Main issues I see are clogged ERG/DPF. In the winter sometimes frozen DEF. They don’t like short trip city driving, if that’s all you do, don’t get one, you’ll have issues.
They can be a reliable engine if you treat them properly. Don’t idle it excessively, they plug up. Make sure it gets regular highway driving so it can regen properly. As soon as average temps are at or below freezing, put the winter front on. Maintenance is big, fuel filters, air filters, oil changes. They can be very sensitive to dirty air filters, you’ll get a CEL.
As a tech though, I’d personally never own one, especially out of warranty. I’d stick with the hemi. You’ll get less mpg, but initial cost,maintenance, fuel price are all lower. Many places diesel is as much if not more than gas. As well a much more proven/reliable engine. That’s just my opinion though.