barenekd: I checked the odometer with the mileage posts along the road,for 10 miles,several times,and found it to be .2 miles fast,in ten miles. When I filled up at 169 miles,indicated,I subtracted 3 miles,and put in 2.187 gallons,for 75.9 mpg. I figured that was close! The speedo seems to read about 3-4 miles an hour fast. Lynn