My E90 330I never had a single mechanical problem at all during my 2 years of ownership. Bought in 2007, drove from 20k-61k miles. Only dealership work was-bad passenger seat airbag sensor, replaced sticking door handles and replaced a cracked 162 style rear rim. 0$ paid out of pocket. Wish I still owned it......that N52 has basically been around since E36's and shouldn't even be compared to a 335I.
Not sure any new cars will last over 200k now, too many electronics to fail.
SOLD......E90 SG, ColdWeather Pckg, Sport Pckg, Logic7,H R Sports, Rogue Ikon, M sport shift knob/boot