Hi there, I'm trying to help a friend diagnose a problem on his 2000 A3 1.8 Quatrro T Sport (70K miles) and hope that you can help. Car drives great and really flies up through the gears, but every so often (possibly getting more frequent), if he drops it down a gear for an overtake etc (particularly 5 to 4, and 4 to 3), then there is very little power and the car is very flat (particularly around 4K rpm) and fails to gather speed, so he just has to change back up. Having read some other posts I'm wondering about N75 valves, Diverter Valves, coil packs, etc, etc ?????? Please can someone help? Thanks. Matt.