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Old 06-06-2007, 06:40 AM   #1
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Chevy Cobalt

Any hypermiler blogs for Chevy Cobalts?
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Old 06-06-2007, 09:59 AM   #2
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The automatic(most are automatic) in them shifts like water. So so mileage for a 4cyl with an average driver. I like the S series saturn over them. Better mileage out of the box.

But I too would still like to here someone hypermiling one.
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Old 07-01-2008, 04:34 PM   #3
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I have a 2007 chevy cobalt, and am getting 28mpg / city & 40mpg / hwy. Is that pretty good , with no mods?
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Old 07-01-2008, 04:48 PM   #4
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I recently purchased a 2008 Cobalt XFE coupe. The XFE options are standard on cars with the base engine with manual trannies, and include LRR tires and (allegedly) different engine tuning to produce 25-29-36 rated FE. I'm in the middle of making my way through a baseline tank to measure future FE performance, but so far, I'm averaging right around 40 mpg (at 30/70 city/hwy), according to the car's built-in FE gauge (it also has instant mpg and tire pressure readouts...pretty handy, though I still plan to install a Scangauge). Very pleased with it so far, and looking forward to better results as the engine breaks in.

EDIT - I wouldn't call myself much of a hypermiler, but I do keep the tires overinflated (40 psi) and keep the speed down with coasting (engine on) when feasible.
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Old 07-01-2008, 05:10 PM   #5
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Quote:
Originally Posted by ccbarnett View Post
(at 30/70 city/hwy)
Is that a typo? If not, that car sounds like I designed it, with torque and tall gears...how many RPM at 70mph?
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Old 07-01-2008, 05:34 PM   #6
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Quote:
Originally Posted by cobalt4now View Post
I have a 2007 chevy cobalt, and am getting 28mpg / city & 40mpg / hwy. Is that pretty good , with no mods?
What do you get when you calculate a tank of gas form fill up to fill up??
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Old 07-01-2008, 07:20 PM   #7
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Quote:
Originally Posted by theholycow View Post
Is that a typo? If not, that car sounds like I designed it, with torque and tall gears...how many RPM at 70mph?
Just to be clear, I'm talking about 30% city driving, 70% highway. I'm not sure about the RPM at 70mph, because I don't generally cruise at that speed. It sits at about 2100 RPM or so at 60 mph. I'll be able to get some more useful stats after I get the Scangauge.
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Old 07-02-2008, 06:38 AM   #8
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The XFE's are claimed to have taller gearing than other models:

http://www.freep.com/apps/pbcs.dll/a...014/BUSINESS01

"To get the improvement, GM engineers revised the cars' engine calibrations, changed their final-drive ratio and switched to low rolling-resistance tires."
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