Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - How accurate are are factory/OEM MPG fuel economy gauges ?

FXSTi · 02-08-2012, 02:59 PM

My Fiesta can vary by +/- 2 mpg over a tank. When coasting engine off, it does not continue to keep track. My most recent fuel up (today) was 49.18 mpg calculated but the fcd showed 27ish.

Kirk

02-08-2012, 02:59 PM	#12 (permalink)
FXSTi EcoModding Apprentice Join Date: Aug 2011 Location: Michigan Posts: 238 Grasshopper - '11 Ford Fiesta SES Team Ford 90 day: 50.37 mpg (US) Feejer - '09 Yamaha FJR1300 AE Motorcycle 90 day: 42.73 mpg (US) Thanks: 68 Thanked 35 Times in 27 Posts	My Fiesta can vary by +/- 2 mpg over a tank. When coasting engine off, it does not continue to keep track. My most recent fuel up (today) was 49.18 mpg calculated but the fcd showed 27ish. Kirk __________________