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Old 07-23-2009, 10:35 AM   #4 (permalink)
Old Tele man
...beats walking...
 
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Join Date: Jul 2009
Location: Tucson, AZ
Posts: 3,034

Vibe - '09 Vibe Base (2ZR-FE)
90 day: 32.85 mpg (US)

Goldie Locks - '011 Cruze LTZ
90 day: 28.75 mpg (US)
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...nada! I'm already aware that WEIGHT = FE loss, to the tune of about 1-2% per every 100 pounds (from EPA data).

...for those interested in *where* the EPA got this number, here's the basic equation:

(w1/w2)^0.72 = (mpg2/mpg1)
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2011 Chevrolet Cruze LTZ 1.4LT 6A
2009 Pontiac Vibe 1.8L/SIDI 4A
2004 Pontiac Vibe 1.8L/MFI 4A
2003 Ford Focus ZX5 2.0L/Zetec 4A

1971 Dodge Charger 318 3A
1970½ Plymouth AAR 'Cuda 340/6BBL 4M
1968 Dodge Charger 383 3A
1967 Plymouth Barracuda Formula S 383 4M
1965 Plymouth Barracuda Formula S 273 4M
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