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Old 05-10-2012, 10:27 AM   #7 (permalink)
MetroMPG
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Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,316

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

MPGiata - '90 Mazda Miata
90 day: 52.07 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)
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Maybe the wording of the tip is confusing.

"If your goal is to go farther without slowing then neutral with engine off is better."

But unless you're going down hill, coasting in neutral IS going to cause you to slow down. I regularly plan approaches to stops & turns so that I coast 100% of the way (no brakes, no engine braking) down to the appropriate point so long as it doesn't affect other drivers.

Frank's right in pointing out that maximizing coasting distance means you have also minimized the amount of time (distance) you were burning fuel before you began coasting (decelerating).

That's what makes coasting (engine off) the more efficient way to decelerate - you're off the "go pedal" sooner than in any of the other scenarios.
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Project MPGiata! Mods for getting 50+ MPG from a 1990 Miata
Honda mods: Ecomodding my $800 Honda Fit 5-speed beater
Mitsu mods: 70 MPG in my ecomodded, dirt cheap, 3-cylinder Mirage.
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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