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What is the best material for spark plugs?

3 Answers
LeSamuel
08/31/25 6:41am
Iridium-platinum spark plugs are the best. Spark plug replacement cycle: Under normal maintenance conditions, they should be replaced after driving 40,000 to 60,000 kilometers. However, this may vary depending on the brand and engine. It is recommended to follow the user manual. The following standards can be referenced for maintenance 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. What are the effects of a faulty spark plug: If a spark plug is damaged, it can directly cause issues such as leakage in the vehicle's ignition system, increased fuel consumption, and reduced power. The most significant problem is difficulty in ignition, affecting the normal use of the vehicle. Severe erosion of the spark plug, scarring or damage at the top of the spark plug, or melted and eroded electrodes all indicate that the spark plug is damaged and should be replaced.
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EzraAnn
09/13/25 3:04am
As a car enthusiast who frequently works on vehicle repairs, the choice of spark plug material is quite crucial. Common materials on the market include copper core, nickel alloy, platinum, and iridium, with iridium generally considered the best. Why? Because it has a long lifespan, typically lasting over 100,000 kilometers, and offers superior ignition performance—producing a fine and stable spark that ensures more complete engine combustion and lower fuel consumption. In contrast, copper core plugs are inexpensive but wear out quickly, needing replacement every 30,000 kilometers or so. Nickel alloy plugs are a middle-ground option but don’t match iridium’s performance. Platinum plugs are also durable but more expensive, making them suitable for high-end vehicles. Remember, the material should match your car type—platinum is fine for older or regular family cars, while iridium is the top choice for newer models or performance-driven vehicles. Don’t forget to check and maintain your spark plugs regularly, as neglecting them can affect power and emissions. Safety first!
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DelEdward
10/27/25 3:49am
I'm a car enthusiast and have been driving modified cars for years. The material of the spark plugs directly affects the engine's performance! The best is definitely iridium—it ignites super fast, quicker than lightning, making the engine more responsive with no lag during starts or acceleration. Copper or nickel materials are cheaper but ignite slower and are prone to carbon buildup. Platinum is decent, a mid-tier option, but iridium is overall more reliable and heat-resistant, perfect for long drives. I recommend checking your car's manual for the manufacturer's recommendation—matching the original specs is the safest bet. After upgrading the material, I also noticed my car became more fuel-efficient and had cleaner emissions, which is great for the environment. Maintenance-wise, iridium spark plugs can last five to six years without issues, saving both hassle and money. In short, investing a little extra in high-quality spark plugs makes your car feel like it's on steroids.
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