My experience(s) with my 2008 Compass 2.4L w/CVT is that anywhere from 3800-4000 RPM is the engine's happy torque/pulling zone (using the Tiptronic-like manual shift feature). Anything above that, and the engine just works harder and makes more noise without any appreciable acceleration.
I got the following from a CarAndDriver review page, and it seems to concur with my assessment:
DISPLACEMENT: 144 cu in, 2360 cc
POWER: 172 hp @ 6000 rpm
TORQUE: 165 lb-ft @ 4400 rpm
UPDATE: I looked at the tach on my 2008 Compass 2.4L CVT, and there is a striped/broken red-line mark at about 6400 RPM, and solid red soon after that.
Last edited by CompassSportMan; 02-22-2018 at 06:05 PM.