On another forum, a Challenger owner posted that his 2010 SE has hit 100,000 with no problems. He drives 150 miles per day and changes the oil every 3,000 miles. That is refreshing to hear. We always learn about the "lemons." If you take care of these cars, they should last a long time.
I have friends that put 80,000 on their R/T in the first year. It is their daily driver and their show car.
I've got 39,800 on mine with no issues and I've beat on it pretty hard. Haven't had any issues but getting down to not having a lot of factory Dodge left in it.