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What’s the difference between copper, platinum, and iridium spark plugs?

Copper plugs – cheaper, good conductivity, but shorter lifespan (30–50k km).
Platinum plugs – longer-lasting (up to 80k km), better resistance to wear.
Iridium plugs – premium choice, last the longest (100k+ km), deliver stronger spark and better efficiency.

Bosch and NGK/NTK offer iridium and platinum plugs widely used by manufacturers for modern engines.

Run Auto Parts is Australia's biggest independent online auto parts store for European car owners. Since 2012, our slogan has been We Know Euro, but did you know we now sell quality OEM and Aftermarket parts for ALL vehicle makes and models?

So now we offer all our customers access to the best OEM and Aftermarket parts at the most affordable prices, no matter what they drive.

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What’s the difference between copper, platinum, and iridium spark plugs?