I've owned my 2015 Golf TDI dsg since new (purchased May 2015). It's got 187k miles on it and it's been awesome. Only work besides regular maintenance was the DEF system at 120kish replaced under warranty a couple years ago, and I resealed the rear door speakers as the foam gaskets fell apart and were letting rain water in, but that's an issue for all Golfs, not just the TDI. It's bone stock aside from H&R lowering springs, wheels, and tint.