I've for a 2016 UForce 500 EPS, not the original owner, with a rattle in the rear when I accelerate. At idle the rattle doesn't exist. I've discovered a thread here about it possibly being the muffler hangers, any other ideas?  Thanks in advance.

I looked at a 2016 UForce 500 EPS this weekend; 1793 miles, and they want 5K for it. Just looking to see what kind of opinions you might have on them. Also can someone explain what seems to be a 2 step process to use the 4WD? You push one button then slide over a lever, then press another button? Your not in 4WD when you push the first button?