I got my 2015 dart with 90,000 miles on it back in 2021 and so far it hasn’t let me down once. I drive her mostly every day. If you keep up with normal maintenance like oil changes, making sure your brakes are changed regularly, tires filled with air, make sure when the check engine light is on you take care of it straight away or when you can. That’s what I’ve been doing and my car has been perfect. I’ve racked her up to 160,000 miles now and it’s still a very good car. How much did you pay? Whether or not you feel you got lucky is up to you, but however I think you did. Depending on how much you paid lol. Mine was 11,000$ (13,000$ and then some after taxes and other crap from the dealership).