In the years of my car ownership I've seen failing engine seals, multiple kinds of EGR failures, catalytic converter degradation, intake manifold baffle solenoids fail, fuel pump failures, thermostat failures, and more. And that's just failures, not all the preventative maintenance like changing spark plugs, changing timing belts, fluid replacements, valve clearance adjustments, and more.
Meanwhile the maintenance schedule for my EV drive train is a fluid change every 150,000mi.