Spark Plug Replacement at your home or office.

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Spark Plug Replacement Estimate for Subaru Outback

Subaru Outback Spark Plug Replacement costs $165 on average. Following is a breakdown of the labor and parts estimates.

YourMechanic Price
$101 to $256
Labor: $98 -$240
Parts: $3 -$16
Average Dealer price
$136 to 312
Average Shop price
$120 to 271
Get an instant quote for your car
Our mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
Get a quote
CarServiceYourMechanic PriceShop/Dealer Price
2000 Subaru OutbackH4-2.5LService typeSpark Plug ReplacementYourMechanic Price$109.26Shop/Dealer Price$132.41 - $156.10
2014 Subaru OutbackH6-3.6LService typeSpark Plug ReplacementYourMechanic Price$178.16Shop/Dealer Price$215.72 - $249.60
2004 Subaru OutbackH4-2.5LService typeSpark Plug ReplacementYourMechanic Price$108.42Shop/Dealer Price$131.39 - $154.47
2001 Subaru OutbackH6-3.0LService typeSpark Plug ReplacementYourMechanic Price$221.50Shop/Dealer Price$268.07 - $309.47
2008 Subaru OutbackH4-2.5L TurboService typeSpark Plug ReplacementYourMechanic Price$221.72Shop/Dealer Price$268.24 - $309.72
2004 Subaru OutbackH6-3.0LService typeSpark Plug ReplacementYourMechanic Price$220.36Shop/Dealer Price$266.49 - $306.92
2013 Subaru OutbackH6-3.6LService typeSpark Plug ReplacementYourMechanic Price$178.40Shop/Dealer Price$216.06 - $250.15
2006 Subaru OutbackH4-2.5L TurboService typeSpark Plug ReplacementYourMechanic Price$227.17Shop/Dealer Price$275.22 - $320.91
Show example Subaru Outback Spark Plug Replacement prices

Spark Plug Replacement Service & Cost

What are the Spark Plugs all about?

The spark plugs are an important part of the ignition system. When you turn the ignition key (car's key) on, it causes the ignition coil to generate the spark which ignites the air-fuel mixture in the engine cylinders to start the engine. The number of spark plugs in the car is the same as the number of cylinders, although some vehicle manufacturers will use two spark plugs per cylinder.

Over time, the spark plugs wear out and require replacement. When the spark plugs wear out, it is harder for it the air-fuel mixture to ignite, resulting in engine misfires. If one of the spark plugs has failed, the car will still start and run, but it will run poorly. On some vehicles, spark plug replacement may be labor intensive and involve removal of the intake plenum.

Spark plugs-MATROX-1

Keep in mind:

  • When the spark plugs are replaced, it is a good idea to inspect the ignition cables as well.
  • Spark plugs come in numerous ratings, and the correct rating for your vehicle should always be used.

How it's done:

  • Scan the car for codes.
  • Clean all surface areas around the spark plugs.
  • Remove spark plugs.
  • Inspect threads in engine head (where plugs are installed).
  • Perform compression test if needed.
  • Inspect ignition wires.
  • Apply anti-seize to the threads of the spark plugs.
  • Install new spark plugs.
  • If needed replace any gaskets removed.

Our recommendation:

During routine maintenance and checkups, your ignition system should always be inspected. Any time that a component of the ignition system is replaced, it’s a good idea to consider replacing the spark plugs as well. If you don’t preemptively change your spark plugs your engine will let you know by misfiring or running poorly, so schedule an inspection as soon as you notice that your engine is not performing properly.

What common symptoms indicate you may need to replace the Spark Plugs?

  • Check Engine light is on.
  • Engine misfires.
  • Poor fuel economy.
  • Vibration coming from the engine.

How important is this service?

Spark plugs are responsible for igniting the fuel that your engine uses to run. When you turn your key, a small voltage of power is sent to the ignition coil, where it is transformed into high voltage currency. This high voltage currency is sent through the ignition cables to the spark plugs. The spark plugs use the power to create a spark, which ignites the fuel, and allows the engine to function.

When the spark plugs malfunction, this spark won’t be created, and the fuel will not be ignited as it should. Your vehicle has many spark plugs, so depending on how many fail, your engine may either run poorly, or not run at all. Continuing to drive a vehicle with malfunctioning spark plugs can also cause damage to the catalytic converter.

Fast and easy Spark Plug Replacement service at your home or office.

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Meet some of our expert Subaru mechanics

Real customer reviews from Subaru owners like you.

445 reviews
Chris
17 years of experience
Great guy. He was on time, knew his stuff, and did what was asked in a timely manner. Will definitely be using his services again in the future.
2015 SUBARU OUTBACK - OIL CHANGE
Want Chris's expert advice? Ask your question now. Its free!
274 reviews
Noe
31 years of experience
Noe was very friendly and professional and got my valve cover gasket replaced in not time! He also did a great inspection for what I need next. I highly recommend him.
2003 SUBARU OUTBACK - VALVE COVER GASKET REPLACEMENT
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192 reviews
Chet
36 years of experience
Took my outback to a subaru dealership and was told my CJ boots were leaking and needed replaced. Chet inspected the CV boots and reported that it was the rack and pinion assy that was leaking and not the CV boot assy. He saved me $$$ and repaired what was needed. I just found my mechanic!
2008 SUBARU OUTBACK - STEERING RACK/GEARBOX REPLACEMENT
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136 reviews
Casey
19 years of experience
Casey changed valve cover gaskets on my 2001 Subaru six cylinder engine. A very time consuming job. He arrived promptly and worked diligently to get the job done. I recommend him for any work that is needed to be done. My job was something I did not want to do myself and Casey performed better than I could have expected. Will use him again if the need arises.
2001 SUBARU OUTBACK - SPARK PLUG REPLACEMENT
Want Casey's expert advice? Ask your question now. Its free!
Get an instant quote for your car
Our mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
Get a quote
CarServiceYourMechanic PriceShop/Dealer Price
2000 Subaru OutbackH4-2.5LService typeSpark Plug ReplacementYourMechanic Price$109.26Shop/Dealer Price$132.41 - $156.10
2014 Subaru OutbackH6-3.6LService typeSpark Plug ReplacementYourMechanic Price$178.16Shop/Dealer Price$215.72 - $249.60
2004 Subaru OutbackH4-2.5LService typeSpark Plug ReplacementYourMechanic Price$108.42Shop/Dealer Price$131.39 - $154.47
2001 Subaru OutbackH6-3.0LService typeSpark Plug ReplacementYourMechanic Price$221.50Shop/Dealer Price$268.07 - $309.47
2008 Subaru OutbackH4-2.5L TurboService typeSpark Plug ReplacementYourMechanic Price$221.72Shop/Dealer Price$268.24 - $309.72
2004 Subaru OutbackH6-3.0LService typeSpark Plug ReplacementYourMechanic Price$220.36Shop/Dealer Price$266.49 - $306.92
2013 Subaru OutbackH6-3.6LService typeSpark Plug ReplacementYourMechanic Price$178.40Shop/Dealer Price$216.06 - $250.15
2006 Subaru OutbackH4-2.5L TurboService typeSpark Plug ReplacementYourMechanic Price$227.17Shop/Dealer Price$275.22 - $320.91
Show example Subaru Outback Spark Plug Replacement prices

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