personally, if its over 4 years or 40k since the last one (i think thats the time/distance.. its late) i would most defo get it done asap.. you will only be full of regret if it goes bang! i know its expensive but better to be safe than sorry.
i did a bit of research before getting one done on my old mk4 and some of them can go past 100k without ever having one, but some can go way before, even before the stated time.
if i was you, i would most probably start to think about getting it done, not immediately but sooner rather than later.