When Should You Change Your Spark Plugs?

Spark plugs are small, but they are what actually ignites the fuel in your engine. When they wear out, you feel it in how the car runs and in what you spend at the pump.

Signs of worn spark plugs

• Rough idling or a shaky engine
• Trouble starting the car
• Hesitation or lost power when accelerating
• Worse fuel economy than usual
• A check engine light from a misfire

How often to replace them

It depends on the plug type. Older copper plugs may need changing around 30,000 miles, while modern iridium or platinum plugs can last 60,000 to 100,000 miles. Your owner’s manual has the specific interval for your car.

Fresh plugs restore smooth performance and can improve your gas mileage. If your engine feels rough or you are overdue, see our engine service or book a visit.