With NGK's Laser Iridium Spark Plugs, my car's ignition system has been revolutionized. As a loyal customer, I discovered that the Automotive ignition has significantly improved, providing seamless starting and smooth acceleration. The precision and durability of these spark plugs are remarkable resulting in increased fuel efficiency. However, the only downside is the slightly higher price compared TO traditional spark plugs. Nevertheless, the benefits far outweigh the cost, making NGK Spark PluSee full review