Subaru Legacy Spark Plug Replacement at your home or office.

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Spark Plug Replacement Estimate for Subaru Legacy

Subaru Legacy Spark Plug Replacement costs $129 on average. Following is a breakdown of the labor and parts estimates.

YourMechanic Price
$73 to $258
Labor: $70 -$240
Parts: $3 -$18
Average Dealer price
$99 to 315
Average Shop price
$87 to 273
Get an instant quote for your car
Our mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
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CarServiceEstimateShop/Dealer Price
2013 Subaru LegacyH4-2.5LService typeSpark Plug ReplacementEstimate$130.88Shop/Dealer Price$159.43 - $199.33
2006 Subaru LegacyH4-2.5LService typeSpark Plug ReplacementEstimate$117.64Shop/Dealer Price$142.97 - $173.02
2011 Subaru LegacyH4-2.5LService typeSpark Plug ReplacementEstimate$138.96Shop/Dealer Price$168.08 - $193.28
2008 Subaru LegacyH4-2.5LService typeSpark Plug ReplacementEstimate$117.64Shop/Dealer Price$142.94 - $172.96
2015 Subaru LegacyH6-3.6LService typeSpark Plug ReplacementEstimate$187.16Shop/Dealer Price$226.82 - $267.35
1994 Subaru LegacyH4-2.2LService typeSpark Plug ReplacementEstimate$75.96Shop/Dealer Price$91.97 - $107.32
1997 Subaru LegacyH4-2.5LService typeSpark Plug ReplacementEstimate$130.84Shop/Dealer Price$159.50 - $199.47
2008 Subaru LegacyH4-2.5L TurboService typeSpark Plug ReplacementEstimate$231.68Shop/Dealer Price$280.86 - $329.93
Show example Subaru Legacy 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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Excellent Rating


Subaru Legacy Repair

Average Rating

4.8/5

Number of Reviews

169

Rating Summary
157
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Meet some of our expert Subaru mechanics

Real customer reviews from Subaru owners like you.

Tien

19 years of experience
623 reviews
Tien
19 years of experience
I got a text saying Tien was on his way, so the five minutes he was late due to traffic and a part pick up didn't bother me at all. He did exactly the service I requested, plus an overview of my newly purchased used vehicle, and didn't try to sell me a bunch of extra services. I was given a quote of $171 when I made the appointment, and I was charged exactly $171 when the service was completed. Pep Boys gave me an estimate for the same service of c "$325, minimum" just last week! Tien did find an additional issue I need to take a look at, and gave me a reasonable explanation with pictures showing the area that needed attention. i'll be booking the service for that in a couple weeks. The ease of making an appointment and paying online, the convenience of them coming to me, the integrity of their quote being the actual price, and the thorough service provided will keep me coming back (and recommending to my friends) for all my maintenance and service needs!
2000 SUBARU LEGACY - SPARK PLUGS - SAN LEANDRO, CALIFORNIA

Theodore

12 years of experience
577 reviews
Theodore
12 years of experience
It was a great experience. Am totally planning on having him do the rest of the work.
2003 SUBARU IMPREZA - SPARK PLUGS - SEATTLE, WASHINGTON

Jose

13 years of experience
432 reviews
Jose
13 years of experience
Jose arrived on time and completed the necessary repairs in a timely manner. Jose is a professional mechanic and is very knowledgeable and explains the repairs in an informative and understandable manner. We always get great support from Jose and will continue to use him when repairs are needed for our 1998 Subaru Outback. We will also recommend Jose to our friends and family. .
1998 SUBARU LEGACY - KNOCK SENSOR - BEAVERTON, OREGON

Jose

11 years of experience
175 reviews
Jose
11 years of experience
Jose was fast and efficient. He explained everything to me clearly and provided me with a quote for additional services he recommends. I've already booked him for another job.
1991 SUBARU LEGACY - BATTERY CABLE REPLACEMENT (NEGATIVE) - SAINT PETERSBURG, FLORIDA
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
CarServiceEstimateShop/Dealer Price
2013 Subaru LegacyH4-2.5LService typeSpark Plug ReplacementEstimate$130.88Shop/Dealer Price$159.43 - $199.33
2006 Subaru LegacyH4-2.5LService typeSpark Plug ReplacementEstimate$117.64Shop/Dealer Price$142.97 - $173.02
2011 Subaru LegacyH4-2.5LService typeSpark Plug ReplacementEstimate$138.96Shop/Dealer Price$168.08 - $193.28
2008 Subaru LegacyH4-2.5LService typeSpark Plug ReplacementEstimate$117.64Shop/Dealer Price$142.94 - $172.96
2015 Subaru LegacyH6-3.6LService typeSpark Plug ReplacementEstimate$187.16Shop/Dealer Price$226.82 - $267.35
1994 Subaru LegacyH4-2.2LService typeSpark Plug ReplacementEstimate$75.96Shop/Dealer Price$91.97 - $107.32
1997 Subaru LegacyH4-2.5LService typeSpark Plug ReplacementEstimate$130.84Shop/Dealer Price$159.50 - $199.47
2008 Subaru LegacyH4-2.5L TurboService typeSpark Plug ReplacementEstimate$231.68Shop/Dealer Price$280.86 - $329.93
Show example Subaru Legacy Spark Plug Replacement prices

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1-800-701-6230 · hi@yourmechanic.com