I think this is a result of automotive technical progress slowing down. And I don't mean that in a bad way. For the past 100 years, we have been developing better and better cars, with both breakthroughs and incremental improvements in the drivetrain, safety, comfort, reliability, etc. Now though, cars are consolidating. Most car companies only have a handful of 'platforms' on which they build various models. For exa…
Volvo appear to have 3 main engines and multiple versions of the same engine. And I suspect that some ICE engines in use are still variants of pre war designs the Chevy Small Block v8 is a little newer starting mid 1950's
https://en.wikipedia.org/wiki/List_of_Volvo_engines
I thought they only produced the 2.0L 4 cylinder petrol in various configurations (turbo size, hybrid, non-hybrid). As it turns out they now also have a 3 cylinder engine.