Mack Vision Performance and Fuel Consumption

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It's a class "8" commercial vehicle fuel consumption varies depending upon load weight, driving conditions, the number of wheels in the configuration and the type trailers used. A livestock hauling trailer is like pulling a parachute behind while a flatbed hauling insulation panels is feather weight, tankers maintain in windy conditions but air getting caught up under pulls hard. That said figure with a 76,000 lb load (the average) over flat terrain or rolling prairie with favorable winds about 7.3-7.8mpg probable; with unfavorable winds about 6.0. In stop and go city or hilly rural conditions about 6.0-6.6mpg. In mountainous or very hilly terrain expect fuel consumption to decrease. Idling uses about 1-2 gallons per/hour.