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Old 07-15-2008, 01:30 PM   #14 (permalink)
MetroMPG
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Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,526

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 52.71 mpg (US)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
90 day: 70.75 mpg (US)

Appliance car - '14 Mitsubishi Mirage ES (base)
90 day: 60.06 mpg (US)
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MazdaMatt: probably useless, yes. You're going to have detached, turbulent flow coming off the air dam.

Raysp30: shaped deflectors like the kind the Autospeed author tried will be better than the flat "spat" type OEM's typically use. (But more likely to be damaged on stuff inside approach angles, and harder to build).

Aero concept cars usually go with shaped deflectors, eg:

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Mitsu mods: 70 MPG in my ecomodded, dirt cheap, 3-cylinder Mirage.
Ecodriving test: Manual vs. automatic transmission MPG showdown



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www.MetroMPG.com - fuel efficiency info for Geo Metro owners
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