Pulled boats for many years, now have a Rockwood Minilite 2014s. Pulled by Ford F150 Lariat. Gas mileage went from 16 mpg to 8mpg. Just want to see if this is about the average drop in mpg. Don't see ...
Typical numbers I see range between 6 to 14 mpg. The higher numbers are almost always diesel power.
Your vehicle may get 20 when not towing and 8 when towing. Another vehicle may get 15 when not towing and 8 when towing. The range of fuel consumption seems consistent regardless of tow vehicle.