What are the best spark plugs? Well, that depends on your vehicle, but iridium or platinum plugs are your best bet! We’ve researched and reviewed a range of best-selling spark plugs to provide you with an easy way to compare different options in an easy-to-read spark plug review. But there’s no need for a cold start--read up on the following specs we’ve included with each review to help you choose the best option!
Count - Some spark plugs are sold individually, while others come in multi-packs so you can easily replace everything at once.
Material - Copper, platinum, and iridium are common spark plug materials that affect price and durability over time.
Corrosion Resistance - Nickel plating and materials like platinum and iridium help prevent corrosion, giving the plug a longer lifespan.
Hex Size - What socket do you need to install your new spark plugs? This spec will let you know ahead of time!
Thread Diameter - Measured in millimeters, thread diameter is an important compatibility feature of replacement spark plugs.
Warranty - How long is the manufacturer warranty? This can be an indicator of product quality and give you peace of mind.
Now that you’re warmed up, it’s time to accelerate into our spark plugs review! Our top pick and budget pick compare what we found to be the best options on the market today. But you can explore a greater variety beyond that with our other eight spark plug reviews. Start your engines!