Does Cruising Save Fuel?

Generally speaking, yes. Cruise control can help you become more fuel-efficient and can help you save an average of 7-14% on gas thanks to its ability to maintain a continuous speed. In comparison, the constant change in acceleration and deceleration of the driver placing their foot over the pedals can eat more gas.

How much fuel does cruise control save?

It can lower your gas mileage by roughly 15% to 30% at highway speeds.” The site is even less specific about cruise control: “Using cruise control on the highway helps you maintain a constant speed and, in most cases, will save gas.”

Does cruise control slow down your car?

How does cruise control actually control the car's speed? ... But, in both scenarios the system is designed to increase or decrease the engine's power, which speeds up or slows the car down. The cruise control doesn't usually touch the car's brakes, it works on the throttle only.