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How much to replace spark plugs in a Subaru?

The average cost to replace spark plugs in a Subaru vehicle is typically between $200 and $300, including parts and labor. This cost can vary depending on the specific Subaru model, the number of spark plugs needed, and the labor rates of the repair shop.


Detailed Breakdown of Spark Plug Replacement Cost for Subaru


Replacing the spark plugs in a Subaru is a routine maintenance task that should be performed at regular intervals, usually every 30,000 to 60,000 miles, depending on the manufacturer's recommendations. The cost of this service can be broken down as follows:



  • Parts Cost: The cost of the spark plugs themselves can range from $20 to $100, depending on the type of spark plugs used (standard, iridium, or platinum) and the number of cylinders in the Subaru engine.

  • Labor Cost: The labor cost to replace the spark plugs can range from $100 to $200, depending on the hourly rate of the repair shop and the complexity of the job. Replacing spark plugs in a Subaru can take between 1 to 2 hours of labor.

  • Additional Costs: In some cases, additional parts or services may be required, such as replacing the ignition coils or wires, which can add to the overall cost.


It's important to note that the cost can also vary depending on the specific Subaru model, as some models may have more difficult-to-access spark plugs or require more specialized tools or procedures.


Tips for Reducing Spark Plug Replacement Costs



  • DIY Replacement: If you're mechanically inclined, you can save money by replacing the spark plugs yourself. This can reduce the labor cost, but you'll still need to purchase the spark plugs.

  • Shop Around: Compare prices and labor rates at different repair shops to find the best deal. Some dealerships or specialty Subaru repair shops may charge more than independent mechanics.

  • Use Aftermarket Parts: While OEM (original equipment manufacturer) spark plugs are recommended, you can sometimes find aftermarket spark plugs that are compatible with your Subaru and cost less.

  • Maintain Regular Maintenance: Keeping up with your Subaru's recommended maintenance schedule can help prevent the need for more expensive repairs down the line, including spark plug replacement.


By understanding the typical cost range and considering these tips, you can better prepare for the expense of replacing the spark plugs in your Subaru and ensure that the job is done correctly and cost-effectively.

Is it hard to replace spark plugs on a Subaru?


It's not hard. I got mine done in about an hour and a half, never done a boxer before. You just need a good thin walled spark plug socket, a few extensions of different lengths, a couple swivel joints and some patience. Take your time, go slow and you'll get there!



When should spark plugs be replaced on a Subaru?


While the answer depends on the make and model of your vehicle, as a good example, the newest Subaru BOXER® engines are built with spark plugs made of ultra resilient materials, such as platinum. This allows them to be replaced about every 60,000 miles.



How much to replace Subaru Outback spark plugs?


$372 - $437. “Dealer” refers to service centers that specialize in one or two makes and sell those vehicles. As a franchise dealer: They use top-quality manufacturer-recommended or “official” parts.



How much should I pay to get spark plugs changed?


For instance, a set of four spark plugs in a compact car will likely be around $50 to $80 to install. Some vehicles need an intake plenum or other parts removed to access the spark plugs, and the price goes up commensurately.



Why is replacing spark plugs so expensive?


The intake manifold will need to be removed to reach the plugs on the back bank. All that extra disassembly adds to the labor time. Other layouts like flat engines (sometimes called “boxer”), commonly seen on Subaru's and Porsches, require more time to change the spark plugs.



What are the signs of a bad spark plug?


What are the signs your Spark Plugs are failing?

  • Engine has a rough idle. If your Spark Plugs are failing your engine will sound rough and jittery when running at idle.
  • Trouble starting. Car won't start and you're late for work… Flat battery?
  • Engine misfiring.
  • Engine surging.
  • High fuel consumption.
  • Lack of acceleration.



Can you drive a car with bad spark plugs?


Ideally, you should replace them immediately. However, you can get by for a short while, as long as they aren't misfiring. Poor spark keeps fuel from being burned inside the combustion chamber. This reduces power and fuel economy, and it makes it harder for the engine to idle.



What is the signs of changing spark plugs?


Rough Idling. Keep your ears open for any rattling, pinging or knocking sounds—these are another bad spark plug symptom. If your vehicle's engine is making any unusual sounds or vibrations while idling, your vehicle's spark plugs may not be functioning properly to keep the engine running smooth.



How to tell if spark plugs need changing?


Here are seven signs that are telling you that you need spark plug replacement on your vehicle.

  1. Your Vehicle is Difficult to Start.
  2. Your Engine is Misfiring.
  3. You Have Poor Fuel Economy.
  4. Your Engine Idles Rough.
  5. Your Car Doesn't Accelerate Easily.
  6. Your Engine is Loud.
  7. Your “Check Engine” Light Comes On.



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.


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.