Need feedback from Mopar dealer service techs on Fiat era Chargers

My question is mainly for dealership mechanics, but I welcome comments from owners of Fiat era Chargers also. A friend of mine is a mechanic at the county sheriffs a few cities away. He's maintained a fleet of Chargers as well as other makes for quite a few years, so he's seen the newer models come and go. He's told me for years that the Fiat era Chargers suffer from insufficient gauge wire used throughout, as well as different fuel issues and front end problems. Based on what he sees, he's stated he wouldn't own one from 2011 to 2018 based on reliability. He speaks highly of the ones up to 2010 though. He's a straight shooter and a Mopar guy so I have to put some weight on what he says. My point for asking is to gain others opinion and experience with these cars, as my sons going to be ready to drop some money on something after Christmas. Your experiences are welcome FABO!