Mine vw passat 2.0 170 tdi 2008 have a problem. On highway sometimes it shuts off, and before that i feel some hesitation. Code was first time only 1 cylinder misfire, second time 2,4 cylinder and so on.. I get different codes every time.
After it shuts off i must stand still and shift into park, out and in with key and it restarts fine and i can drive off again with no truble for a mile or several miles sometimes.
I have change fuel filter only.