the common “push down” ones on the 01-05 1.8ts suck i had a dead one at 24k… the 00 1.8t and the Audis have better bolt down one, which proved much more reliable…but in your case, i hope they all fail together so you spend 400$.
i upgraded mine to bolt down bremi coils, much better setup, they cost me about 200$ vs the 30$ average for a stock junk pushdown.