My Wife's Charger SRT8 (6.1 Hemi) has over 85,000 miles on it now-not a single engine problem. Still runs very strong as well. We bought it brand new 5 1/2 years ago. It's completely unmodified, even the stock air box is in place.

73 Challenger 340(416),E-heads, 727, 3.23 SG
2015 Challenger R/T classic B5, wife's car
2010 Ram 3500 Crew Cab SLT dually 4X4
2016 Challenger Hellcat Redline Red A8