[xyzzyz]

> Now, essentially every new combustion engine has them because you can lower displacement and actively manage power output to a greater degree, pushing up efficiency.

In Europe, yes, due to extremely stringent fuel consumption regulations — essentially, the engine needs to have very small displacement, so you need to add turbo to get at least some power out of it. A typical new car in Europe has turbocharged 1.2L engine or something in this neighborhood. In the US, however, naturally aspirated 2.0L engines are still king.