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
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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
1988 Subaru RXH4-1.8L TurboService typeSpark Plug ReplacementYourMechanic Price$75.78Shop/Dealer Price$91.75 - $106.97
1986 Subaru RXH4-1.8L TurboService typeSpark Plug ReplacementYourMechanic Price$75.78Shop/Dealer Price$91.81 - $107.09
1987 Subaru RXH4-1.8L TurboService typeSpark Plug ReplacementYourMechanic Price$75.78Shop/Dealer Price$91.77 - $107.01
1985 Subaru RXH4-1.8L TurboService typeSpark Plug ReplacementYourMechanic Price$100.68Shop/Dealer Price$122.91 - $156.85
1989 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.

511 reviews
Theodore
12 years of experience
My appointment was late in the day so I was not surprised that the mechanic was a little behind schedule but was pleased to have gotten a call to say so. The job was done in good time and clean. Theodore's experience showed in our conversations about the work, other potential jobs, and whether they were worth it to me as I decide whether to keep the car. Very patient, careful explanations that expanded my own knowledge base. Definitely my first call for next time. Thanks Theodore, and a great price!
1998 SUBARU LEGACY - CAR THERMOSTAT REPLACEMENT
505 reviews
Lucas
13 years of experience
Lucas understood my priorities, he was experienced, thorough and was a great pleasure to work with. He took considerable time investigating and understanding the things I was concerned about and then explained all of the issues very clearly and professionally.
2014 SUBARU BRZ - PRE-PURCHASE CAR INSPECTION
429 reviews
Noe
32 years of experience
Noe was punctual, efficient, and communicated clearly every step of the way. Saved me the time and hassle of taking my car in for service. Thanks!
1996 SUBARU LEGACY - OIL CHANGE
128 reviews
Eugenio
22 years of experience
From the moment the appointment was scheduled, I received phenomenal service! YourMechanic maintained consistent effective communication with me about my appointment and worked around all my issues, to include car being parked in parking garage, work schedule, not having consistent access to my cell phone due to security of building, etc. GREAT SERVICE! Eugenio arrived in a timely manner and utilized my requested means of communication (office phone). He met me in the middle (worked on my car in a street parking spot). He effectively diagnosed the issues and fixed the problems in a timely manner (total time to completion = 1 hour). I couldn't be happier with the way things went and I spent less than $100 on the amazing service. WILL DEFINITELY be using YourMechanic again in the future!
2009 SUBARU IMPREZA - OTHER INSPECTIONS
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
1988 Subaru RXH4-1.8L TurboService typeSpark Plug ReplacementYourMechanic Price$75.78Shop/Dealer Price$91.75 - $106.97
1986 Subaru RXH4-1.8L TurboService typeSpark Plug ReplacementYourMechanic Price$75.78Shop/Dealer Price$91.81 - $107.09
1987 Subaru RXH4-1.8L TurboService typeSpark Plug ReplacementYourMechanic Price$75.78Shop/Dealer Price$91.77 - $107.01
1985 Subaru RXH4-1.8L TurboService typeSpark Plug ReplacementYourMechanic Price$100.68Shop/Dealer Price$122.91 - $156.85
1989 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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