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Old 10-28-2012, 08:52 PM   #1 (permalink)
MetroMPG
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Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
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Blackfly - '98 Geo Metro
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Last 3: 70.09 mpg (US)

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90 day: 54.46 mpg (US)

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

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Speed vs. MPG chart: 2002 Toyota Camry 2.4 auto (impressive highway MPG sleeper car?)



My parents have a 2002 Camry 2.4L 4-cylinder automatic.

I've never tested a car that gets such good highway MPG relative to its EPA rating. Can this car really beat its EPA highway rating at 75 mph?

Nearly 50 MPG when the torque converter locks in top gear? Amazing for such a big, gasoline car.




For reference, this car's EPA fuel economy ratings are:

EPA city: 21 mpg (US)
EPA highway: 29 mpg (US)
EPA combined: 24 mpg (US)

EPA "user average MPG" (22 users): 28.7 MPG

NRCan (Canadian) ratings:
City: 10.1 L/100 km (28 mpg Imp.)
Hwy: 6.9 L/100 km (41 mpg Imp.)

FYI, the ScanGauge was not calibrated to this car (by a fill-up), but I compared the SG to the car's onboard fuel economy display, and the SG read slightly worse than the factory gauge, which makes it more credible.

UPDATE: the SG was probably around 10% optimistic. See post #12 for details.

Weather conditions:

Oct 25, 2012
Sunny, 17 C
Wind SE 10 km/h (looked negligable at the test area on the water)
Pressure 101.7 kpa
Humidity 72%

Raw numbers:


km/h .... mph .... W MPGUS .... E MPGUS ... AVG. MPG (US) ... L/100 km

50 ... 31.1 ... 49 ... 51.1 ... 50.1 ... 4.7
60 ... 37.3 ... 48 ... 47.7 ... 47.9 ... 4.9
70 ... 43.5 ... 47.3 ... 51.9 ... 49.6 ... 4.7
80 ... 49.7 ... 47.4 ... 47 ... 47.2 ... 5.0
90 ... 55.9 ... 42.1 ... 41.8 ... 42.0 ... 5.6
100 .. 62.1 ... 37.1 ... 40.8 ... 39.0 ... 6.0
110 .. 68.4 ... 33.4 ... 33.5 ... 33.5 ... 7.0
120 .. 75 ......32.5 ... 32 ... 32.3 ... 7.3

Methodology:
Car was fully warmed up before the test.

Air conditioning was off, windows were up, headlights on.

Car was brought up to speed & leveled off before passing a "start" marker (road sign) where the computer was reset. Reading was taken after passing a "finish" marker.

Top gear/torque converter locks @ 70 km/h, so MPG reading taken at 72 km/h, to ensure it was locked.
Mods in place during test:
  • none
Route:
2 lane highway, straight, dry & level (follows river edge). The road runs SSW/NNE and can be found here: 1000 Islands Parkway - Google Maps . Test portion is 1.6 km / 1 mi in length.

Traffic conditions:
There was no traffic ahead in my lane; some traffic occasionally passed in the oncoming lane.
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See also: http://ecomodder.com/forum/showthrea...you-15182.html

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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
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www.MetroMPG.com - fuel efficiency info for Geo Metro owners
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