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Old 06-02-2014, 10:00 AM   #5 (permalink)
MetroMPG
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Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,213

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

MPGiata - '90 Mazda Miata
90 day: 53.56 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)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
90 day: 70.75 mpg (US)
Thanks: 3,790
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In the U.S. EPA test, the manual is handicapped by the test procedure which dictates non-eco shift points and prohibits coasting when decelerating.

As a result, even though a manual may be rated worse than the automatic, in the real world it can return better results with just basic ecodriving techniques.

See: http://ecomodder.com/forum/showthrea...ing-27416.html

I ran a brief test of a CVT (rated 40 mpg US combined) against a manual (rated 37 combined) Mitsubishi Mirage, and the manual won out in urban driving.

See: http://ecomodder.com/forum/showthrea...age-27384.html

Similarly, the 2015 Nissan Micra (new to Canada) has nearly identical ratings for the manual and automatic, yet in real world ecodriving, the manual beat the automatic (4 speed slushbox) by 10%:

See: http://ecomodder.com/forum/showthrea...ing-28897.html

The only time a higher-rated automatic may make more sense is on the highway if the gearing is so much taller and you do the majority of your driving on the freeway.

Best advice: test both yourself in the same conditions on the same route!
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Honda mods: Ecomodding my $800 Honda Fit 5-speed beater
Mitsu mods: Oops, I did it again! Bought another cheap, 3-cylinder Mirage. Mods in progress...
Ecodriving test: Manual vs. automatic transmission MPG showdown



EcoModder
has launched a forum for the efficient new Mitsubishi Mirage
www.MetroMPG.com - fuel efficiency info for Geo Metro owners
www.ForkenSwift.com - electric car conversion on a beer budget
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