I'm toying up the idea of either buying a MK4 Astra 1.8 SXi or Seat Ibiza TDi. Now, as Seat is part of the VAG, they're German and obviously well built and reliable.
However, they're ugly! I love the look ok a 3 door MK4, but I don't know how reliable they are. What mileage can you get before you get any major issues?
Also, how do these two cars compare on performance?