gjmosko wrote:
I have a 2011 ecoboost supercrew 4wd 3.55 rear end and a 2013 Heartland 3050bhs with a dry weight of 6000lbs.I assume fully loaded we were around 7000 lbs. We just towed 650 miles from Akron Ohio to Myrtle beach SC. Use the tow/haul mode. My mpg was 9.8. The hills in West Virginia and the Blue ridge mountains in Virginia were no challenge for the ecoboost. The truck performed just as shown on the torture test videos.
This. The mpg suffers because it can maintain speed on the hills so the tendency is to just use that power since you can. Even though it may be climbing at 2200 RPMs it burns fuel at the same rate as a regular gasser at 4000 RPMs. Decent fuel economy as a daily driver though.