BMW 750Li experiences rough idle and sensation of being bumped from behind when stopping, potential spark plug issue on BMW 750Li

Some BMW 750Li owners report experiencing rough idle and a sensation of being bumped from behind when stopping, which may indicate potential spark plug issues. Symptoms associated with spark plug problems include uneven engine operation at low speeds, vibrations, hesitation or stalling, a drop in engine power, and the illumination of the Check Engine Light. To diagnose these issues, owners are advised to inspect the spark plugs for signs of fouling or damage, as misfires from faulty spark plugs can lead to unburned fuel confusing the O2 sensors, resulting in a rough idle. Additionally, some owners experience rough idling after changing spark plugs, which can be attributed to incorrect installation or other underlying issues. Accurately diagnosing the problem is crucial to avoid unnecessary expenses and to address the root cause of the rough idle. If spark plug issues are suspected, it is recommended to inspect the spark plugs and seek professional assistance for proper diagnosis and resolution.