How Many Kilometers Should a New Car Typically Drive Before Replacing Spark Plugs?
2 Answers
New car spark plug replacement intervals by mileage: 1. Copper-nickel alloy spark plugs typically require replacement every 30,000 to 50,000 kilometers; 2. Platinum spark plugs with superior electrode material should be replaced every 60,000 to 80,000 kilometers; 3. Iridium spark plugs have a service life of approximately 100,000 kilometers. The function of spark plugs is to discharge the high-voltage pulses delivered by the ignition wires, creating an electrical arc that ignites the air-fuel mixture in the combustion chamber by breaking down the air gap between the electrodes. Spark plugs serve to introduce tens of thousands of volts into the combustion chamber, generating sparks to ignite the air-fuel mixture. Working in conjunction with the ignition system and fuel delivery system, they significantly influence engine performance.
I've been driving for twenty years and have purchased several new cars. Spark plug replacement really depends on the specific vehicle model and driving habits. In the past, older cars required replacement every 20,000 to 30,000 kilometers. With advanced technology nowadays, the manual for my newly purchased car states replacement at 60,000 kilometers. However, I suggest being flexible in actual driving situations. For example, if you're often stuck in city traffic with the engine frequently idling, spark plug wear accelerates, possibly necessitating replacement at 50,000 kilometers. If you do more highway driving, you might extend it to 70,000 kilometers. It's best to replace spark plugs before symptoms like engine shaking or ignition difficulties appear, as this protects other components. During routine maintenance, I always have the mechanic check the spark plugs' condition—being proactive is more cost-effective than major repairs.
