Most of the time the powertrain is the last thing to go. All of the manufacturers have the motor and even automotic transmissions worked out such that they are not what dies on the car. now it's all the rubber and electronics. Frankly, they could do better with these too, but after 12 yaers or so (never mind my 25 year old 352e) they want you to buy another car. So why would they build a reputation of logevity and reliability, when they could build a reputation for good sales instead. Just another good e30
1985 325e