How often should the engine belt of a motor vehicle be replaced?
2 Answers
The engine belt of a motor vehicle should be replaced every 2 years or after reaching a mileage of 60,000 kilometers. As a rubber product, the engine belt is prone to wear and aging with prolonged use. Therefore, manufacturers have strict requirements for replacing the engine belt and its accessories within the specified time frame. The engine belt connects to the crankshaft to ensure the accuracy of the engine's intake and exhaust timing. Compared to gears, the engine belt produces less noise and offers more precise transmission. The engine relies on the close coordination of the belt, which transfers kinetic energy to various components under the drive of the crankshaft, ensuring the stable operation of the engine system.
My car has already driven 120,000 kilometers, and I've replaced the engine belt twice. The first replacement was around 80,000 kilometers when the maintenance technician noticed cracks on the edges of the belt and recommended changing it. Actually, the replacement interval mainly depends on two factors: first, the intensity of vehicle usage—for someone like me who frequently drives long distances or often operates the car in high-temperature environments, the belt tends to age faster, possibly requiring inspection as early as 60,000 kilometers; second, the type of belt—if a timing belt breaks, the engine might be completely ruined, so it should be replaced more frequently than accessory belts. Manufacturer manuals usually suggest replacement between 60,000 to 100,000 kilometers, but it's better to start inspections every six months from 50,000 kilometers onward, having the technician listen for any squeaking sounds and check if the belt has hardened or started peeling. Never wait until it breaks to replace it—the cost of towing and repairs could cover the expense of several new belts.
