Spark Plug Replacement at your home or office.

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Spark Plug Replacement Estimate for Mazda CX-9

Mazda CX-9 Spark Plug Replacement costs $131 on average. Following is a breakdown of the labor and parts estimates.

YourMechanic Price
$73 to $173
Labor: $70 -$160
Parts: $3 -$13
Average Dealer price
$99 to 213
Average Shop price
$87 to 183
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
2014 Mazda CX-9V6-3.7LService typeSpark Plug ReplacementYourMechanic Price$138.80Shop/Dealer Price$168.13 - $197.34
2010 Mazda CX-9V6-3.7LService typeSpark Plug ReplacementYourMechanic Price$138.56Shop/Dealer Price$167.96 - $197.08
2012 Mazda CX-9V6-3.7LService typeSpark Plug ReplacementYourMechanic Price$138.56Shop/Dealer Price$167.88 - $196.94
2013 Mazda CX-9V6-3.7LService typeSpark Plug ReplacementYourMechanic Price$138.56Shop/Dealer Price$167.92 - $197.00
2015 Mazda CX-9V6-3.7LService typeSpark Plug ReplacementYourMechanic Price$140.29Shop/Dealer Price$170.02 - $200.35
2007 Mazda CX-9V6-3.5LService typeSpark Plug ReplacementYourMechanic Price$152.80Shop/Dealer Price$185.03 - $216.40
2008 Mazda CX-9V6-3.7LService typeSpark Plug ReplacementYourMechanic Price$152.86Shop/Dealer Price$185.29 - $216.84
2009 Mazda CX-9V6-3.7LService typeSpark Plug ReplacementYourMechanic Price$152.56Shop/Dealer Price$184.87 - $216.17
Show example Mazda CX-9 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 Mazda mechanics

Real customer reviews from Mazda owners like you.

432 reviews
Patrick
22 years of experience
Gets the job done. Shows on time
2008 MAZDA CX-9 - SERPENTINE/DRIVE BELT REPLACEMENT
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395 reviews
Tien
18 years of experience
Really cares about your car, tells you everything that needs to be fixed, if it doesn't need to fixing he'll tell you and take your money
1990 MAZDA RX-7 - SPARK PLUG REPLACEMENT
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184 reviews
Tom
37 years of experience
Convenient, practical advice and good service. A throw back to your neighborhood mechanic before the massive dealer networks. A definite solution to those service items you might consider doing yourself but do not have the time.
2008 MAZDA CX-9 - BRAKE ROTOR/DISC REPLACEMENT (FRONT, REAR)
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164 reviews
Theodore
11 years of experience
Theodore was great. On time, Corteous, knowledgeable, and even finish faster than the estimated time. Beyond satisfied with the service!
2004 MAZDA 6 - WHEEL BEARINGS REPLACEMENT (PASSENGER SIDE REAR)
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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
2014 Mazda CX-9V6-3.7LService typeSpark Plug ReplacementYourMechanic Price$138.80Shop/Dealer Price$168.13 - $197.34
2010 Mazda CX-9V6-3.7LService typeSpark Plug ReplacementYourMechanic Price$138.56Shop/Dealer Price$167.96 - $197.08
2012 Mazda CX-9V6-3.7LService typeSpark Plug ReplacementYourMechanic Price$138.56Shop/Dealer Price$167.88 - $196.94
2013 Mazda CX-9V6-3.7LService typeSpark Plug ReplacementYourMechanic Price$138.56Shop/Dealer Price$167.92 - $197.00
2015 Mazda CX-9V6-3.7LService typeSpark Plug ReplacementYourMechanic Price$140.29Shop/Dealer Price$170.02 - $200.35
2007 Mazda CX-9V6-3.5LService typeSpark Plug ReplacementYourMechanic Price$152.80Shop/Dealer Price$185.03 - $216.40
2008 Mazda CX-9V6-3.7LService typeSpark Plug ReplacementYourMechanic Price$152.86Shop/Dealer Price$185.29 - $216.84
2009 Mazda CX-9V6-3.7LService typeSpark Plug ReplacementYourMechanic Price$152.56Shop/Dealer Price$184.87 - $216.17
Show example Mazda CX-9 Spark Plug Replacement prices

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