Replace Best Hyundai Combustion Plugs & Hyundai Spark Plugs. Purchase Hyundai Ignition Plugs Replacement. Locate Hyundai Ignition Plug Wires. Maintaining the spark plugs in your Hyundai is pivotal for optimal performance and fuel efficiency. Regular inspection and cleaning can prevent misfires and extend their lifespan, but be alert for signs of wear such as rough idling, difficulty starting, or decreased acceleration, which indicate it's time for a replacement. When selecting new spark plugs, choose between copper, platinum, or iridium options, with iridium offering superior longevity and performance. Ensure you opt for the correct specification for your Hyundai model to facilitate seamless installation and peak engine function. High-quality materials and proper torque application during installation are crucial for the longevity of your spark plugs, ensuring your Hyundai runs smoothly with every ignition.