How many kilometers should car spark plugs be replaced?
2 Answers
Ordinary copper-core spark plugs in cars should be replaced approximately every 30,000 kilometers; precious metal spark plugs should be replaced approximately every 80,000 kilometers. Strictly speaking, there is no uniform standard answer for how many kilometers car spark plugs need to be replaced, as many objective factors can influence the replacement interval. For example, the driver's habits, usual driving conditions, differences in car models, variations in brands, and the quality of the spark plugs can all significantly affect the replacement time. If the driver's habits are more aggressive and the usual driving conditions are very harsh, the replacement interval should be reduced accordingly. Spark plugs are generally divided into two types: ordinary copper-core spark plugs and precious metal spark plugs.
I've been driving for several years, and the replacement interval for spark plugs varies by vehicle. Generally, the manual recommends replacing copper spark plugs every 30,000 to 50,000 kilometers. My previous old car required replacements every 40,000 kilometers, while my current new car uses platinum spark plugs that can last up to 60,000 kilometers. If you drive less, say under 10,000 kilometers a year, you can stretch the replacement interval to every 3 years. However, frequent stop-and-go city driving causes faster wear, so it's best to inspect them earlier. Key symptoms to watch for include sluggish acceleration, longer starting times, or a sudden increase in fuel consumption—these are clear signals. Ignoring them not only wastes fuel but can also damage the engine and even lead to stalling risks. A cost-effective and worry-free approach is to invest in higher-quality spark plugs; they may be pricier but are more durable and economical in the long run. Personally, I have the technician check the spark plug condition during my annual maintenance—safety first.
