What should be monitored to ensure vehicles are effectively maintained?

Monitoring daily functions such as brakes and lights is crucial for ensuring vehicles are effectively maintained. These components are essential for safe operation and help prevent accidents. Regular checks of the braking system ensure that the vehicle can stop adequately, while functioning lights are necessary for visibility and communication with other road users.

Focusing on just the interior cleanliness would not provide any insight into the vehicle’s operational safety or functionality. Monitoring mileage alone, while helpful for scheduling services, does not cover the comprehensive needs of vehicle maintenance, such as the mechanical and safety components. Additionally, checking only the engine's performance neglects other vital areas that contribute to the overall safety and operational efficiency of the vehicle. Hence, daily monitoring of essential functions like brakes and lights represents a proactive approach to vehicle maintenance.