My wife and I bought a brand new 2012 JK Sport (2 door with hardtop, A/C, 3.73 ratio, tow package, 6 speed manual) in June 2012 for the direct purpose of building it up into a capable backcountry explorer. We figured we'd better buy a new Jeep before Fiat totally ruins it. It was the first brand new 4x4 we've ever purchased, and we have had many 4wd's in the past including a couple IH Scouts, a Jeep CJ5, a Toyota pickup, and several Nissan WD21/22's, all mildy modded with lifts, tires, diff ockers, bumpers, etc. I've always done 100% of the mechanical work on our vehicles, and am very particular on maintenance.
Things that have been an irritation to us, in no particular order:
1. Black interior - shows dirt, stupid color for a sunny desert climate, and the seats aren't very comfortable.
2. Carpet is the most difficult to vacuum and clean of any vehicle I've ever owned.
3. Windshield wipers don't have much tension at the lower part of the drivers side, and always leave smears when driving on dirty roads.
4. I hate the black fenders, and they are ugly and horribly difficult to clean.
5. Windshield chips and pits more than other vehicle I've seen.
6. Back seat floor area design is ridiculous with no place for passenger's feet (our daughter hates it).
7. Hose and electrical routing, hardware, and retainers seem cheap and poorly engineered, especially compared with Nissan and Toyotas I've had before.
8. Steering stabilizer hangs way too low and is a rock magnet.
9. Rear shock / lower control arm mounts hang too low and are rock magnets.
10. Reverse gear in the NSG370 6 speed is way too high ratio, and it is very difficult to back up any type of incline especially in high range.
11. The Pentastar v6 engine has no torque just off idle and the electronic throttle seems to have an annoying delay in response, which makes it difficult to bump up rock ledges, and I've stalled more taking off from stop lights in this Jeep than all other vehicles I've had in the past combined.
12. Factory battery is junk and gassed acid since new (I removed and cleaned it several times a year), and it died totally a month ago.
13. Ridiculously low tow rating even with the tow package. My '01 Xterra is double the JK's rating.
Things we love:
1. Off road capability and utility for rugged backcountry use. It is the only REAL traditional 4x4 left in the US, which is why we bought it. There are no others available which compare, especially with ease of off road modifications for clearance and capability.
2. Its an American icon!
3. Interior is very nicely laid out and pleasant.
4. Ride and drive is excellent for a lifted solid axle 4wd.
5. LSD function of the traction control in 4 low is very good, and has narrowed the capability between open axles and Rubicon lockers.
6. Removable top and doors.
7. Its just fun and puts a smile on our face every time we hop in.