View Single Post
Old 02-04-2008, 12:31 PM   #7 (permalink)
MetroMPG
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,515

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

MPGiata - '90 Mazda Miata
90 day: 52.71 mpg (US)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
90 day: 70.75 mpg (US)

Appliance car - '14 Mitsubishi Mirage ES (base)
90 day: 52.48 mpg (US)
Thanks: 4,062
Thanked 6,960 Times in 3,604 Posts
Quote:
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).
__________________
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
  Reply With Quote