Even though there are quite some pulls on this section of road, I got decent gas mileage doing the I-81 section. Last spring I filled up in Pigeon Forge TN., and even with about 10 miles of city stop and go traffic to get to I-40 and I-81, along with the hills on the interstate, I got 11.1 mpg when filling up in Wytheville, Va. And again, I got 11.1 mpg when I filled up at the next stop at home in Ruckersville, Va......and that includes a climb over the Blue Ridge.
My theory on this is that even though there are some hard climbs, I let the speed drop some to keep up with the truckers. Then on the downhill parts, I am getting great gas mileage because I am coasting, and that makes up some for the terrible fuel mileage I get on the uphill sections.
Chap , DW Joy, and Fur Baby Sango
2006 Ford F150 Super Cab 4x4
2008 Surveyor 263