Subaru RX Spark Plug Replacement at your home or office.

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Spark Plug Replacement Estimate for Subaru RX

Subaru RX Spark Plug Replacement costs $76 on average. Following is a breakdown of the labor and parts estimates.

YourMechanic Price
$73 to $95
Labor: $70 -$80
Parts: $3 -$15
Average Dealer price
$99 to 124
Average Shop price
$87 to 103
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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CarServiceYourMechanic PriceShop/Dealer Price
1989 Subaru RXH4-1.8L TurboService typeSpark Plug ReplacementYourMechanic Price$75.78Shop/Dealer Price$91.75 - $106.97
1985 Subaru RXH4-1.8L TurboService typeSpark Plug ReplacementYourMechanic Price$100.68Shop/Dealer Price$122.94 - $156.89
1988 Subaru RXH4-1.8L TurboService typeSpark Plug ReplacementYourMechanic Price$75.78Shop/Dealer Price$91.77 - $107.01
1987 Subaru RXH4-1.8L TurboService typeSpark Plug ReplacementYourMechanic Price$75.78Shop/Dealer Price$91.79 - $107.05
1986 Subaru RXH4-1.8L TurboService typeSpark Plug ReplacementYourMechanic Price$75.78Shop/Dealer Price$91.76 - $106.99
Show example Subaru RX 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.

Theodore

12 years of experience
567 reviews
Theodore
12 years of experience
Honest,skilled and does pay attention to details.
2011 SUBARU OUTBACK - SPARK PLUGS - KIRKLAND, WA

Chet

37 years of experience
340 reviews
Chet
37 years of experience
Chet was great, as usual. He always gives us exactly what we need, advises on future needs and doesn't try to sell us unnecessary service.
2005 SUBARU BAJA - EVAPORATION VENT SOLENOID - SAN YSIDRO, CA

Richard

7 years of experience
272 reviews
Richard
7 years of experience
Richard diagnosed the cause of the smoking quickly and made excellent suggestions. Hopefully the repair will be smooth. CH
2009 SUBARU OUTBACK - SMOKE FROM ENGINE OR EXHAUST INSPECTION - GREENBELT, MD

Eric

8 years of experience
202 reviews
Eric
8 years of experience
Great service , excellent job.
2013 SUBARU XV CROSSTREK - BRAKE PADS REPLACEMENT (FRONT, REAR) - KNIGHTDALE, NC
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
1989 Subaru RXH4-1.8L TurboService typeSpark Plug ReplacementYourMechanic Price$75.78Shop/Dealer Price$91.75 - $106.97
1985 Subaru RXH4-1.8L TurboService typeSpark Plug ReplacementYourMechanic Price$100.68Shop/Dealer Price$122.94 - $156.89
1988 Subaru RXH4-1.8L TurboService typeSpark Plug ReplacementYourMechanic Price$75.78Shop/Dealer Price$91.77 - $107.01
1987 Subaru RXH4-1.8L TurboService typeSpark Plug ReplacementYourMechanic Price$75.78Shop/Dealer Price$91.79 - $107.05
1986 Subaru RXH4-1.8L TurboService typeSpark Plug ReplacementYourMechanic Price$75.78Shop/Dealer Price$91.76 - $106.99
Show example Subaru RX Spark Plug Replacement prices

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