Welcome Bob. I wouldn't worry about troubles. Granted, some have reported serious issues, but most have not. I have over 2,000 trouble-free miles on my Trailhawk thus far. Mine was part of the first shipment of ~3,000 vehicles to arrive in the U.S.A. and the first Trailhawk my dealer had.. . . I'm a smidge concerned about buying a vehicle in its first model year . . .
And I purchased a first-year car model three times without issue (the Renegade was the third). If something breaks on the Renegade, the warranty will cover it.