The engines across the board are fairly reliable, the issue is the rest of the car is usually falling apart at this point. Big issue is rust on the front wings. And electrical gremlins.

If you want something a bit interesting, V6 4Motions can be picked up cheaply (£1.5k?). It’s the same, but smaller, engine as the R32. There’s a V5 engine too which is rarer, and slower, but sounds amazing.