View Single Post
Old 12-16-2020, 02:18 PM   #11 (permalink)
MetroMPG
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,530

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

MPGiata - '90 Mazda Miata
90 day: 54.46 mpg (US)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
90 day: 70.75 mpg (US)

Appliance car Mirage - '14 Mitsubishi Mirage ES (base)
90 day: 62.14 mpg (US)
Thanks: 4,078
Thanked 6,978 Times in 3,613 Posts
gauge accuracy

Quote:
Originally Posted by 2016 Versa View Post
I wouldn't trust the factory mileage readout. The one in my Versa is always about 4-6 MPG optimistic.
Just FYI:

I've done 10 fill-ups in several Mirages, comparing the volume/distance calcs against the factory computer.

Results showed the factory gauge was optimistic in a range at the extremes from 1% to 9%, which equates to ~0.6 to ~5.4 MPG (US).

But most of the fills were around 4.5% optimistic, or ~2.7 MPG on the gauge. (Also FYI, I always fill the car using the same number of clicks when full, and often use the same pump at the same station.)

Smallie - I'm sure you know the car has 2 factory MPG gauges, right?



The default "A" gauge auto-resets after 4 hours of inactivity; the "B" gauge is user-resettable (good for monitoring tank MPG). Unfortunately "B" is buried in a stupidly designed user interface. (Search for the "B" gauge thread on the Mirage forum... or RTFM )

__________________
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
The Following User Says Thank You to MetroMPG For This Useful Post:
smallie (12-17-2020)