
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.

As someone who enjoys tinkering with cars, I believe the spark plug replacement interval for the BMW X5 is approximately between 60,000 to 80,000 kilometers, depending on driving habits. If you frequently drive short distances or in congested areas, the spark plugs wear out faster, and it's best to replace them every 60,000 kilometers. I've personally replaced them and found that iridium spark plugs are more durable and can save some money. During replacement, check for electrode erosion, clean carbon deposits, and avoid ignition issues that could lead to engine problems. Don't forget to consult the owner's manual to ensure compatibility with the engine model. Regular maintenance can help prevent costly overhauls.

From my personal experience, it's quite reliable to replace the spark plugs of a BMW X5 every 70,000 kilometers without delay. I once neglected this and waited until 80,000 kilometers to replace them, which resulted in a significant increase in fuel consumption and sluggish acceleration. Once spark plugs age, the risk of delayed or failed ignition increases, affecting the overall engine performance. Simply put, regular replacement doesn't cost much and ensures smooth driving. It's advisable to develop a maintenance habit.


