View Single Post
Old 02-10-2008, 11:53 PM   #2 (permalink)
Batman Junior
MetroMPG's Avatar
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)
Thanks: 3,529
Thanked 6,324 Times in 3,271 Posts
Originally Posted by mattW View Post
However that experiment didn't take into account the alternator load which I think is the most important factor for this to be worth while.
How do you figure? I'm pretty sure the car's alternator was connected during the test. Maybe I'm misunderstanding your point.

Personally, I have found that I get worse FE when turning off the engine whenever I can compared to using engine-breaking in high gear so the fuel injectors shut out
But that doesn't make sense. In both cases (fuel cut-off state in top gear vs. engine-off in neutral) the engine is using no fuel. Yet you'll travel a shorter distance when engine braking in top gear than you will in neutral with the engine off. Whichever method takes you farthest in either case will yield maximum fuel economy overall.
Latest mods: 3-cylinder Mitsubishi Mirage. EcoMods now in progress...
Ecodriving test:
Manual vs. automatic transmission MPG showdown

has launched a forum for the efficient new Mitsubishi Mirage - fuel efficiency info for Geo Metro owners - electric car conversion on a beer budget
  Reply With Quote