And even for their older cars, most parts have gone NLA (no longer available), sending prices through the roof if you can find them at all! At least Porsche and Mercedes have programs to manufacture new parts for their old cars...

(My E39 M5 was one of the last user-repairable BMWs, but it's getting very expensive. On the other hand, it's driving a significant market for regular people designing and building replacement parts, whether 3D-printed, CNC'd, or homemade)