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.
For every 100 pounds of weight in your vehicle, fuel economy decreases by one to two percent. Also, reduce drag by putting bulky items inside the vehicle or trunk instead of on a roof rack. Keep track of your fuel economy. A drop in your vehicle's fuel economy can be a sign of engine trouble. Keep track of your fuel economy by noting the odometer reading and the number of gallons purchased each time you fill up. To calculate your gas mileage, divide the number of miles traveled between fill-ups by the number of gallons purchased.