One problem related to transmission gear indicator has been reported for the 2008 Volkswagen Jetta. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2008 Volkswagen Jetta based on all problems reported for the 2008 Jetta.
The gear selector indicator display on the dash is flashing and the car is doing its own thing changing gears. It will not properly accelerate causing a major safety issue anywhere but especially on the highway. The car was properly accelerating on the highway before the display starting flashing and the car downshifted (into either 3rd or 4th) and refuses to upshift again. I think this is related to a mechatronic unit failure in the 2009-2010 recalls.