Why does the car make a clunking sound when driving at low speed?

[MariaDella]

Here are the reasons why the car makes a clunking sound when driving at low speed: 1. Foreign objects: It can be basically confirmed that there are relatively large foreign objects stuck in the tire tread. Small stones trapped in the tire tread will produce a rhythmic sound when in contact with the ground. The frequency increases with the speed, but the sound remains unchanged. 2. Lack of lubrication oil in the car: When the engine lacks oil or the oil's effectiveness decreases, if it is not replenished in time, it will lead to insufficient tension, timing chain jumping, increased fuel consumption, bearing wear, piston deformation causing poor sealing, and power loss. Engine damage and other issues may occur. It is often said that engine oil, as the lifeblood of the engine, plays a crucial role. In addition to regular maintenance and replacement, you can also check it frequently, especially before traveling. If the oil level is too low, it should be replaced in time to avoid significant losses.