Be aware that all emissions issues are covered by an 8 year - 100,000 mi "Federal Warranty". My 2016 had a DPF explode at 20K and it required an entire new exhaust system - 10K. At first the dealer acted as though this might be on me. As I researched emission claims I learned about the mandatory federal warranty for emission issues. My TitanXD (2016) currently has 26K miles. The exhaust can blow up several more times and it will not be on my dime.