I have a 2013 2500 SV V6 hightop same story as Honey Do It Right i got mine used from a Nissan dealer that used it as a parts delivery. It had just over 10K when I got it.. i feel i got a good deal on it. I have mine loaded down with a full van work package inside and i have it filled up with parts and other items a few thusand pounds for sure. Only have hade it a few weeks now but my mpg is not very good, First tank driving in town most of the time 30 to 45 mph i only got 10.2 mpg.. Second tank with a 50-50 mix of intown and highway driving i got a little better at 11.4 mpg still not very good I was hoping for a avarage of 13 to 14 so i am a bit disipointed for sure but so far i love the van and love driving it. I moved up to the NV from a Ford Transit connect mini van that i was getting around 21 mpg all loaded up but i ran out of space. I am starting to charge $5 more for many jobs i do now to cover the extra gas. Working out of it has been great!! Will be taking a long two day trip soon i am hoping to see some better gass millage on that i hope.