The Replacement Cycle Of A Car's Spark Plug Depends On The Material Of The Spark Plug

If it is an ordinary nickel alloy spark plug, it must be replaced after the car has traveled about 20,000 kilometers.
If it is a platinum spark plug, it needs to be replaced around 40,000 kilometers.
If the vehicle uses iridium spark plugs, they can be replaced every 60,000 to 80,000 kilometers. If the vehicle uses higher-grade iridium-platinum alloy spark plugs, the driving mileage can reach 120,000 kilometers.