Mercedes-Benz ML350 Spark Plug Replacement at your home or office.

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Spark Plug Replacement Estimate for Mercedes-Benz ML350

Mercedes-Benz ML350 Spark Plug Replacement costs $436 on average. Following is a breakdown of the labor and parts estimates.

YourMechanic Price
$256 to $782
Labor: $112 -$342
Parts: $144 -$440
Average Dealer price
$435 to 1281
Average Shop price
$315 to 918
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Our mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
Get a quote
CarServiceEstimateShop/Dealer Price
2015 Mercedes-Benz ML350V6-3.0L Turbo DieselService typeSpark Plug ReplacementEstimate$668.62Shop/Dealer Price$834.65 - $1249.21
2010 Mercedes-Benz ML350V6-3.5LService typeSpark Plug ReplacementEstimate$406.51Shop/Dealer Price$507.40 - $744.80
2009 Mercedes-Benz ML350V6-3.5LService typeSpark Plug ReplacementEstimate$413.51Shop/Dealer Price$512.63 - $748.71
2013 Mercedes-Benz ML350V6-3.0L Turbo DieselService typeSpark Plug ReplacementEstimate$726.94Shop/Dealer Price$913.03 - $1375.44
2005 Mercedes-Benz ML350V6-3.7LService typeSpark Plug ReplacementEstimate$838.15Shop/Dealer Price$1040.50 - $1534.64
2013 Mercedes-Benz ML350V6-3.5LService typeSpark Plug ReplacementEstimate$844.76Shop/Dealer Price$1038.62 - $1466.84
2008 Mercedes-Benz ML350V6-3.5LService typeSpark Plug ReplacementEstimate$413.51Shop/Dealer Price$510.88 - $745.64
2007 Mercedes-Benz ML350V6-3.5LService typeSpark Plug ReplacementEstimate$406.51Shop/Dealer Price$505.75 - $741.92
Show example Mercedes-Benz ML350 Spark Plug Replacement prices

Spark Plug Replacement Service

What are spark plugs and how do they work?

Spark plugs are one of the key components of your vehicle’s ignition system. They ignite gasoline and air inside of your engine. This gives your engine the power to propel you down the road. The spark plug takes high voltage electricity from the ignition coil and creates a spark at just right moment during the engine’s combustion cycle. This gives the engine the best mix of power, fuel economy and low emissions. However, the electrode at the end of the spark plug eventually wears out and can cause performance issues.

Spark plugs-MATROX-1

When should you replace spark plugs?

Replacement should follow the vehicle maintenance schedule. This will be listed in the vehicle’s owner’s manual. Some cars require regular replacement at 30k, 60k or 100k miles. It is possible in some cases that a spark plug might fail before the service schedule, but it’s not typically common.

Avoiding spark plug replacement can cause:

  • Difficulty starting your car.
  • Check engine light for a misfire code.
  • Flashing check engine light during acceleration for misfire, this can cause engine damage.
  • Reduced fuel economy and/or power.
  • Rough idle and/or unexplained engine vibration.
  • Failed State emission testing.

Even if only one spark plug is found to be faulty, they should always be replaced in sets. Most engines will require 4,6, or 8 spark plugs.

How do mechanics replace spark plugs?

Spark plugs are threaded into the engine’s cylinder head(s). Most cars have one plug per cylinder, so a four-cylinder engine will have four plugs, a six-cylinder engine will have six plugs, and so forth. The mechanic will:

  • Have the correct spark plugs on hand for your vehicle
  • Pull any diagnostic trouble codes that may be related to worn spark plugs.
  • Remove the original spark plugs and look at removed spark plugs for any clues indicating engine mis-operation exists; such as oil burning, excessively rich mixture, pre-ignition damage etc. Inform owner of any found unusual conditions.
  • Install new plugs using a torque wrench.
  • Finally, a road test of the vehicle to confirm normal operation.

Is it safe to drive with worn spark plugs?

Yes, but spark plugs that are worn enough to cause engine-misfiring have the potential to cause engine damage and overheating of the catalytic converter. Regardless of the age of the plugs, or mileage, if the engine misfires or runs poorly, the plugs should be inspected for defects. Generally, spark plug failure will not keep the engine from running, but in cases of extreme wear, you may experience a limitation in the speed at which you can drive the car. If the maintenance schedule says the plugs should be replaced, it is best to do so promptly.

When having spark plugs replaced keep in mind:

  • High-speed driving may accelerate spark plug wear. Consider earlier than required inspection and tune-up if you operate the car in severe conditions.
  • Plugs should always be promptly replaced per the manufacturer maintenance schedule even if they appear to be working perfectly.
  • If your vehicle is equipped with spark plug wires (as opposed to a coil-on-plug system), the wires should be replaced at the same time. This may increase the cost of your repair.
  • It is possible that when doing a spark plug replacement, your vehicle may also need additional parts like ignition coils, this will add to the repair cost.
  • Some engines require that the intake manifold be removed while replacing spark plugs. This may increase the parts and labor cost for the repair.
  • Leaking valve cover gaskets, which have let oil get in contact with the spark plugs, coils or wires, may be the cause of ignition system issues. Valve cover gaskets will need to be replaced in addition to the spark plugs, wires or coils. This will add to the repair cost.

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Excellent Rating


YourMechanic Mercedes-Benz ML350 Spark Plugs Replacement Service

Average Rating

5/5

Number of Reviews

10

Rating Summary
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Meet some of our expert Mercedes-Benz mechanics

Real customer reviews from Mercedes-Benz owners like you.

Mike

12 years of experience
113 reviews
Mike
12 years of experience
Mercedes-Benz ML350 - Spark Plugs - Raleigh, North Carolina
Friendly and knowledgeable. Appointment took longer than expected but he stayed to get the job done. Didn't rush the work. Thorough inspection and clean up. So glad I used Your Mechanic. Price couldn't be beat for the value of the work done. Thx!

Michael

13 years of experience
57 reviews
Michael
13 years of experience
Mercedes-Benz ML350 - Spark Plugs - Edgewater, New Jersey
Michael was excellent!! he took time to explain causes of my vehicle's problems. When he realized he will not be able to arrive on time he informed me with the valid reason. He is professional, genuine and frank. He is excellent!!!

Ricardo

13 years of experience
339 reviews
Ricardo
13 years of experience
Mercedes-Benz ML350 - Spark Plugs - Torrance, California
Hi is very kind and did all he could to fix the problem. He stated that he did not have the equipment and that I should bring it into the dealership. I appreciate the convenience provided by your company and the courtesy and professionalism of Recardo and your company.

Joshua

26 years of experience
709 reviews
Joshua
26 years of experience
Mercedes-Benz ML350 - Spark Plugs - Vallejo, California
Joshua was excellent, good work, good recommendations and very friendly and professional. I have already referred him to friends.
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
CarServiceEstimateShop/Dealer Price
2015 Mercedes-Benz ML350V6-3.0L Turbo DieselService typeSpark Plug ReplacementEstimate$668.62Shop/Dealer Price$834.65 - $1249.21
2010 Mercedes-Benz ML350V6-3.5LService typeSpark Plug ReplacementEstimate$406.51Shop/Dealer Price$507.40 - $744.80
2009 Mercedes-Benz ML350V6-3.5LService typeSpark Plug ReplacementEstimate$413.51Shop/Dealer Price$512.63 - $748.71
2013 Mercedes-Benz ML350V6-3.0L Turbo DieselService typeSpark Plug ReplacementEstimate$726.94Shop/Dealer Price$913.03 - $1375.44
2005 Mercedes-Benz ML350V6-3.7LService typeSpark Plug ReplacementEstimate$838.15Shop/Dealer Price$1040.50 - $1534.64
2013 Mercedes-Benz ML350V6-3.5LService typeSpark Plug ReplacementEstimate$844.76Shop/Dealer Price$1038.62 - $1466.84
2008 Mercedes-Benz ML350V6-3.5LService typeSpark Plug ReplacementEstimate$413.51Shop/Dealer Price$510.88 - $745.64
2007 Mercedes-Benz ML350V6-3.5LService typeSpark Plug ReplacementEstimate$406.51Shop/Dealer Price$505.75 - $741.92
Show example Mercedes-Benz ML350 Spark Plug Replacement prices

How can we help?

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