Hi Jimbo, The mk3 doesn't have isofix so you'll need the good old fashion car seat. Also, I've noticed my rear belts are slightly shorter than in my mk2 & mk4, even the corrado too, I can still just get the small (rear facing) carry seat fitted, all others fit fine. is this what kind you have? I normally put the seat in, place the belt over the lap & into the holder before wrapping round the back of the seat, Hope that helps, Carl