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Combustion engines create a mixture of air and fuel that must be ignited to provide power to the vehicle, and spark plugs provide that trigger. Spark plugs are designed to set off this air and fuel mixture, allowing the engine to generate enough power to move the vehicle. Despite the small size of these components, without spark plugs, the vehicle would not be leaving the driveway under its own power. A brand new vehicle may not need new spark plugs for 50,000 to 100,000 miles, but when the existing spark plugs start to fail, the vehicle will begin to show signs, such as rough idling sounds, knocking engine noises, trouble starting the car, bad fuel economy, and engine misfires. In order to restore healthy operation to the engine, it’s necessary to invest in new spark plugs, and this guide will help you learn about the best spark plugs for your vehicle.
How we chose the best spark plugs
In order to select a list of the best plugs, it was necessary to conduct extensive research into a broad pool of products to find the top options based on several key product specs. The first factor that was taken into consideration was the type of plug, differentiated by the material. Premium iridium products were preferred, but not all vehicles are made to use this type, so the top list also makes room for alternate types, including copper, platinum, and double iridium.
The hex size, gap, and expected life of the products were also reviewed to find the best plugs for the vehicle. Additionally, the listed heat range for each spark plug was noted and compared against other products using a simple heat range cross-reference chart to get a clear idea of the performance of each product. Using this information, the top options were selected for this list of the best spark plugs.
The best spark plugs: Reviews & Recommendations
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