a - never
b - 10,000 - 25,000
c - 25,000 - 40,000
d - 40,000 - 55,000
e - 55,000 - 60,000
f - 60,000 - 75,000
g - 75,000 - 100,000
h - over 100,000
55,000 miles - meshing noise, loud clunking noise at low speed when on/off gass and finally difficulty getting first gear - £1,300/$2,300 to replace. VW are taking us for a very expensive ride.