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Old 06-02-2014, 05:10 PM   #10 (permalink)
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Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,196

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: 3,777
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Yes: numerically smaller = taller gearing.


1) The vast majority (94%) of people buy automatics instead of manuals, and they want to increase their fleet average MPG.

2) Manuals can be marketed as "sporty", which unfortunately means high RPM for best engine response/power in top gear

3) In the 80's & 90's, fuel economy used to be a "byproduct" of relatively simple, light, moderate or low-powered economy cars with manual transmissions. Now fuel economy has become a "feature", and to get the "feature" you have to pay more for the automatic.

4) Marketers/product planners think people are incapable of downshifting their manual transmission for power/passing/climbing once they've shifted into top gear.

5) Many auto journalists will complain about "too tall" gearing (see Ford Fiesta 1.0L turbo)

6) etc...
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

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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