Ordinary copper and nickel spark plugs should be changed every 30,000 to 50,000 miles, unless otherwise suggested by the spark plug manufacturer. Platinum and iridium spark plugs tend to last longer than standard copper and nickel spark plugs. Expect to change them every 60,000 to 150,000 miles unless otherwise noted.
Spark plugs are designed for long-term durability, meaning that they only need to be replaced between every 80,000 and 100,000 miles.
The general rule of thumb about how often to change spark plugs is that they should be replaced after about 100,000 miles of driving.
Many automakers recommend you replace the spark plugs in your vehicle around every 100,000 kilometers.
Standard copper spark plugs last around 20,000 – 30,000 kms. The spark plugs play an important role in your engine, they produce electrical sparks that ignites the mixture of fuel and air in your engine's combustion chambers, causing the pistons to move up and down.
NGK gives them a life expectancy of 40-50k miles. But they have to temper their projections as driving conditions and motor modifications differ. Typically we have found you can expect 60,000 to 80,000 miles on an unaltered motor. NGK Laser Iridium Spark Plugs have iridium center and a platinum ground electrodes.
A spark plug usually lasts about 30,000 miles, but cleaning them and maintaining them periodically lets your engine perform better and increases your plugs' lifespan. If you see rust, carbon, gunk, dust, or any type of buildup during the inspection, it may be time to clean them.
The deposits that build upon the plugs can eventually cause them to misfire. When this happens, the unburned fuel in the cylinders can start to eat away at the cylinder walls. This can cause dangerous pressure levels to build up, and it can even lead to engine failure.
Back in the day, spark plugs really did wear out that often. A couple of things are different now. First, spark plugs are made of better materials that last longer and they're designed better. The second reason that plugs used to have to be changed was that they were fouled up with carbon deposits.
Luckily, spark plugs don't require replacement very often and can go years and many miles before replacement is needed. Most auto manufacturers suggest having new spark plugs installed about every 100,000 miles; however, spark plug longevity depends on the engine, condition, and spark plug type.
Continuing to use a spark plug with worn electrodes puts stress on the ignition coil and can shorten its life. Please replace spark plugs sooner rather than later. Beware of only using your vehicle for short trips or slow driving! This can lead to carbon fouling or oil fouling.
Whenever you change spark plugs, it is a good idea to replace the ignition wires and vice versa. This will keep your vehicle running at peak performance and prevent you wasting money on unburned gasoline. In fact, a sudden drop in gas mileage may be an indicator that your ignition system is not functioning properly.
Replacing worn spark plugs can greatly improve your engine's performance and efficiency, and it can be done at home with basic hand tools. Recommended spark plug replacement intervals can range from 30,000 miles to every 100,000 miles, and they vary widely by car manufacturer and spark plug metal types and design.
You can pay between $16 and $100 for a set of spark plugs, depending on the type of plugs you need and the number of cylinders your engine has. And when figuring out the price, it helps to remember that some specialty engines use two spark plugs per cylinder.
The kind of spark plugs in your car will determine this. Older vehicles (15 to 20 years old) are more likely to have conventional plugs, which have a lifespan of 12,000 to 15,000 miles. Newer models produced up to the year 2000 have platinum tips, which have a lifespan of 30,000 miles.
At the top of the list, we have the NGK Spark Plugs. With iridium as its core material, this spark plug pack can operate at a much wider heat range as compared to ordinary spark plugs made out of platinum or copper.
With incomplete combustion, your fuel consumption and emissions may increase. Eventually, your car may die while running or fail to start. Driving with bad spark plugs can also lead to more serious and costly problems with your engine, including damage to your vehicle's catalytic converter.
Investing in high-performance spark plugs is a surefire way to save some money in the long run. Better gas mileage is just the beginning. These premium spark plugs last longer than conventional plugs, which means you'll be able to go a longer time between tune-ups, keeping your maintenance costs down.
The estimated mileage of iridium spark plugs – depending on the thickness of the central electrode and the construction of the ground electrode – ranges from 60,000 km up to 120,000 km in the case of DENSO Super Ignition Spark Plugs, which feature a protruding ground electrode, like DENSO's Twin Tip (TT) Spark Plugs.
Iridium spark plugs are better at starting engines than other types of spark plug because the spark is highly concentrated in the central electrode, and consequentially requires less voltage to operate. This makes ignitions faster and more reliable, and also reduces power consumption.
Long-life platinum and iridium spark plugs will typically last up to 100,000 miles or longer provided the engine isn't using oil or doesn't spend a lot of time idling.