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Old 07-17-2009, 09:34 AM   #1 (permalink)
UltraJosua
EcoModding Lurker
 
Join Date: May 2009
Location: Quebec, Canada
Posts: 7

Imperial Blue - '10 Chevrolet Cobalt LT
90 day: 23.67 mpg (US)
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Lower RPM for higher MPG?

Hi everyone,

First time as a poster, but i've been looking around for quite a few month... well ever since I bought my new truck, a Jeep Wrangler 2004.

I know that it's a brick and that it isn't made to be fuel efficient, but I can have a dream if I want to

Well anyway, I just found something yesterday that made me think about my driving habit.

Help and Tech Articles | Interco Tire

With this information here, I compared myself with the graphic.

Usualy, on city road I get to my highest gear possible with the lowest rpm possible, which is 5th gear at 1100 rpm, I acheive 35 mph easily. I usualy shift at about 2000rpm

On the Highway I get 60 mph at 2100 rpm in fifth gear.

Now I'm wondering, Am I driving in a rpm not high enough so much that I'm wasting fuel somewhere?
With those rpm, will I get higher MPG in town?

Still quite confused here...

Could someone point me the light with his infinite knowledge of car mechanics


-Josua

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