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Old 01-13-2009, 09:58 AM   #14 (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: 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: 61.46 mpg (US)
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One of the things that surprised me about the car/graph was the point of best fuel economy at 40 km/h.

That speed happens to be pretty shortly after the transmission shifts into 3rd gear (of 4), so the engine is turning fairly slowly. It surprised me because it's the first speed vs. fuel consumption graph I've ever seen where the best performance isn't in top gear.

You can tell from the graph that the shift from 3rd to 4th (with torque converter lockup) happens between 60-70 km/h (shifts right in the middle at 65 km/h or 40 mph, actually).

It's possible to bleed speed down to 60 km/h and then hold 4th gear there, which would have raised that MPG point on the graph quite a bit, but I didn't. The transmission will downshift at the slightest prod under those conditions.
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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