[epgui]

I had a 2006 Cadillac CTS that had to get the engine rebuilt (btw, very comfortable cars, but they're basically garbage made out of styrofoam). I know it's infrequent, but it happens.

And either way, the issue isn't just with the engine-- having an ICE means you need to make a bunch of design choices you wouldn't otherwise have made, you're forced to use certain materials over others, you're forced to account for all sorts of material stress and vibrations, your centre of mass is quite high, you have a lot of weight on the front tires, etc etc. All of these other problems more or less come with the engine.

There's also transmission and gearbox design, etc.

[Spooky23]

Sure. My sister had a defective Subaru that was a similar story. I believe that car had 3 engines due to some issue with that model year.

Those are the exceptions that prove the rule. They are rare and more indicators of process failures than some fundamental engineering problem.