You are driving a motor vehicle with a manual gearbox. What is the logical thing to do so that the cruise control system can contribute to a fuel-efficient driving style?

Selecting the right gear in a vehicle with a manual gearbox allows the cruise control system to maintain a steady and fuel-efficient speed. The correct gear ensures the engine runs at an optimal RPM, reducing fuel consumption. Using cruise control helps avoid unnecessary acceleration and deceleration, promoting smoother driving. Conversely, using cruise control in stop-and-go traffic or accelerating early on inclines can increase fuel use or reduce control. Therefore, managing the proper gear is key for cruise control to support economical driving.