I have just bought a 2005 VW Beetle Diesal with 47000. It seems to drive fine in and around town but it seems very unresponsive in 4th or 5th 60mph. It accelertates very slowely. If youbare on an incline and drop from 5th to 4th is wont increase the revs and will maitain the same speed and not accelrate at all. I was wondering if this could be a turbo issue.