I have heard that the new model diesel version are having problems.
Only dealerships are driving them and they are returning them to the factory.
Don't know why.
Have been lurking around a Challenger forum and haven't heard of many having problems...one problem was with a power steering hose connection, but mine has been in for 2 services and hasn't had a spanner on it yet !!
Depends on what you want a 4wd to do....if I only wanted to tow on the black top ( and could afford it ) I would have a Pajero....just a nicer car to drive..
But as I also like to go offroad, the Challenger is my choice....and a better 4wd off road to boot than the Paj....diff lock standard, better departure angles and smaller and narrower..
Bad points....engine noise ( if you like the auto )....probably a bit more "truck" like compared to a Paj or Prado