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Originally Posted by 3Hummer
Ihave an '07 as well and it got better for me after the break in i got about 13 during breakin and now im getting around 14.5 to 15 mpg on average and thats all suburban driving, havent taken my car to the highway yet, we use my moms car if were going somplace far that involves the highway!
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when did you get it, and what's your current mileage? TIA