Normally, a car should run smoothly without significant shaking during operation. If you can clearly feel noticeable shaking, you can still continue driving as long as the warning light is not on, but you should drive at a lower speed and promptly take the car to a repair shop to diagnose the cause of the shaking. However, if the car shakes violently, produces unusual noises, and the warning light is on, you should immediately stop and call for assistance. Below are specific reasons for car shaking: 1. Engine Shaking: Issues such as carbon buildup, misfiring cylinders, or engine knocking can cause the engine to shake, leading to body vibration. When checking for engine-related shaking, also inspect the condition of the engine mounts, as one of their functions is to reduce the transmission of engine vibrations to the car body. 2. Brake Shaking: Brake shaking is often caused by grooved brake discs. You can feel obvious unevenness by touching the surface of the brake disc, and in severe cases, the edges of the brake disc may protrude significantly. Depending on the thickness of the brake disc, you can choose to machine it or replace it with a new one. 3. Gear Shift Shaking: Gear shift shaking may result from severely worn clutch plates or insufficient clamping pressure. This type of shaking caused by clutch issues is not noticeable during steady driving but becomes apparent during gear shifts or rapid acceleration. 4. High-Speed Shaking: High-speed shaking could be due to improper wheel balancing or abnormal tire wear. Wheel balancing refers to the even distribution of mass around the wheel's circumference; otherwise, the wheel will shake severely at high speeds. If the tire surface exhibits wave-like abnormal wear, it will not only cause shaking but also produce significant tire noise while driving.
