How many kilometers should the timing belt of Volkswagen 1.4T be replaced?

[AlejandroAnn]

Three years or 50,000 kilometers. The time for new cars can be appropriately extended. The timing belt is an important part of the engine's valve system, ensuring the accuracy of intake and exhaust timing by connecting with the crankshaft and matching a certain transmission ratio. The reason for using a belt instead of gears for transmission is that the belt has less noise, smaller self-variation, and is easier to compensate. Obviously, the lifespan of the belt is definitely shorter than that of metal gears, so it needs to be replaced regularly. Extended information: When the timing belt breaks, if the belt is stuck, the valve stops in the open state, and the engine stops running; if the engine is idling when it breaks, it means there is a gap between the piston at the top of the stroke and the open valve. In these two cases of breakage, only the timing belt itself is damaged. However, if the engine is designed with "interference fit," where the piston and valve occupy the same space without any gap between them, other components will be damaged quickly, such as bent valves and impacted pistons.