HillsideResidentEVChoice2
2026-07-17
The shortened lifespan of spark plugs is mainly influenced by material quality, operating conditions, and maintenance practices. Nickel alloy spark plugs typically require replacement every 20,000 kilometres, whereas platinum and iridium variants can last up to 80,000 kilometres and over 60,000 kilometres respectively, though actual service life varies according to engine type and operating conditions. Direct-injection turbocharged engines may necessitate earlier replacement at 20,000-40,000 kilometres due to their higher ignition frequency. Inferior fuel quality can lead to carbon buildup on electrodes, diminishing ignition efficiency, while prolonged low-speed operation or frequent short-distance commuting accelerates electrode wear. Immediate inspection is warranted when encountering cold-start difficulties, idle roughness, or a fuel consumption increase exceeding 10%. Regular inspection of electrode gap (standard 0.8-1.1mm), use of OEM-specified heat range spark plugs, and premium-grade fuel from certified stations can prolong service life by 20%-30%. Should black exhaust smoke appear or electrode gaps exceed 1.5mm, concurrent examination of the oxygen sensor and fuel system is advised to prevent secondary damage to the catalytic converter.
