also:

- tons of sensors with limited lifespans

- more complicated transmissions with more gears

- auto start/stop

Pretty much all of these reliability reducers are manufacturers trying to eek a little more MPGs by throwing lots of complicated technology at the problem, which introduces a lot more failure points.

Headlights and taillights on my current vehicle are supposedly around $1500 each, mostly due to a bunch of sophisticated sensors being built in.

Back in the 80s headlights were standardized (in the US at least) - you either had rectangular or circular. They were available at every auto parts store. Now they're a special order item from the dealer.