Kia Optima Spark Plug Replacement at your home or office.

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Spark Plug Replacement Estimate for Kia Optima

Kia Optima Spark Plug Replacement costs $114 on average. Following is a breakdown of the labor and parts estimates.

YourMechanic Price
$80 to $242
Labor: $70 -$216
Parts: $10 -$26
Average Dealer price
$114 to 304
Average Shop price
$96 to 258
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
2017 Kia OptimaL4-2.4LService typeSpark Plug ReplacementYourMechanic Price$105.96Shop/Dealer Price$129.47 - $167.33
2011 Kia OptimaL4-2.4LService typeSpark Plug ReplacementYourMechanic Price$105.92Shop/Dealer Price$129.49 - $167.37
2001 Kia OptimaL4-2.4LService typeSpark Plug ReplacementYourMechanic Price$102.36Shop/Dealer Price$124.99 - $160.17
2007 Kia OptimaL4-2.4LService typeSpark Plug ReplacementYourMechanic Price$102.36Shop/Dealer Price$125.01 - $160.21
2015 Kia OptimaL4-2.4LService typeSpark Plug ReplacementYourMechanic Price$105.92Shop/Dealer Price$129.43 - $167.27
2011 Kia OptimaL4-2.0L TurboService typeSpark Plug ReplacementYourMechanic Price$109.04Shop/Dealer Price$133.32 - $173.48
2010 Kia OptimaV6-2.7LService typeSpark Plug ReplacementYourMechanic Price$210.20Shop/Dealer Price$255.23 - $304.86
2017 Kia OptimaL4-2.0L TurboService typeSpark Plug ReplacementYourMechanic Price$109.04Shop/Dealer Price$133.39 - $173.60
Show example Kia Optima 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 Kia mechanics

Real customer reviews from Kia owners like you.

659 reviews
Patrick
29 years of experience
good
2003 KIA OPTIMA - AC IS NOT WORKING INSPECTION
429 reviews
Noe
32 years of experience
This was my first time using YourMechanic so I wasn't sure what to expect. Noe showed up early like a true professional. He gave me a time estimate of an hour to hour and half - and ended up finishing in less than an hour! Also, the actual total was considerably less than the initial quote. He exceeded my expectations and I highly recommend Noe to anyone who wants above and beyond service.
2010 KIA OPTIMA - OIL CHANGE
410 reviews
Joe
39 years of experience
Nice and Honest person.
2003 KIA OPTIMA - OTHER INSPECTIONS
370 reviews
Trung
8 years of experience
Trunk was amazing! Fast and friendly, as always.
2015 KIA OPTIMA - OIL CHANGE
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
2017 Kia OptimaL4-2.4LService typeSpark Plug ReplacementYourMechanic Price$105.96Shop/Dealer Price$129.47 - $167.33
2011 Kia OptimaL4-2.4LService typeSpark Plug ReplacementYourMechanic Price$105.92Shop/Dealer Price$129.49 - $167.37
2001 Kia OptimaL4-2.4LService typeSpark Plug ReplacementYourMechanic Price$102.36Shop/Dealer Price$124.99 - $160.17
2007 Kia OptimaL4-2.4LService typeSpark Plug ReplacementYourMechanic Price$102.36Shop/Dealer Price$125.01 - $160.21
2015 Kia OptimaL4-2.4LService typeSpark Plug ReplacementYourMechanic Price$105.92Shop/Dealer Price$129.43 - $167.27
2011 Kia OptimaL4-2.0L TurboService typeSpark Plug ReplacementYourMechanic Price$109.04Shop/Dealer Price$133.32 - $173.48
2010 Kia OptimaV6-2.7LService typeSpark Plug ReplacementYourMechanic Price$210.20Shop/Dealer Price$255.23 - $304.86
2017 Kia OptimaL4-2.0L TurboService typeSpark Plug ReplacementYourMechanic Price$109.04Shop/Dealer Price$133.39 - $173.60
Show example Kia Optima Spark Plug Replacement prices

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1-800-701-6230 · hi@yourmechanic.com