My Passat stalls at least once per trip (usually within the first few miles).
It just shuts off and cannot be started for about 10 seconds, then its ok and does not stall for the rest of the trip. The speedo shuts down when this happens then it resumes when its ok to start car again.
(in other words the speedo drops to 0 for a few seconds then returns to speed when the problem clears itself - I then let out the clutch and resume as if nothing happenned)
Previous owner told me he thinks its related to the fuel pump relay(s)
I changed the fuel filter since I don't know its history (140k miles)