Cars are way more complicated. Maintenance is somewhat the same for things like brakes and oil, but taking down a check engine i light trigger is worse than wifi. No scanning for a code doesn’t tell you what broke. It tells you what isn’t reporting right. Diagnoses is up to you.

That being said, cars are way more reliable in general. We don’t need to fix them nearly as often. Unless you’re me and keep buying 90s shitboxes to save money.