...the straight 6 is a nice unit, but the v8 is a must tbh...they had nickasil liner probs when they came out, alot were sorted..check the history for engine rebuild, not all needed it..i think from 99 it was properly sorted. Just listen to the engine they should not rattle, if it does walk away!
MPG not good no...but compared to an M5 V10 stonking