Spark Plug Replacement Cycle and Influencing Factors
2025-11-10
Material determines the basic lifespan:
Nickel alloy: 20,000–30,000 kilometers.
Platinum/Iridium: 40,000–80,000 kilometers.
Dual iridium/ruthenium tips: Over 80,000 to 100,000 kilometers.
Engine type affects lifespan:
Turbocharged engines: Operate at high temperatures, reducing spark plug life by 30%-50%. Replacement is recommended every 20,000 to 40,000 kilometers.
Direct-injection engines: The air-fuel mixture burns more vigorously, requiring shorter replacement intervals.
Driving habits and the environment:
Frequent short trips/city congestion: Engines running at low speeds are prone to carbon buildup, so it's recommended to replace the parts 10%–20% earlier than usual.
Aggressive driving/high-altitude driving: Spark plug operating temperatures rise, accelerating wear.
Using low-quality gasoline: Incomplete combustion leads to carbon buildup, and can even cause electrode "poisoning."
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