Vehicle maintenance describes the act of inspecting or testing the condition of vehicle subsystems (e.g., engine) and servicing or replacing parts and fluids. Regular maintenance is critical to ensure the safety, reliability, drivability, comfort and longevity of a vehicle. During preventive maintenance, a number of parts are replaced to avoid major damage or for safety reasons.
The actual schedule of vehicle maintenance varies depending on the year, make, and model of a vehicle, its driving conditions and driver behavior. Vehicle makers recommend the so-called extreme or the ideal service schedule based on impact parameters such as: