1 Census 2010 Race for Effingham County, Illinois. 2  Census 2010 Latino for Effingham County, Illinois. 3  Census 2000 Race for Effingham County, Illinois. 4  Census 2000 Latino for Effingham County, Illinois.  Illinois Voters for Effingham County, Illinois.
On average, a truck traveling at 65 mph instead of 75 mph will experience up to 27-percent improvement in fuel consumption. As a rule of thumb, for every one mile per hour increase in speed, there is a corresponding 0.14 mile-per-gallon (mpg) fuel consumption penalty, says Kedzie.
Despite more sales of pickups and SUVs, gas mileage of new vehicles climbed last month for the first time since August, the University of Michigan Transportation Research Institute reports. The average gas mileage of all cars and trucks sold in the U.S. in January was 25.4 miles per gallon. While that was up from 25.1 mpg in December, it was down from August's all-time high of 25.8 mpg. As gas prices have slid, more people have been buying larger, more fuel-thirsty vehicles.