Updated at: 20-07-2022 - By: Lucas

Spark plugs are responsible for igniting the engine’s internal combustion chamber by creating the electrical current needed to start the combustion process. It’s a small but critical part of the car that can withstand the intense heat generated by the combustion chamber.

Spark plugs are constructed from a variety of materials that allow them to withstand temperatures as high as 2,000 degrees Fahrenheit. Copper, iridium, platinum, or any other metal can be used to make spark plugs, making them long-lasting components that perform well.

Copper spark plugs have a copper core in the center electrode and are the most popular choice among automobile owners due to their low cost.

Cars with copper-cored spark plugs are considered to have the best performance. Since copper spark plugs have a short lifespan, they must be replaced every 20. 000 kilometers or 12. 000 miles.

Iridium alloy is used in both the ground electrode and the center electrode of iridium spark plugs. Iridium spark plugs, in addition to their long life, improve your engine’s acceleration efficiency by increasing torque.

Iridium spark plugs have a faster response time than other types of spark plugs when operating a vehicle in a variety of settings. Spark plugs made of iridium are 25 percent more durable than those made of copper, even though they are more expensive.

Iridium plugs have a melting temperature of 371 degrees Celsius, making them eight times as powerful and six times as hard as copper plugs. Because of its high melting point, it can withstand the tremendous heat generated by the engine, hence reducing wear and extending the life of the part.

All of these spark plugs are necessary to ensure that your car runs smoothly. However, choose which to install might be a difficult task.

Every business strives to demonstrate their superiority in the face of a crowded market. This may be one of the reasons why you’re unsure about which type of spark plug to use in your vehicle.

There is a good reason to know which spark plug is ideal for your car, and this begins with understanding the quality and capabilities of the material utilized in producing the spark plugs. Get familiar with the distinctions between copper and iridium spark plugs before making a decision.

Differences between copper spark plugs and iridium spark plugs

Copper Vs Iridium Spark Plugs

  • Copper spark plugs need to be changed after every 20,000 km or 12.000 miles, while with iridium plugs, you can drive for more than 60,000 miles or 100.000 km without changing it.
  • Copper spark plugs don’t overheat as Iridium spark plugs.
  • Copper sparks plugs perform better than iridium since they tend to have high conductivity.
  • Sparks to the ignition chamber of the engine eminted by both types are at different rates.

How long will copper spark plugs last?

Standard copper spark plugs have a life expectancy of between 16000 and 32000 kilometers. From ten thousand to twenty thousand miles. If your automobile has copper spark plugs, you’ll need to replace them after around 20,000 miles of driving.

How long will iridium spark plugs last?

Iridium spark plug longevity can vary from one model to the next based on factors such as model and usage, for example. Compared to copper, these spark plugs can last up to 4,000 hours longer in the engine.

An improved car’s life expectancy can range from 50, 000 miles or 80, 000 kilometers to 60, 000 miles or 100, 000 kilometers.

Do copper spark plugs increase horsepower?

Copper spark plugs can, in fact, boost the power of an engine. In high-performance driving circumstances, they can run cooler and provide greater power. Turbocharged or high compression ratio engines come standard with these spark plugs inserted as part of the factory installation.

Do iridium spark plugs increase horsepower?

Copper Vs Iridium Spark Plugs-3

It is true that using iridium spark plugs would improve performance. Improved fuel economy, lower emissions, more horsepower, and better combustion are all possible thanks to these new plugs.

Which spark plugs increase fuel economy the most?

Spark plugs come in a variety of shapes and sizes. Some of them are outstanding, while others are less than stellar. Every driver wants to get the most out of their vehicle in terms of mileage. All of this, however, will be for naught if the spark plugs are subpar.

Iridium plugs beat out copper plugs in this comparison because they provide higher fuel economy over the long term.

Your engine’s performance will suffer, and you’ll get less mileage, if your spark plug doesn’t generate enough electric current.

You need to be careful in the market if you want to enhance your engine’s fuel efficiency. Purchasing the best spark plugs on the market can help you avoid falling into this trap. Plugs like this feature

  • NGK G power spark plugs
  • NGK Iridium IX Spark plugs
  • Bosch double platinum Spark plugs
  • Denso Platinum TT spark plugs
  • Motor craft Platinum Spark plugs

Which spark plugs have a better spark?

Iridium electrodes have the best spark possible. Eight times more powerful than copper, iridium is thought to be six times more powerful than platinum.

The spark’s efficiency is improved by the firewire center electrode. Iridium spark plugs are ideal for COP ignition systems because of their strength.

What are the best copper spark plugs?

  • Champion Copper plus
  • Bosch Copper with Nickel spark plug

What are the best iridium spark plugs?

iridium spark plugs are among the best

  • Denso Iridium TT
  • NGK 6619 iridium Spark Plugs
  • Generic OR OCs Solid iridium car spark plugs
  • Solid iridium Car Spark Plug For Toyota OEM
  • NGK LFR6AIX-iridium IX Spark plug
  • ACDelco Professional iridium


Spark plugs are critical to the overall functioning of your engine when you increase your speed. When it comes to spark plug types, there are a variety to choose from, based on the type of metal or alloy used.

The engine will be affected in a substantial and distinct way by each type of plug. Copper spark plugs, for example, are considered high-performance lugs.

Others are seen as having a longer lifespan. As a result, deciding between copper and iridium spark plugs is a goal-driven process. Each plug is better than the others in some way. Furthermore, everyone can start the engine.