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Old 11-28-2007, 02:15 PM   #1 (permalink)
MetroMPG
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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
Finally: 100 mpg (US) round trip in the Blackfly - new and improved: 133 mpg

(Originally written May 24/06)

I've been scratching this itch since I realized it was possible, and after supper today I pulled out the stops and headed out to do the city loop:



(101 mpg - click to zoom)
  • ambient 70F - ish / 20 C
  • 30 min block heater
  • removed 55 lbs / 3% of vehicle weight (passenger seat, spare tire/jack, rear parcel shelf, misc.)
  • used moderate load/low RPM acceleration technique
  • alternator unbelted (I've been running that way since almost the beginning of this tank, except for approx. 30 miles of a 60 mile highway trip)
  • made 3 of 6 traffic lights
  • traffic was both light & accomodating (not as much of an issue with this acceleration technique)
Details: (click to zoom)



The tank MPG of course will change substantially between now and next fill-up (a highway trip coming up on Friday will pull it down to the mid/high 60's, I predict).

I've been recharging my battery with a combination of grid/solar. (I have a 15W panel that fits nicely on my cargo shelf, and gets 3-4 hours of good sun (when it shines) in my usual parking spot.

I was going to replace the starting battery with one of my deep cycle batts, but the one I have is too tall for the amount of space under the hood. I'm working on an alternative. It's not good for a starting battery to do a lot of discharge/recharge cycles to the depth I'm going without the alternator.

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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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