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Old 09-05-2020, 09:40 AM   #1 (permalink)
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Join Date: Sep 2015
Location: texas
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goldfrontier - '98 nissan frontier xe extended cab
Team Nissan
90 day: 33.05 mpg (US)

silvertaco - '09 toyota tacoma prerunner
90 day: 28.44 mpg (US)

Agcivicsedan - '17 Honda Civic Lx
Team Honda
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Road surface effect on mpg

Any anecdotal stories about your experiences with road surface changes that has effected your tank to tank average mpg? Mine is that in the last 2 weeks a 12 mile stretch of my rural route home was resurfaced with a larger rougher gravel. That portion of my trip mpg went from 56 to 58 mpg(some good coasts on that part) down to 51 mpg. Overall effect is morning commutes went from 53.5 avg down to 51. Evening return 57 mpg down to 53-54.

Almost makes it worth it for the faster highway route now despite the even lower average Iíll get. Save 7 or 8 minutes but lose 1 or 2 mpg vs what used to be losing 4 or 5 mpg for the highway route.

The actual coasts down hill used to net me a gain of 3 mph now barely hold speed. I also now also lose speed on the shallower coasts which used to maintain my mph to within 1 mph.

Any other stories of route changes for similar reasons?


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