Is it necessary to replace the Q5L spark plugs at 20,000 kilometers?

[ColemanLynn]

Spark plugs are generally recommended to be replaced at 30,000 kilometers. Below is an introduction to the types and lifespan of spark plugs: 1. Conventional spark plugs: Lifespan is 40,000 kilometers. It is recommended not to exceed 40,000 kilometers, otherwise the ignition efficiency will decrease, leading to a reduction in engine power. 2. Single platinum spark plugs: Lifespan is 50,000-80,000 kilometers. They require regular replacement. Signs of performance degradation include normal anode, cathode erosion, and changes in the ignition gap. 3. Iridium spark plugs: Lifespan is 50,000 kilometers. Performance degradation is characterized by cathode erosion, resulting in changes to the ignition gap and reduced stability. 4. Iridium-platinum spark plugs: Lifespan is 80,000-100,000 kilometers. Performance degradation typically manifests as aging of the ceramic insulation, leading to air leakage, reduced cylinder pressure, insufficient power, increased fuel consumption, and further decline in efficiency. 5. Double iridium spark plugs: Theoretically, their lifespan exceeds 100,000 kilometers. They are currently the best-performing spark plugs, featuring rapid ignition, strong power, and a long lifespan.