4 years or 40k for the timing belt? 
My LC has only done 40k but is coming up for 5 years old in December. When I enquired about the timing belt change at the last main dealer service in June they told me not to worry as it wasn't due for replacement until 8 years or 80,000 miles![Furious [:@] [:@]](/forums/styles/seatcupra/oldforumsmileys/furious.gif)
Rather the opposite to your experience cmc
I agree with t'others though, it does sound like your dealer is taking the wee wee.
Fluff

My LC has only done 40k but is coming up for 5 years old in December. When I enquired about the timing belt change at the last main dealer service in June they told me not to worry as it wasn't due for replacement until 8 years or 80,000 miles
![Furious [:@] [:@]](/forums/styles/seatcupra/oldforumsmileys/furious.gif)
Rather the opposite to your experience cmc
Fluff