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MetroMPG · 02-19-2009, 12:29 PM

WOW. Filled up this week and got a nasty surprise.

I thought I was in store for about a 65 mpg tank according to the ScanGauge, but the fuel receipt/odometer calcs were substantially worse: 55.9 mpg (US) / 4.2 l/100 km / 67.1 mpg (Imp).

The last time I had fuel economy that bad was nearly 3 years ago.

The SG somehow overestimated distance by 34 miles (of 521.8 actual), and underestimated fuel use by 0.83 gallons (US).

Need to recheck my calibration offsets.

02-19-2009, 12:29 PM	#1 (permalink)
MetroMPG Batman Junior Join Date: Nov 2007 Location: 1000 Islands, Ontario, Canada Posts: 22,534 Blackfly - '98 Geo Metro Team Metro Last 3: 70.09 mpg (US) MPGiata - '90 Mazda Miata 90 day: 54.46 mpg (US) Appliance car Mirage - '14 Mitsubishi Mirage ES (base) 90 day: 57.73 mpg (US) Thanks: 4,082 Thanked 6,979 Times in 3,614 Posts	Worst personal MPG in almost 3 years WOW. Filled up this week and got a nasty surprise. I thought I was in store for about a 65 mpg tank according to the ScanGauge, but the fuel receipt/odometer calcs were substantially worse: 55.9 mpg (US) / 4.2 l/100 km / 67.1 mpg (Imp). The last time I had fuel economy that bad was nearly 3 years ago. The SG somehow overestimated distance by 34 miles (of 521.8 actual), and underestimated fuel use by 0.83 gallons (US). Need to recheck my calibration offsets. __________________ 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