Engine wise, my dad's '92 525i (M50 engine) has 425,000km, he still drives it over 100km everyday. No issues with his powertrain at all, the engine has never been opened.
"Driving is like a narcotic, an addiction that can take over lives. It ruins people, breaks families apart, and even kills. Itís habit that needs to be fueled. Time, money, rationality, sweat, knuckle skin, and anyone who disapproves are of little importance to a driver, and are often overlooked. Hi, Iím Nelson, and Iím a drivaholic."