How often should the spark plugs of a 1.6L New Sagitar be replaced?

[DelBeau]

1.6L New Sagitar spark plugs should be replaced approximately every 40,000 kilometers, with the exact replacement interval depending on usage conditions. Here are the detailed explanations: Methods to determine if spark plugs need replacement: Remove the spark plugs and observe the color of the burn, the gap of the electrodes, and whether there is any air leakage between the ceramic body and the metal shell. If you notice that the car is difficult to start when cold, experiences obvious jerking while driving, idles roughly, or shows decreased engine acceleration performance, the spark plugs should be inspected and replaced promptly. Replacement cycles for different types of spark plugs: The lifespan of a resistor spark plug is 20,000 kilometers, a platinum spark plug lasts 40,000 kilometers, while an iridium spark plug can last between 60,000 to 80,000 kilometers.