Throttle body failure is not uncommon and can lead to shifting issues with the automatic transmission and other drivability concerns.
Car Problem Reports
Volkswagen Jetta Shifting/Drivability Issues Due to Throttle Body Failure
Volkswagen Jetta Problem
Engines Affected: 2.0L 4 Cylinder, 2.5L 5 Cylinder
Average Mileage: 160,000 mi (98,000 mi - 222,000 mi)
Visitor, 2005 Volkswagen Jetta, 2.5L 5 Cylinder, 98,000 mi
Car has very weak starts when cold. When I press on the gas peddle, it feels like there is no pick up. Car is currently in shop waiting for new throttle body part. Expensive repair once again.