Should my Renault Megane Coupe have snapped a second cam belt so soon?

I have an 02 Renault Megane Coupe and had the mis-pleasure of the cam belt snapping on me two years ago. The car had done 75,000 miles. This, I understand, was very good going for the first belt. But two years later (just last week) the cam belt has snapped again, causing pretty much the same damage and costing pretty much the same amount (circa £1500, which I haven't agreed to spending yet). Would there be an underlying reason for the cam belt snapping so soon after the first replacement or am I just unlucky?

Asked on 17 August 2010 by dowf

Answered by Honest John
Not a lot of point in replacing a timing belt without also replacing the tensioner, any minor pulleys it runs on and, if the waterpump is driven by the timing belt, that too. Most timing belt failures are not failures of the belt. Rather they are the belt being thrown off by failure of the tensioner, of a pulley or of the water pump.
Similar questions
The cambelt of my daughter’s Citroen C8 broke at 99,000 miles and repairs were likely to cost us more than £2000. For normal use, the handbook recommends changing at 100,000 miles. Otherwise, for "severe"...
Is it reasonable for a warranty company to refuse to fund the costs of replacing a water pump, and repairing subsequent damage, on a regularly serviced vehicle by stating that "The water pump would have...
I purchased a new Peugeot 107 in late September 2008 for my wife. It has always been serviced where it was purchased: Robins & Day in Morden London. It has completed 16,000 miles. Recently it developed...