How Long Can the Original Spark Plugs Last?

[LeilaniAnn]

There is no fixed standard for how long the original spark plugs can last, and it cannot be determined by years. Generally, the lifespan of spark plugs is judged by the mileage driven. When the car reaches a certain mileage, the spark plugs need to be replaced. Original spark plugs typically last around 30,000 kilometers. The replacement mileage varies depending on the material of the spark plugs: ordinary copper-core spark plugs should be replaced at 30,000 kilometers; yttrium spark plugs at 50,000 kilometers; platinum spark plugs at 80,000 kilometers; iridium spark plugs at 100,000 kilometers; and platinum-iridium alloy spark plugs at 120,000 kilometers.