Not just planned obsolescence, but programmed...
At about the five year point, all cars built since say, 1990, require a crushing amount of maintenance (timing belt, etc), followed by burnout of electronic components that can often be obtained ONLY thru a dealer's service department. The cost of new electronics is criminal...$600 for a power seat control?
My two 1983 diesel Benzes represent "mature" tehnology that can be maintained reasonably, deliver reliable performance, comfort, and presentable style. Same for my '73 VW convertible...and my '49 Packard, for that matter.
Cars and all other consumer products are now expected to really be CONSUMED...not maintained. The BIC lighter morphed into vehicular form...use it up...toss...replace.