View Single Post
Old 02-19-2013, 04:51 PM   #10 (permalink)
MetroMPG
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,429

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

MPGiata - '90 Mazda Miata
90 day: 55.44 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: 67.41 mpg (US)
Thanks: 3,961
Thanked 6,842 Times in 3,553 Posts
Yeah, but it's so frickin amazing, it leaves me more than a little skeptical. Especially after seeing the numbers from the Mirage you tested.

Their 75 mpg US (31.9 km/L) from a target speed of "80-90 km per hour" doesn't sync with the numbers you saw in your test car of ~58 mpg US / ~24.5 km/L at 80 kph / 50 mph.

Sure, their trip average speed would have been lower than their target cruising speed. And sure, their cars were different than yours (they had better aero, significantly higher tire pressure).

O wait...

I just took a look at topographical info for their route, and guess what: they went from sea level, to ~2000 ft / 609 m and back again. One giant pulse & glide? Or many pulses and glides, perhaps even with some neutral coasting on the way back down to Bangkok?

The needle on the plausibility-o-meter just jumped a little higher.
__________________
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