Does Cruise Control Consume More Fuel?

1 Answers
DominicLee
07/24/25 7:57pm
Whether cruise control consumes more fuel depends on individual driving habits. The fuel consumption situation with cruise control is as follows: 1. On flat and straight highways without frequent deceleration, activating cruise control allows the vehicle's fuel injection and throttle opening to be controlled by the onboard computer, resulting in uniform fuel injection and speed, reducing unnecessary speed changes, which can achieve fuel-saving purposes. 2. On roads with heavy traffic or undulating terrain, cruise control does not save fuel but instead consumes more. For example, during uphill and downhill driving, speed changes occur, and cruise control will maintain fuel injection to return to the corresponding speed, increasing throttle opening, raising engine speed, and accelerating the vehicle faster, thus consuming more fuel.
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