Reverse gear failures and noise in the manual transmission models are common.
Car Problem Reports
Volkswagen Jetta TDI Reverse Gear Failures and Noise in Manual Transmission Models are Common
Volkswagen Jetta TDI Problem
Average Mileage: 177,500 mi (100,000 mi - 250,000 mi)
Visitor, 2006 Volkswagen Jetta TDI, 100,000 mi
reverse gear knocks
Visitor, 2004 Volkswagen Jetta TDI, 203,000 mi
Rattle noise in trani when I release the clutch pedal. It's not the throw out bearing but sounds just like it
Visitor, 2004 Volkswagen Jetta TDI, 157,000 mi
first trans oil change done at 135000. Vw mechanic at dealer in fl. said not to service at 100000 better to let run till it died.Felt wrong so took it to dealer in tn.serviced ran fine then one day reverse started not engageing then after about 1k miles it stopped working at all.VW now has 225000 miles still waiting for other shoe to drop.Runs fine in forward,just no reverse.Every VW i have owned in the united states has had transmission problems.done with VW!!!
Visitor, 1999 Volkswagen Jetta TDI, 250,000 mi
reverse failure, and loud noise from engine