Without spark plugs, we would have no gasoline engines. They are the part that produces the fuel that converts the fluid into energy. Candle technology has come a long way in the last 120 years. At some point in time, spark plugs wear out regularly and need regular replacement. Today’s vehicles recommend changing spark plugs every 100,000 miles or so (via Jiffy Lube).
Today’s spark plug is not much different from the one used by Karl Benz in his 1885 motor vehicle. The shape, construction and components of the patch have remained consistent for decades, but the materials have changed significantly. Advances in metals, allowing manufacturers to switch from nickel to platinum, iridium and, more recently, ruthenium, have led to dramatic improvements in the durability and performance of modern plugs (tomorrow’s technician).
Although significant improvements have been made to candles, they still come with many options, price levels and performance levels. But are high-end plugs worth it? According to Motorcycle, the new plugs will primarily help extend life. Computer systems in modern cars improve performance in several ways. So, the fancier plugs don’t make any difference except for the very high performance engines found in the most expensive supercars and racing engines. Unless you drive a McLaren, it’s probably a waste of money.