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Originally Posted by Hummer23
I have the adventure model, and I average 18 mpg all day long. I do not check miliage with every tank, but I have checked 4 or 5 tanks and it averages 18 everytime. That is mostly highway, and little traffic.
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Wow 18mpg, must be some slow highway speeds. Takes more self-restraint than I have to drive that slow. I've only seen 18 mpg once in 29000 miles of driving my H3. But freeway speeds in much of California are 75-90 mph.