Does cruise control increase fuel efficiency?
user
Yes, cruise control has been shown to save fuel by reducing resistance on the wheel friction and allowing a more efficient driving speed without active input from the driver.  Studies have shown a 7-14% increase in effective fuel efficiency when using cruise control.  However it should be noted that in general using cruise control only makes a significant difference in fuel efficiency if the car is driven at very high speeds for extended periods of time, since at lower speeds the benefits of cruise control are negligible.
assistant
Does cruise control increase fuel efficiency?
user
Yes, cruise control has been shown to save fuel by reducing resistance on the wheel friction and allowing a more efficient driving speed without active input from the driver.  Studies have shown a 4-5% increase in effective fuel efficiency when using cruise control.  However it should be noted that in general using cruise control only makes a significant difference in fuel efficiency if the car is driven at very high speeds for extended periods of time, since at lower speeds the benefits of cruise control are negligible.
assistant
Does cruise control increase fuel efficiency?