How long spark plugs last varies with different cars and different types of spark plugs. Older cars often had to have their spark plugs replaced every 5,000 to 10,000 miles, while some newer cars — ...

We have all seen the marketing: "160,000 km Spark Plugs!" It is a tempting promise—the idea that you can buy a set of plugs, install them, and essentially forget about your ignition system for the ...

Spark plug lifespan depends on the electrode material. Copper plugs last 20,000 to 30,000 miles, platinum plugs last around 60,000 miles, and iridium plugs last 80,000 to 100,000 miles. Worn plugs ...