What Causes High-Speed Body Vibration in BMW 5 Series?

[OAlexa]

Reasons for BMW 5 Series vibration include: 1. Excessive Carbon Deposits: Severe carbon buildup in the engine cylinders can lead to spark plug blockage and valve clogging, directly causing vehicle vibration during idling; 2. Fuel Supply System Malfunction: Unstable fuel pressure can easily result in inconsistent air-fuel mixture concentration, not only causing vibration but also leading to unstable idling; 3. Aging Engine Mounts: This is also a very common cause of vibration. If the vehicle's engine vibration becomes increasingly severe without a corresponding loss of power, it may be due to worn engine mounts; 4. Misfiring Cylinder: This is the most common cause of engine vibration. The issue lies with the engine ignition coil or spark plugs. If the ignition coil malfunctions or the spark plugs fail to fire for some reason, the vehicle will experience vibration.