It actually is not too bad inside. My buddy has a 2016 Wrangler Unlimited and the leg room is actually a little greater in the Tracker surprisingly.
I am 6' 2" and 205 and for 2 hours or less in one sitting, it was ok. It was the longer trips that would get to me. Not just the space inside, but the noise, lack of sat radio....yep....what problems we have today, huh?
The upside is it gets 22-24 mpg in town and 26+ on the Hwy. If I remember from my Xterra, I will be lucky to get 14-16 in town and 20 was a great day on the Hwy.
I sold the Tracker yesterday and it will be missed. It was a fun little rig that would go all kinds of places and served us well for 11+ years.