Thread: I got 32.2 MPG!
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Old 08-03-2013, 12:10 PM   #5
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Join Date: Jun 2007
Vehicle: 2007 GT
Location: PA to KY ('07) to IL ('09) to MS ('10) to FL ('11)
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Originally Posted by outceltj View Post
Is that from the inboard computer or hand calculated

Although there are a few of the 05 thru 10 onboards that are pretty accurate, the vast majority are off by 1-2 MPG (high). There was a lot of input on this from the forum members over the past few years. Unless you hand calculate, at least for the first 50-100 fill-ups, AND reset the onboard at each fill-up you haven't a clue what your actual fuel mileage is.

My '07 GT is off by 1.5-2 MPG.
My '08 Toyota SUV is off by 2-2.5 MPG.
My wife's '06 V6 Pony is off by about 0.2 MPG

As long as you're cruising in the sweet spot (which is often around 1500-1800 RPM), fuel mileage can be awesome.
07 GT Prem: Alloy, MT, 3.55's, Steeda CAI w/Brenspeed tunes, FRPP Stingers, 275/40/18 Goodyear Eagle F1 A/S on SVT Cobras (OE GT500's), 14" shorty, Wheelskin side scoops & qtr window louvers, A-H rear window louvers, SHR honeycomb blackout panel, Sequentials, Hella Optilux Extreme XY fogs, Silverstars
06 V6: Legend Lime, Pony Package, 14" shorty, Sequentials, Hella Optilux Extreme XY fogs, Silverstars
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