Forum Discussion
Tystevens
Nov 18, 2014Explorer
Can't speak for APT, but our '05 Suburban (5.3/4 spd/4.10) was in the 17-18 range on the freeway. I don't think it ever broke 19 mpg, even on slower 2-lane road trips. Our '10 Suburban (5.3/6 spd/3.42) is always above 19 mpg on a freeway trip, and has done as well as 21.5 mpg under the right circumstances.
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