I've just brought an 2004 Audi A3 2.0 TDI Sport S line and it seems to be very edgy when driving!!

Took it to Russell Automotive and they did a car check for £72 but now I need to spend another £144 to find out what the two problems are they found in the initial check (2 faults in gearbox (implausible transmission shift circuit open) and 2 minor faults in engine)

What to do.....Is this a commen fault???