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How long do spark plugs last on a Subaru?

Spark plugs in a Subaru vehicle typically last between 60,000 to 100,000 miles, depending on driving conditions and maintenance. However, the exact lifespan can vary based on several factors. This article will provide a detailed overview of spark plug longevity in Subaru cars and SUVs.


What Factors Affect Spark Plug Lifespan in Subarus?


The lifespan of spark plugs in a Subaru can be influenced by several key factors:



  • Driving Conditions: Spark plugs in Subarus used for frequent towing, off-road driving, or in extreme temperatures may wear out faster than those in vehicles used primarily for highway driving.

  • Fuel Quality: Using lower-quality fuel can lead to increased carbon buildup on the spark plugs, reducing their effectiveness and lifespan.

  • Maintenance Schedule: Regularly replacing spark plugs according to the manufacturer's recommended service intervals is crucial for maintaining optimal engine performance and longevity.

  • Engine Type: Subaru's turbocharged engines, such as those found in the WRX and STI models, may require more frequent spark plug replacement compared to naturally aspirated engines.


By understanding these factors, Subaru owners can better anticipate when their spark plugs may need to be replaced and take proactive steps to maintain their vehicle's performance and efficiency.


Recommended Spark Plug Replacement Intervals for Subarus


Subaru generally recommends replacing spark plugs every 60,000 to 100,000 miles, depending on the specific model and engine type. However, it's important to consult the owner's manual or a Subaru service professional for the recommended replacement interval for your vehicle.


By following the manufacturer's recommended maintenance schedule and being mindful of driving conditions, Subaru owners can ensure their spark plugs last as long as possible, helping to maintain the overall health and performance of their vehicle.

Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.