You don't know the same Jeep drivers I know.
I believe the new straight six is a Mercedes engine. It's a stretched 4 cyl to reduce tooling costs. It's length is shortened by it's smaller displacement, smaller piston diameter and increased stroke. It uses a starter/generator to boost power and improve throttle response. The accessories are electrically driven. Interesting combination of technology.
I've seen the new Broncos in action. Their trail performance is impressive.