Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Effect of wet roads on efficiency: estimated 14.5% MPG drop

PaleMelanesian · 10-14-2009, 03:10 PM

My historical data shows a 12% reduction in FE when it's wet. I record it as "wet" when I would rather not be out in that weather, or would choose to take an umbrella, or right after a rain when water is standing on the roads. If it's just misting but the roads are dry, I count that as dry.

My data also shows an 8% gain when it's humid. Comparing only morning commutes, and calling it "humid" when there is dew on the car or fog in the air.

10-14-2009, 03:10 PM	#9 (permalink)
PaleMelanesian Master EcoModder Join Date: Dec 2007 Location: Texas Posts: 1,479 PaleCivic - '96 Civic DX Sedan Team Honda 90 day: 74.33 mpg (US) Thanks: 148 Thanked 138 Times in 97 Posts	My historical data shows a 12% reduction in FE when it's wet. I record it as "wet" when I would rather not be out in that weather, or would choose to take an umbrella, or right after a rain when water is standing on the roads. If it's just misting but the roads are dry, I count that as dry. My data also shows an 8% gain when it's humid. Comparing only morning commutes, and calling it "humid" when there is dew on the car or fog in the air. __________________ - - - - -Best 11-mile commute: 105 mpg - - - - -Best tank: 88.5 mpg / 1133 miles