I am about to make an offer on an A4 2000 X reg with 76000 miles - just had second AVS service but no belt replaced yet. I am confused about when the cambelt should be changed. I thought it should be every 60000-80000 miles. However when I called Audi to ask why the belt wasn't replaced they said it should only be replaced at 120K miles. I thought this strange so called another dealer and they said 80K. I then called another and they said 80K but when I said I was told 120K by another dealer they double checked and said yes it should be 120K. Apparently for the 2000 models onwards the replacement interval is now 120K. Any thoughts?