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} Centered Intro Knowing when you should replace your spark plugs is essential for maintaining your vehicle's engine performance, fuel efficiency, and smooth acceleration. Over time, spark plugs wear down from constant heat and electrical erosion, which can eventually lead to engine misfires or difficulty starting. Paying attention to key mileage intervals and warning signs will help you replace them before minor engine issues become major repairs. Common Signs intro + feature grid Common Signs Your Spark Plugs Need Replacement Recognizing the early warning signs of failing spark plugs helps you address the issue before it causes further damage. Engine performance usually degrades gradually, so drivers often notice subtle changes in how their vehicle accelerates or idles. Poor Acceleration & Engine Misfires If your vehicle struggles to pick up speed or hesitates when you press the gas pedal, worn spark plugs are frequently the primary cause. Rough Idling & Reduced Fuel Economy You may feel noticeable engine vibrations while stopped at a light, or you might find yourself filling up at the gas station more frequently than usual. Hard Starting & Check Engine Light When spark plugs cannot generate a proper spark, your vehicle requires more cranks to start, which places unnecessary strain on your battery and starter. Replacement intervals: two-col text + Instagram Reel embed Typical Recommended Replacement Intervals Spark plug longevity depends largely on the type of material used in the plug itself. Standard copper plugs usually require replacement every 30,000 to 50,000 miles, while long-lasting platinum or iridium spark plugs can last between 60,000 and 100,000 miles.* Checking your owner's manual provides the exact replacement schedule recommended by Kia for your specific model and engine type. Following these factory guidelines ensures your engine continues to burn fuel efficiently without putting extra strain on the ignition system. *Note: Turbocharged Kia engines may require replacement at 42,000–45,000 miles.* Stat strip 30,000–50,000 mi. Copper Spark Plugs 60,000–100,000 mi. Platinum & Iridium Plugs Why timely maintenance matters Why Timely Spark Plug Maintenance Matters Delaying spark plug replacement can lead to unburned fuel entering your exhaust system. Over time, this unburned fuel can damage your catalytic converter, leading to expensive repairs that go beyond routine maintenance. Fresh spark plugs keep your engine running at peak efficiency and help protect other ignition components. Replacing them at regular intervals supports smooth engine performance and keeps your gas mileage steady over the life of your vehicle. Professional care Professional Spark Plug Care in Lee's Summit The factory-trained technicians at Cable Dahmer Kia of Lee's Summit are available to inspect and replace your spark plugs using genuine OEM parts. Using manufacturer-recommended components ensures exact fitment and dependable performance for your engine. CTA banner Ready to Get Started? Schedule your service appointment online with Cable Dahmer Kia of Lee's Summit today. Schedule Service