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Old 05-03-2010, 11:14 AM   #1 (permalink)
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Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
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Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 52.8 mpg (US)

Winter beater Metro - '00 Chevrolet Metro
90 day: 61.98 mpg (US)

Fancy Metro - '14 Mitsubishi Mirage top spec
90 day: 58.72 mpg (US)
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Transport truck "Trailer Tail" - aftermarket aero kit ~5% MPG improvement (video)

Saw this today:

ATDynamics TrailerTail ® – increases fuel efficiency of tractor trailers by over 5%

In 2008 it became the first and still the only rear fairing to be:

  • validated for fuel efficiency by the US EPA based on SAE testing;
  • sufficient for standalone compliance with 2010 CARB regulation supporting trailer aerodynamics;
  • exempt from US DOT length restrictions verified in an FHWA compliance letter provided to all TrailerTail® customers.
  • The device opens with one touch and closes in 5 seconds.
  • In the open position, it boosts fuel economy by 5.1% at 62 mph, according to SAE J1321 Type II fuel economy testing.
  • In the closed position, it folds flat against swing doors to enable normal access to cargo.

Grabbed this tuft testing image from the video as well:

company web site: - way to go!

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Latest mods: 3-cylinder Mitsubishi Mirage. EcoMods now in progress...
Ecodriving test:
Manual vs. automatic transmission MPG showdown

has launched a forum for the efficient new Mitsubishi Mirage - fuel efficiency info for Geo Metro owners - electric car conversion on a beer budget
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The Following 5 Users Say Thank You to MetroMPG For This Useful Post:
aerohead (05-03-2010), KamperBob (05-05-2010), NeilBlanchard (05-03-2010), orange4boy (05-04-2010), Piwoslaw (05-05-2010)