Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Using Google Earth to measure odometer accuracy

MetroMPG · 07-10-2011, 11:39 PM

And I did borrow a GPS. It was very close to the car's odo:

30 km indicated
29.85 km GPS

That means the odo is over-reporting distance traveled by 0.5% compared to the GPS.

And this single comparison to the Google Earth Method (TM) shows it's very close (and seems to confirm the measurement will be short if there are lots of -- or big -- elevation changes on the measured route).

07-10-2011, 11:39 PM	#10 (permalink)
MetroMPG Batman Junior 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	And I did borrow a GPS. It was very close to the car's odo: 30 km indicated 29.85 km GPS That means the odo is over-reporting distance traveled by 0.5% compared to the GPS. And this single comparison to the Google Earth Method (TM) shows it's very close (and seems to confirm the measurement will be short if there are lots of -- or big -- elevation changes on the measured route). __________________ 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