We had one for a year. 2017 Renegade Trailhawk, with almost every option you could get, so some of my observations don't apply to all Renegades. We had the 4 cylinder NA multiair engine. Here are some thoughts...
Plus+:
AMAZING AWD capability...just wow!
cute
decent suspension, rode nice (firm yet compliant)
good gauges
good infotainment
fun easter eggs
multiair technology is COOL! (if you don't know what this is, look it up, total geek city!)
roomy for the size
easy to get in and out of
steering wheel heater was HOT!
fog lights were nice
Negatives -:
leather seats were junk and not comfy
premium stereo (beats) was anything but
automatically turned on seat heater, heated wheel, and rear wiper...often not appreciated!
fuel mileage was not that great (our new Alfa Stelvio is beating it by 2 mpg)
too small for us
felt cheap
noisy on the highway
wind noise
too many on the road
underpowered and loud on acceleration
engine didn't sound good
premium headlights not that great
paint was cheap and chipped easy
keyless go wasn't that reliable
seat heaters were slow - my hands would already be on fire when I started to get a warm sensation in the buns
not fun to drive - slow and just not responsive
#1 complaint...the transmission was a HUNK. It had a 9 speed auto. Didn't use 1st gear, always started in second. It didn't use 9th gear. If you forced a shift into 9th in manual mode, the gas mileage dropped (at ANY speed). It was never in the right gear, and took an eternity to downshift when you wanted to accelerate. It often didn't know what gear it should be in...especially when doing a rolling stop and you wanted to take off quickly, it would totally choke sometimes literally for a full second before it chose a gear to get you moving.
If you aren't into engaging driving, and don't mind having the same car as a bunch of other folks, I think it could be a real decent car for the money. In a few years, they will be great cars to pick up for your teen driver, as they are slow, very sure footed, cheap, and seemed reliable (although ownership was short).