My 1995 model is OBD2....not sure if a faulty coil pack will flag up on Vag Com but it would tell you if miss fire is from 1,2,3 or 4 then you can check the plug and lead first then the coil pack unless you can get hold of a second hand coil pack to test it. Whereabouts are you as plenty of people on here have Vag Com and may scan it for you.