How often should the spark plugs be replaced on a BMW X5?
2 Answers
BMW X5 spark plugs should be replaced every 30,000 to 50,000 kilometers. If not replaced for a long time, it can lead to decreased vehicle power and increased fuel consumption. The spark plug, commonly known as the sparking plug, functions by discharging the high-voltage pulse electricity sent from the high-voltage wire (spark plug wire), breaking down the air between the two electrodes of the spark plug to generate an electric spark, thereby igniting the mixed gas in the cylinder. The BMW X5 is a mid-to-large-sized SUV introduced by BMW, with dimensions of 4930mm in length, 2004mm in width, and 1776mm in height, and a wheelbase of 2975mm. It is equipped with two turbocharged engines: a 2.0T L4 and a 3.0T L6, paired with an 8-speed automatic transmission.
When driving my BMW X5, I usually replace the spark plugs every 70,000 kilometers or so, because last time when the mileage reached over 60,000 kilometers, I noticed the car's acceleration became sluggish and fuel consumption increased significantly. Worn-out spark plugs can lead to inefficient ignition, which over time causes severe engine carbon buildup and may even trigger the engine warning light. I recommend that owners start checking the ignition condition after driving 50,000 kilometers. If there's noticeable shaking or unusual noises during startup, it's time for a replacement. BMW engines are highly precise, and prolonged use of old spark plugs can also affect transmission logic and smoothness. Therefore, regular maintenance not only saves fuel but also extends the overall lifespan of the vehicle.
