I recently completed a 3700 mile round trip from Arroyo Grande, CA to South Padre Island, TX. My NV 1500 was loaded with 2 windsurf boards, 5 sails, 4 masts, 2 large bins holding all my fins, wetsuits etc, 1 mountain bike, two coolers, suitcases and an interior platform that I made out of 1.5 inch pvc pipe with a matress on top for sleeping while traveling. I kept records of every fill up. If I kept the van to 65 mph, I consistently got 22+ mpg. When crossing a lot of Texas where the speed limit is 80 mph, my gas mileage dropped to 18 mpg. All of this was freeway driving, only stopping to get gas every 400 miles or so. My 2014 van now has 26,000 miles and have had zero problems. The only thing I have changed on it was having a side window installed in the sliding door to increase visibility when backing up. Just thought I would give another perspetive on gas mileage. Around town, real stop and go condtions, I only get 15-16 mpg.