I just traded my 2008 Ram2500 with CTD for a similar 2015 two weeks ago. The 2008 had 110,000 trouble free miles. Never in shop except for normal maintenance. The emission system was intact and worked great, but I know some of the early 6.7 had emission issues. The 67,500 miles service is expensive. I didn't need the second one yet, but was quoted way more than $500 by the dealer ($900+ if memory serves me). Make sure it's had a second 67,500 mile service. If it has not call a dealer, get a price, and subtract from your offer. Good luck. Keith