You make me sick!
No, actually that is encouraging, I just bought my first TW (2007) this past Summer and love it, but just when it turned over 4,000 miles it started to show a small leak near the base gasket. so far it looks like just a few drops, and I expect if that's all it is I will just keep an eye on the oil level, but this is a bit discouraging. The local shop said about $300 rough guess to replace it.
I should mention it runs great, have hit 70 with a passenger... all stock.
I can forgive it if it doesn't do much worse or if I do have to get it fixed if I get anywhere near your mileage without major overhaul.
I wonder what your "final mileage" will be...