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A comment on How much does air pollution cost the U.S.?. Parent comment

Re:How much does air pollution cost the U.S.? by Balero on Tuesday October 08, 2019 @05:54PM (#21197705)
It takes less energy to accelerate less mass. So the lighter your vehicle the more fuel efficient it is for the same speed/acceleration.

Going a lower speed is also more fuel efficient (depending on the engine, but it takes less energy) as you have a lower air/road resistance.

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