I would imagine you will not get very good MPG if you drive alot.
I drive 17 miles to work, no highway and get in the 10 mpg with my 04 QC 1500 4x4 with 86,000 on it. Best I got was 14 on the highway.
3.92's, 305/45-22, K&N, cat back, old tuner from 2004.
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