How long do iridium spark plugs last on a Subaru?
Iridium spark plugs in a Subaru vehicle can typically last between 60,000 to 100,000 miles, depending on driving conditions and maintenance. Iridium spark plugs are known for their durability and longevity compared to traditional copper spark plugs.
What Are Iridium Spark Plugs?
Iridium spark plugs are a type of spark plug that use an iridium alloy for the electrode, instead of the more common copper or platinum. Iridium is an extremely hard and durable metal that can withstand higher temperatures and electrical currents than other materials. This makes iridium spark plugs more resistant to wear and tear, allowing them to last significantly longer than traditional spark plugs.
How Long Do Iridium Spark Plugs Last in a Subaru?
The lifespan of iridium spark plugs in a Subaru vehicle can vary depending on several factors, but they generally last between 60,000 to 100,000 miles. Some key factors that can affect the lifespan of iridium spark plugs in a Subaru include:
- Driving Conditions: Harsher driving conditions, such as frequent towing, hauling heavy loads, or driving in extreme temperatures, can cause the spark plugs to wear out faster.
- Maintenance Schedule: Regularly scheduled tune-ups and spark plug replacements, as recommended by the manufacturer, can help maximize the lifespan of the iridium spark plugs.
- Engine Type: Subaru engines with higher compression ratios or more powerful performance may require spark plugs to be replaced more frequently.
It's important to note that while iridium spark plugs are more durable than traditional spark plugs, they should still be inspected and replaced as part of your Subaru's regular maintenance schedule.
Signs That Iridium Spark Plugs Need Replacement
There are several signs that may indicate your Subaru's iridium spark plugs need to be replaced, including:
- Decreased Fuel Efficiency: Worn spark plugs can cause the engine to run less efficiently, leading to a noticeable drop in fuel economy.
- Rough Idling or Misfiring: Faulty spark plugs can cause the engine to misfire or run rough, especially at idle.
- Difficulty Starting: Worn spark plugs can make it harder for the engine to start, especially in cold weather.
- Check Engine Light: The check engine light may illuminate if the spark plugs are not functioning properly.
If you notice any of these signs, it's best to have your Subaru's spark plugs inspected and replaced by a qualified mechanic as soon as possible.p>
How long do iridium spark plugs last on Subaru?
OEM is NGK Iridium spark plugs, with a recommended change interval of 60K miles.
How do I know if my Subaru spark plugs are bad?
One of the first signs of spark plug wear is trouble starting your Subaru. If the engine cranks longer than usual before starting or if you experience intermittent starting issues, it's time to inspect your spark plugs.
How often should you change NGK iridium spark plugs?
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.
What are the disadvantages of iridium spark plugs?
Cons of Iridium Spark Plugs
- Iridium spark plugs are much more expensive than platinum and copper spark plugs.
- In terms of like-for-like performance, an iridium spark plug is on par with a good quality platinum spark plug, which is usually available for less money.
How often should you replace spark plugs on a Subaru?
every 30,000 miles
Experts generally recommend replacing spark plugs every 30,000 miles for the best results. If one of your Subaru spark plugs gets out of whack, it can cause a reduction in gas mileage and engine problems later on.
How do I know if my iridium plugs are worn out?
Signs of Worn Spark Plugs
Rough idling. You hear strange noises such as knocking or rattling coming from your engine as you drive as well as feel unusual vibrations because your engine misfires. Slow acceleration.
How much does it cost to replace spark plugs with iridium?
Platinum- or iridium-tipped plugs using laser technology cost the most: as much as $25 each. 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.
What is the life expectancy of iridium spark plugs?
100,000 miles
Recommended Spark Plug Replacement Intervals:
Platinum Spark Plugs: Platinum spark plugs have a longer lifespan and may last up to 60,000 miles or more before replacement is necessary. Iridium Spark Plugs: Iridium spark plugs are known for their durability and longevity, often lasting up to 100,000 miles or more.
Which spark plugs last longer iridium or platinum?
Iridium is said to be six times harder and eight times stronger than platinum with a 700° higher melting point. Iridium spark plugs have extremely fine electrodes while retaining excellent wear characteristics. Thanks to its strength, iridium spark plugs can last up to 25% longer than comparable platinum spark plugs.
Do iridium spark plugs really last 100,000 miles?
Typically we have found you can expect 50-80k miles on a traditional iridium plug.
