Sedan owners benefit from a generally better fuel consumption across the board. Moreover, they can adjust their speed to values close to the optimum without hindering the flow of traffic significantly. A speed reduction from 75 down to 60 mph will yield 25% in fuel savings – nothing to sneeze at!
Driving your truck at 25 mph on a highway is only an option when the flow of traffic allows for it. Still, due to trucks’ abysmal overall fuel consumption, owners of such vehicles benefit the most from a reduction in highway speed. For instance, a Ford F-150 will gain 7 mpg when slowing down from 75 to 60 mph. This is equivalent to approximately 35% in fuel savings!
