View Single Post
Old 08-25-2008, 10:45 PM   #2 (permalink)
Batman Junior
MetroMPG's Avatar
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 21,807

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: 3,516
Thanked 6,307 Times in 3,264 Posts
Originally Posted by mar5ka View Post
Trying to figure out what happened, my mileage was worse with my grill blocked anyone have any idea's

- possibly faulty "test" methodology (what are you comparing it to? Identical speed & route? Identical weather & traffic conditions?)

- blocked too much, so your electric fan was running a lot more (significant electrical load)

- blocked too much, IAT's were elevated enough to cause timing to back down and lost efficiency

Also I found if I remove my passanger mirror there is a lot more wind noise
What did you use to cover the hole with? Possibly it had less acoustic insulation than when the mirror was in place. The A pillar vortex can make a lot of noise.

Some people will refer to a mythical Chevy Caprice which supposedly had a better Cd with the mirrors ON, but I'm doubtful that any car wouldn't benefit from a passenger mirror delete.
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