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Old 05-25-2009, 10:40 AM   #10 (permalink)
stevey_frac
EcoModding Apprentice
 
Join Date: Jun 2008
Location: Cambridge, ON
Posts: 240

Jalilah - '07 Chevrolet Cobalt LT
90 day: 40.57 mpg (US)
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Interesting reads. Looks like no one has done it though. From everything i can tell, the transmissions are the same, but the XFE has a taller final drive ratio. That means the difference is in the differential, and shortly thereafter i'm out of my league. I wish it was a simple as the Saturn fifth gear swap.

I do believe that it is more of a difference then 50 RPM at 60 MPH. The car i drove was very agressively taller geared when I was car shopping.
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