The Truth About 10 Popular Spark Plug Brands

10. NGK – The Industry Favorite

NGK isn’t just popular—it’s the gold standard. Used by nearly all Japanese automakers and many others, NGK plugs are known for lasting long and performing flawlessly. Whether you’re replacing OEM parts or upgrading, NGK’s wide selection and thousands of top-rated reviews make them the safest bet out there.

If your car came with a specific brand of spark plug, that’s usually still your best choice. But if you're unsure, NGK, DENSO, or Motorcraft/AC Delco (depending on your car brand) are excellent starting points.