Unfortunately. with a used car you can never ever predict what will happen! It s up to you to decide if you are willing to take the chance.
My first car was a polo 1 L and everything on that car went wrong (last straw was when the clutch went) My Best friend bought a 2000 polo a few years back and has never had any trouble with her car so you can never tell....!
2.5 k for a 2001 @ 80 000 miles sounds too much to me though.
Happy car shopping!