This is an interesting question. I have owned several vehicles, some brand new, some low mileage well cared for used, some beaters, etc. I consider myself to provide significantly above average car care i.e. proper maintenance, careful driving, garaged, washings etc. None of my vehicles ever experience serious powertrain issues but I find they are just starting to wear out at around the 140,000 km (86,000 miles) and for me are done at 160,000 km (the classic 100,000 miles). By worn out I mean... the suspension needs work, various small and annoying things are cropping up (cruise control stops working, power windows don't work, rattles [which I hate], seats are worn, rust etc.). None of this would stop me from driving it if I were a student and / or tight on cash and I have been both in my life. I just can't get a vehicle to last more than 140-160kms it seems. My current driver has about 92,000 kms on it. I will be shopping when it hits 120 / 130 for sure as it will be tired. The rear bumper already has rust on it and there is a rattle behind the dash and another one in the driver door, etc. Consequently once this pattern developed in my car ownership, I really scaled back the maintenance work. Not negligently but to the bare minimum i.e. manufacturers OCI, if the fluids are life i.e. transmission / diff / brake fluid etc. then I don't change them anymore where I used to. I frankly got tired of maintaining a vehicle meticulously then selling a vehicle that was worn out to me (loose, some stuff not working, rusting etc.) with a perfect powertrain.