit 50,000 miles and I had owned it since it had done 400 miles. It was approaching 2 and a half years old when I sold it.