Subaru Legacy Spark Plug Replacement

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Spark Plug Replacement Estimate for Subaru Legacy

Subaru Legacy Spark Plug Replacement costs $182 on average. Following is a breakdown of the labor and parts estimates.

YourMechanic Price
$83 to $403
Labor: $70 -$270
Parts: $13 -$133
Average Dealer price
$122 to 555
Average Shop price
$102 to 425
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Our mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
Get a quote
CarServiceEstimateShop/Dealer Price
1991 Subaru LegacyH4-2.2LService typeSpark Plug ReplacementEstimate$95.84Shop/Dealer Price$116.48 - $146.50
1991 Subaru LegacyH4-2.2L TurboService typeSpark Plug ReplacementEstimate$105.84Shop/Dealer Price$125.02 - $153.94
1995 Subaru LegacyH4-2.2LService typeSpark Plug ReplacementEstimate$106.24Shop/Dealer Price$126.73 - $156.86
2005 Subaru LegacyH4-2.5L TurboService typeSpark Plug ReplacementEstimate$343.28Shop/Dealer Price$424.36 - $560.14
1993 Subaru LegacyH4-2.2LService typeSpark Plug ReplacementEstimate$95.84Shop/Dealer Price$115.32 - $144.46
2011 Subaru LegacyH6-3.6LService typeSpark Plug ReplacementEstimate$410.46Shop/Dealer Price$497.68 - $699.48
2007 Subaru LegacyH4-2.5L TurboService typeSpark Plug ReplacementEstimate$304.48Shop/Dealer Price$362.17 - $458.57
2016 Subaru LegacyH6-3.6LService typeSpark Plug ReplacementEstimate$339.00Shop/Dealer Price$411.97 - $562.89
Show example Subaru Legacy Spark Plug Replacement prices

Spark Plug Replacement Service & Cost

What are 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

While replacing spark plugs remember

  • 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.

Steps for replacing spark plugs

  • 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.

When to replace spark plugs

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 it to replace the spark plugs?

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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YourMechanic Subaru Legacy Spark Plugs Replacement Service

Average Rating

5/5

Number of Reviews

6

Rating Summary
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Meet some of our expert Subaru mechanics

Real customer reviews from Subaru owners like you.

Tomas

9 years of experience
91 reviews
Tomas
9 years of experience
Tomas is awesome. Arrived on time and explained everything. I look forward to working with him again.
2010 SUBARU LEGACY - SPARK PLUGS - BASKING RIDGE, NEW JERSEY

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

Patrick

29 years of experience
711 reviews
Patrick
29 years of experience
Very reliable! Showed up on time, was fast, thorough, and kind. Really appreciated it!
2002 SUBARU LEGACY - SPARK PLUGS - SAN MARCOS, TEXAS
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
1991 Subaru LegacyH4-2.2LService typeSpark Plug ReplacementEstimate$95.84Shop/Dealer Price$116.48 - $146.50
1991 Subaru LegacyH4-2.2L TurboService typeSpark Plug ReplacementEstimate$105.84Shop/Dealer Price$125.02 - $153.94
1995 Subaru LegacyH4-2.2LService typeSpark Plug ReplacementEstimate$106.24Shop/Dealer Price$126.73 - $156.86
2005 Subaru LegacyH4-2.5L TurboService typeSpark Plug ReplacementEstimate$343.28Shop/Dealer Price$424.36 - $560.14
1993 Subaru LegacyH4-2.2LService typeSpark Plug ReplacementEstimate$95.84Shop/Dealer Price$115.32 - $144.46
2011 Subaru LegacyH6-3.6LService typeSpark Plug ReplacementEstimate$410.46Shop/Dealer Price$497.68 - $699.48
2007 Subaru LegacyH4-2.5L TurboService typeSpark Plug ReplacementEstimate$304.48Shop/Dealer Price$362.17 - $458.57
2016 Subaru LegacyH6-3.6LService typeSpark Plug ReplacementEstimate$339.00Shop/Dealer Price$411.97 - $562.89
Show example Subaru Legacy Spark Plug Replacement prices

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