It depends on which engine capacity engine you're looking at. The 1.4 DSG gearbox is prone to failure and a brand new replacement cost about 7,000-8,000. The 2.0 gearbox doesn't have the same reputation. Engine-wise both are fine.
Not reliable. About 140,000 km the trouble starts. Gearbox and cam chain, don't get it repaired by VW, then it's not worth it. I used Dynamic in Woodland, 30 to 40 % cheaper. They use Chinese parts but not lousy ones.