By the love of all that is holy, in whatever you believe in, if you are reading this - AVOID THIS CAR LIKE A PLAGUE! So among ALL the problems this car has this is just one of them.

I started to notice a low grinding sound coming from below the car. I couldn't pinpoint it, though I thought maybe it was the transmission, so I took it into the dealer. They did a test which cost $150 and determined it was the passenger side wheel hub assembly a repair that cost me $700 after which the sound continued... so I took it back and they did a "deeper exam" for another $150 which at this point is annoying because they got it wrong the first time - and apparently this time they'll get it right?

They determined it was the drive shafted axle bearing. Because the car was under warranty, they decided to replace the entire drive shaft and not just the bearings. It was covered under warranty and cost $1,400 and 2 weeks of labor. This problem, if gone unchecked, could have caused catastrophic failure of the drive shaft while driving if driving for long distance at high speeds, such as a road trip on a highway.

At approximately 28-34 mph the vehicle would begin to vibrate or "growl". The feeling and sound did no coincide with the speed of the engine, rather the speed of wheels or vehicle. The vibration is mostly felt by the driver but can be heard all around. The problem started very minor and got exponentially worse over a couple months. It took a couple months to get the service department to notice, recognize and ID the problem. I had to wait over a month to get replace rear drive modules and whatever else they did. They said putting it in 4WD would make the sound/feeling go away, but when it was automatic they weren't sure what caused it. They replaced the read drive module I believe and the problem is beginning to reappear.

Update from Sep 4, 2016: Engineers cannot figure it out. I took it back to dealership and got them to pay it off and got a Wrangler. Nobody could tell me anything. I felt unsafe.