Does vehicle speed affect fuel consumption?
Does vehicle speed affect fuel consumption? Speeding increases fuel consumption and decreases fuel economy as a result of tire rolling resistance and air resistance. Reducing your speed by 5 to 10 mph can improve fuel economy by 7%–14%. Using cruise control on the highway can help drivers maintain a constant speed; vehicles use the most energy when accelerating. Do you waste more gas going 60 mph than 30 mph? Avoid Speeding You can improve your gas mileage 10 – 15% by driving at 55mph rather than 65mph (104km/h). Natural Resources Canada puts the “sweet spot” for most cars, trucks, and...