There are many different types of spark plugs and they all have a long life. The most popular ones you will keep hearing about are copper, platinum, and iridium. Due to the material with which they are made, they have different characteristics.
Among all these variants, if you asked us to pick our favorite, we would definitely go with iridium. They are considered the most superior of all. Let’s learn more about them.
How Long Do Iridium Spark Plugs Last?
A Brief About Iridium Spark Plugs
As the name suggests, these spark plugs are made of iridium. But that’s not it. They have very fine center electrodes and are extremely strong. Some of their top characteristics are:
- They have a much higher melting point than copper or platinum (700 degrees C)
- They are much harder and stronger as well
- They have better firing efficiency and the ability to conduct electricity
- They have the longest life, lasting at least 25% longer than platinum
The only downside to these spark plugs is their price tag. They tend to be expensive but we think the price is justified. You get so much more out of them and don’t even need to worry about replacement for a long time. Thus, despite the expense, they are the best choice.
How Long Do Iridium Spark Plugs Last?
They can easily last for up to 100,000 miles! When you compare this to copper, you will know why this is such a big deal. Copper spark plugs last only for 20,000 miles!
Platinum spark plugs also boast of long life and can run up to 100,000 miles. But, due to the many other advantages, iridium spark plugs are a better choice.
It is interesting to note here that even though the limit is 100,000, most manufacturers such as NGK recommend a replacement within 60,000 to 80,000 miles. This is possible because removing the spark plugs can difficult after the car has run 100,000 miles. You may end up damaging the threads. So, unless you are an expert, we advise that you rely on a professional to do the replacement for you.
Another thing we would like to shed light on here is that 100,000 is a generalization. The actual life of the spark plug depends on various factors such as idling and oil usage. In other words, if you take good care of your vehicle and get it serviced regularly, you won’t have to worry about a thing. If you are unable to do so, you may start seeing signs of spark plug wear & tear much earlier.
People also ask
Now, let’s answer a few questions to understand spark plugs better.
1) How often should I replace iridium spark plugs?
Anywhere between 60,000 and 120,000 miles, depending on the vehicle’s condition and usage.
2) Can spark plugs last 200,000 miles?
The best of spark plugs only guarantee 100,000 because every design has limits. 200,000 miles is quite a stretch and even the best ones may not last for so long.
3) Do iridium plugs make a difference?
They actually do. They provide better efficiency and can conduct energy more proficiently than the others. They also, as we mentioned earlier, last longer.
4) How do I know if my spark plugs need changing?
If you see any of these signs before your spark plugs reach 100,000 miles, you should consider replacing them.
- Hard starts
- Engine misfires
- Rough idling
- Acceleration problems
- Loud engine
- Check engine light is turned ON
5) Are iridium plugs worth the money?
Seeing the number of benefits they shower on the engine, we would say they definitely are worth the money.
Iridium spark plugs last the longest and that is why they are the finest choice. You don’t need to think twice before buying them.