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Old 12-09-2007, 10:03 PM   #13 (permalink)
MetroMPG
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Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 21,828

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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Quote:
Originally Posted by newtonsfirstlaw View Post
So yeah, the long and the short of it is that there is a synergistic effect going on, pulse and glide works best with a low CdA.
Agreed. It's why the Honda Insight was/is a FE monster in the hands of a determined hypermiler. Light weight + low drag (aero, rolling & mechanical).

Another point I've been thinking about lately is that light weight (lower momentum) tends to reveal the impact of poor aerodynamics much more dramatically in a P&G scenario than a heavier vehicle with similar CdA.

I read an account of the Daimler smart car recently where the driver was somewhat surprised/perplexed by its poor coasting ability. At ~1600 lbs (-ish), with that shape, I wasn't surprised at all.
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