Skip the auto shop - Our mechanics make house calls

What Are the Best Spark Plugs for Normal Use?

Normal Spark Plugs

Spark plugs are essential components of your ignition system. They’re responsible for supplying the spark that ignites fuel and starts the combustion process. However, not all spark plugs are created equal. You’ll find “normal” plugs on the market, but there are also some rather exotic sounding alternatives. If you’ve found yourself wondering what the difference was between iridium, platinum, “Splitfire®” plugs, and other options on the market, it doesn’t have to be confusing.

Types of spark plugs

First and foremost, high performance does not necessarily mean longer life. If you’re thinking about spending a lot of money on high tech spark plugs, understand that you might actually have to replace those sooner than if you’d just gone with the OEM recommended plugs.

  • Copper: Copper spark plugs have the shortest life on the market, but they’re the best at conducting electricity. You can expect to replace these roughly every 25,000 miles or so (a great deal depends on your driving habits, as well as your engine’s condition).

  • Platinum: Platinum plugs aren’t really designed to deliver better conduction for electricity, but they do provide a longer overall use life.

  • Iridium: Iridium plugs are similar to platinum plugs in that they’re designed to offer a longer lifespan. However, these can be finicky, and gapping them can actually damage the electrode, so many mechanics recommend against using them in a stock engine.

  • Exotic Tips: You’ll find a lot of different tip designs on the market, ranging from split tips to dual tips, and even quad tips. Ostensibly, this is supposed to deliver better spark, but there’s no evidence they do anything other than cost you more at the checkout counter.

Really, the best spark plugs for normal use are probably the ones that came in your car’s engine from the manufacturer. Check your owner’s manual for the automaker’s recommendation, or speak with a trusted mechanic.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

More related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How to Buy Fuel Treatments
Adding a fuel additive to your gas tank when you fill up is one way to clean vital engine parts of deposits, improve the performance of your engine,...
Insurance Requirements for Car Registration in Kentucky
The Kentucky Transportation Cabinet requires that all drivers in Kentucky carry liability automotive insurance, or “financial responsibility” in order to operate a vehicle legally and maintain vehicle...


Related questions

Q: Car not starting.

Hi, there are three things you car need to start Air/fuel, compression, ignition. If one of these things is missing the car will not start. I would recommend having a technician come out and test these systems for failure. Most...

Q: Frozen spark plug

Yes, seized plugs can be removed and there are specific techniques that mechanics rely on. Upon removal, though, there is always the possibility that threads could be damaged in which case the spark plug hole would be chased (cleaned up)...

Q: Rubbing sound when starting

Hello. I'm sorry to hear about the accident. If everything was shifted upwards, as you mentioned, then a problem can exist from a number of parts. If the noise occurs when starting, then the exhaust may have been pushed up...