How many kilometers should the Malibu XL spark plugs be replaced?

[LePeter]

The spark plugs of the Malibu XL should be replaced every 60,000 kilometers. Methods to determine if the spark plugs are damaged: Remove the spark plugs and observe them. The condition of the spark plugs can be judged based on their appearance and color. Normal spark plugs have a skirt and electrodes that appear gray-white, gray-yellow, or light brown. A properly functioning spark plug has a skirt that is reddish-brown, with an electrode gap between 0.8-0.9mm, and no signs of electrode burn. If the spark plugs are covered with oil or deposits but are not damaged, they can continue to be used after cleaning off the oil and deposits. If the spark plugs are severely damaged, showing signs such as blistering at the top, black streaks, cracks, or melted electrodes, the cause of the damage should be identified. After troubleshooting, replace the spark plugs with new ones. Additionally, if the spark plugs appear black as if smoked, it indicates that the wrong cold/hot type was selected or that the mixture is too rich, with oil seeping up.

[RileyLee]

When it comes to replacing the spark plugs for the Malibu XL, I've been driving this car for several years. According to the official manual recommendation, they generally need to be replaced around 60,000 kilometers. However, it depends on the specific model year and the type of spark plugs. For example, if the original ones are iridium, they can last over 80,000 kilometers. After I replaced mine at 70,000 kilometers, the car immediately felt much smoother, acceleration was no longer sluggish, and fuel consumption even dropped a bit. Don’t overlook this—worn-out spark plugs can cause difficulty starting or stalling, especially during cold starts in winter. If you frequently drive short distances or on dusty roads, spark plugs can accumulate carbon deposits faster, so it’s advisable to check them earlier. When replacing, it’s best to choose OEM or branded parts. Doing it yourself isn’t difficult and the cost is low—I usually finish in half an hour, saving on labor costs at the repair shop. Remember to have the technician check them during regular maintenance to ensure driving safety.

[SanJayce]

As someone who frequently works on DIY car maintenance, I've changed the spark plugs for my Malibu XL. My experience tells me that regular spark plugs typically need replacement every 30,000 to 50,000 kilometers, but the original spark plugs for the Malibu XL are often platinum or iridium, which can last 60,000 or even 100,000 kilometers. The first time I changed them, I bought the wrong model, and after installation, the car shook violently. It only returned to smooth operation after I installed the correct ones. If you often drive aggressively or frequently navigate congested city roads, the spark plugs will wear out faster. It's best to check the spark plug gap every 20,000 kilometers—if the gap is too wide or there's carbon buildup on the electrodes, replace them immediately. Doing it yourself is cost-effective, with a set of parts costing just a couple hundred yuan, but going to a professional shop can also save you hassle. After replacement, the car's performance noticeably improves, and fuel consumption becomes much more stable.

[DeKinsley]

For safety reasons, I always replace the spark plugs at 60,000 kilometers, which is also the standard for the Malibu XL. If spark plugs are left unchanged for too long, such as exceeding 80,000 kilometers, it may cause engine stalling or starting failure, which is very dangerous on highways. I once had them checked at 50,000 kilometers, and the technician said the gap was normal and suggested waiting a bit longer. But after replacing them at 60,000 kilometers, everything ran smoothly. Don’t neglect regular maintenance—spark plug issues often start subtly, but the accumulated damage can lead to more expensive repairs later. Timely replacement can prevent bigger troubles.