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How many kilometers can spark plugs last?

4 Answers
DiEliza
07/30/25 1:00am

Under normal maintenance conditions, spark plugs can last for 40,000 to 60,000 kilometers. However, this may vary depending on the brand and engine type. It is recommended to follow the user manual for guidance. The following standards can be referenced for maintenance and replacement: Platinum spark plugs should be replaced at 40,000 kilometers, ordinary nickel alloy spark plugs at 20,000 kilometers, and iridium spark plugs at 60,000 to 80,000 kilometers. Steps for replacing spark plugs: Open the engine hood, lift the plastic cover of the engine, and remove the high-voltage ignition wires. Mark the position of each cylinder to avoid confusion. Use a spark plug socket to remove the spark plugs one by one. While removing them, check for any external debris like leaves or dust and ensure they are cleaned thoroughly. Place the new spark plugs into the spark plug holes, hand-tighten them a few turns, and then use the socket to tighten them further. Reinstall the high-voltage ignition wires in the firing order and secure the cover.

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DiJourney
08/15/25 6:30am

I've been driving for twenty years, and the lifespan of spark plugs is truly worth discussing. Standard copper spark plugs can last about 30,000 to 50,000 kilometers, but if you're often stuck in city traffic with frequent starts and stops, you might need to replace them after just over 20,000 kilometers. Once, I experienced severe shaking during acceleration—when I took it to the repair shop, the spark plugs were completely burnt out. After replacing them, the car ran smoothly immediately. Platinum or iridium spark plugs are much more durable; iridium ones from good brands can last over 100,000 kilometers, though they come at a slightly higher price. If you're budget-conscious, choose according to your needs. Worn-out spark plugs don’t just affect performance; they can also increase fuel consumption and even damage the engine. So, I recommend checking them every 40,000 kilometers or following the maintenance manual—don’t wait for symptoms to appear before taking action. This way, you’ll drive with greater peace of mind.

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StAmy
10/20/25 4:40am

Studying spark plugs is quite interesting! Regular ones have a shorter lifespan, typically around 30,000-50,000 kilometers, but switching to iridium ones can easily last over 100,000 kilometers, with added power and fuel savings. I've tried different materials—platinum ones are decent, lasting 60,000-80,000 kilometers. Choosing a spark plug depends on your driving habits: opt for long-life versions if you frequently drive long distances, while standard ones are fine for city driving. Worn-out spark plugs can cause sluggish acceleration, engine noises, or a spike in fuel consumption. Well-maintained spark plugs improve responsiveness and driving enjoyment, and regular replacements are affordable—definitely a worthwhile investment.

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VonPeyton
12/03/25 5:12am

For daily commuting vehicles, spark plugs are something to take seriously. Standard spark plugs should generally be replaced every 30,000 to 50,000 kilometers, while iridium ones are more durable. Symptoms include difficulty starting or a sudden increase in fuel consumption, and ignoring them can lead to engine shaking. It's recommended to check them during every 40,000-kilometer maintenance and replace them as needed. Worn-out spark plugs affect ignition efficiency and may cause major issues, so timely maintenance is crucial. Simply put, keeping up with this habit ensures your car runs smoothly and gives you peace of mind on the road.

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