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Old 02-04-2008, 01:31 PM   #7 (permalink)
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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: 66.29 mpg (US)
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Originally Posted by DAN View Post
when off the throttle, coasting or not, most motors idle. i can't see how any useful fuel is saved by not idleing that little bit.
Almost every major manufacturer is rushing to introduce idle-stop as a fuel saving measure in its vehicles. And not just hybrid vehicles.

You typically see figures in the 5-10% range for fuel saved in urban driving from using idle-stop.

EDIT: some, but not all, of these vehicles shut down when the vehicle is coasting or braking at low speeds; others only shut off after the vehicle has come to a full stop.

E.G. BMW is claiming an 8% improvement on its 1 series (non-hybrid).
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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