Spark Plug Replacement at your home or office.

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Spark Plug Replacement Estimate for Mercedes-Benz GL450

Mercedes-Benz GL450 Spark Plug Replacement costs $144 on average. Following is a breakdown of the labor and parts estimates.

YourMechanic Price
$112 to $193
Labor: $98 -$176
Parts: $14 -$17
Average Dealer price
$159 to 238
Average Shop price
$135 to 204
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
2015 Mercedes-Benz GL450V6-3.0L TurboService typeSpark Plug ReplacementYourMechanic Price$116.14Shop/Dealer Price$156.25 - $196.53
2013 Mercedes-Benz GL450V8-4.6L TurboService typeSpark Plug ReplacementYourMechanic Price$113.26Shop/Dealer Price$152.81 - $191.06
2014 Mercedes-Benz GL450V8-4.6L TurboService typeSpark Plug ReplacementYourMechanic Price$113.26Shop/Dealer Price$152.70 - $190.87
2011 Mercedes-Benz GL450V8-4.6LService typeSpark Plug ReplacementYourMechanic Price$164.42Shop/Dealer Price$222.30 - $275.51
2010 Mercedes-Benz GL450V8-4.6LService typeSpark Plug ReplacementYourMechanic Price$162.79Shop/Dealer Price$220.14 - $272.04
2007 Mercedes-Benz GL450V8-4.6LService typeSpark Plug ReplacementYourMechanic Price$162.79Shop/Dealer Price$220.09 - $271.94
2016 Mercedes-Benz GL450V6-3.0L TurboService typeSpark Plug ReplacementYourMechanic Price$116.22Shop/Dealer Price$156.56 - $197.07
2012 Mercedes-Benz GL450V8-4.6LService typeSpark Plug ReplacementYourMechanic Price$164.42Shop/Dealer Price$222.38 - $275.65
Show example Mercedes-Benz GL450 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 Mercedes-Benz mechanics

Real customer reviews from Mercedes-Benz owners like you.

450 reviews
Ben
36 years of experience
2002 MERCEDES-BENZ CLK320 - SPARK PLUG REPLACEMENT
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282 reviews
Mark
6 years of experience
Thank you, this is the second time "Your Mechanic" has come out to help me. Every call has been a pleasant and quick response. I have been, and will continue to give "Your Mechanic" phone number to family and friends. Thank you!
2007 MERCEDES-BENZ C230 - SPARK PLUG REPLACEMENT
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164 reviews
Theodore
11 years of experience
Very impressed with the service I received.
2011 MERCEDES-BENZ GL450 - BRAKE PADS REPLACEMENT (FRONT)
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61 reviews
Chad
11 years of experience
Chad is very personable and knowledgable about what he does. Stands by his work and is totally the coolest Mechanic I've ever met. He gets to know his client and really works to the clients satisfaction.
2003 MERCEDES-BENZ C320 - SPARK PLUG REPLACEMENT
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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
2015 Mercedes-Benz GL450V6-3.0L TurboService typeSpark Plug ReplacementYourMechanic Price$116.14Shop/Dealer Price$156.25 - $196.53
2013 Mercedes-Benz GL450V8-4.6L TurboService typeSpark Plug ReplacementYourMechanic Price$113.26Shop/Dealer Price$152.81 - $191.06
2014 Mercedes-Benz GL450V8-4.6L TurboService typeSpark Plug ReplacementYourMechanic Price$113.26Shop/Dealer Price$152.70 - $190.87
2011 Mercedes-Benz GL450V8-4.6LService typeSpark Plug ReplacementYourMechanic Price$164.42Shop/Dealer Price$222.30 - $275.51
2010 Mercedes-Benz GL450V8-4.6LService typeSpark Plug ReplacementYourMechanic Price$162.79Shop/Dealer Price$220.14 - $272.04
2007 Mercedes-Benz GL450V8-4.6LService typeSpark Plug ReplacementYourMechanic Price$162.79Shop/Dealer Price$220.09 - $271.94
2016 Mercedes-Benz GL450V6-3.0L TurboService typeSpark Plug ReplacementYourMechanic Price$116.22Shop/Dealer Price$156.56 - $197.07
2012 Mercedes-Benz GL450V8-4.6LService typeSpark Plug ReplacementYourMechanic Price$164.42Shop/Dealer Price$222.38 - $275.65
Show example Mercedes-Benz GL450 Spark Plug Replacement prices

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