ahhh vanos vanos vanos
that's not true whatsoever though about e46 failure vs e36 failure
i have seen plenty of E46 vanos issues first hand; rattling, shearing off the front of the whole engine, emptying the oil in 10 seconds flat from them, unable to idle the car etc... the vanos issue is overrated though and people start replacing them when they get noisy and they rarely actually "fail". you always get noise from the gears over time as they wear and also the seals spl
BUT DON'T WORRY ABOUT THE VANOS
my M3 is on it's 2rd vanos and i have rebuilt this one twice down to sealing leaks on the solenoids. yes they're not cheapbut you don't buy something like that and expect a £100 service every year do you
you should worry more about fat birds in bikinis wanting to mate with you, things like getting pubes stuck in your keyboard, and the french. there really is more to M3 ownership than the vanos hype