I have the 06 2500 Quad cab 4x4, 5 speed auto with 5.9 Cummins and love it. This is my second Dodge Cummins. I put an after market cold air intake on along with a 5 inch cat back exhaust and the EDGE Mileage max chip. At 65 MPH I am getting a WHOPPING 28 MPG highway and 19.1 city according to the overhead computer and also against actual mileage according to speedo. Dealership has no problem and says they actually recommend the Edge Mileage Max chip which does not affect the warranty. I wouldn't have any other set up as the increased mileage and HP is amazing. Wouldn't have it any other way.
Overall strength of the engine & transmission set up. Just a super truck all around.
Some kind of bumper strip along sides of truck to stop dings from other cars. The one included by factory is to low.
† Edmunds.com received the highest numerical score in the proprietary J.D. Power 2014 Third-Party Automotive Website Evaluation Study℠. Results based on responses from 3,381 responses, measuring 14 companies and measures third-party automotive website usefulness among new and used vehicle shoppers. Proprietary study results are based on experiences and perceptions of owners surveyed from January 2014. Your experiences may vary. Visit jdpower.com.