logo

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

Our mobile mechanics offer services 7 days a week. Upfront and transparent pricing.

Estimate price near me

Service Location

Customer Ratings

(14)

Included for free with this service

Online Booking

Mechanic comes to you

12-month / 12k-mile warranty

Free 50 point safety inspection

Our certified mobile mechanics can come to your home or office 7 days a week between 7 AM and 9 PM.

See availability

Customer Ratings

(14)

Spark Plug Replacement Service

How much does a Spark Plug Replacement cost?

On average, the cost for a Mercedes-Benz ML350 Spark Plug Replacement is $340 with $144 for parts and $196 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2013 Mercedes-Benz ML350V6-3.0L Turbo DieselService typeSpark Plug ReplacementEstimate$852.96Shop/Dealer Price$1007.79 - $1446.77
2014 Mercedes-Benz ML350V6-3.0L Turbo DieselService typeSpark Plug ReplacementEstimate$836.74Shop/Dealer Price$986.01 - $1420.81
2011 Mercedes-Benz ML350V6-3.5LService typeSpark Plug ReplacementEstimate$769.29Shop/Dealer Price$851.90 - $1075.60
2013 Mercedes-Benz ML350V6-3.5LService typeSpark Plug ReplacementEstimate$949.57Shop/Dealer Price$1077.24 - $1436.14
2008 Mercedes-Benz ML350V6-3.5LService typeSpark Plug ReplacementEstimate$769.29Shop/Dealer Price$860.40 - $1090.47
2003 Mercedes-Benz ML350V6-3.7LService typeSpark Plug ReplacementEstimate$1078.01Shop/Dealer Price$1238.61 - $1694.44
2010 Mercedes-Benz ML350V6-3.5LService typeSpark Plug ReplacementEstimate$769.29Shop/Dealer Price$851.99 - $1075.74
2012 Mercedes-Benz ML350V6-3.0L Turbo DieselService typeSpark Plug ReplacementEstimate$778.42Shop/Dealer Price$913.18 - $1304.30
Show example Mercedes-Benz ML350 Spark Plug Replacement prices

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.

Fast and easy service at your home or office

Backed by 12-month, 12.000-mile guarantee

Number of Mercedes-Benz ML350 Spark Plug Replacement services completed
154+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
1100+
experts on our platform
Yourmechanic was featured in

New York Times NBC CBS Forbes INC Tech Crunch

Learn more about us

Meet some of our expert Mercedes-Benz mechanics

Real customer reviews from Mercedes-Benz owners like you.

Excellent Rating

(14)
Rating Summary
14
0
0
0
0
14
0
0
0
0

Mohammed

7 years of experience
152 reviews
Request Mohammed
Mohammed
7 years of experience
Request Mohammed
by mohan virmani
ML350 2014 - Spark Plugs - Cary, NC
Amazing service and very professional.

Mike

10 years of experience
177 reviews
Request Mike
Mike
10 years of experience
Request Mike
by Britany Waddell
ML350 2013 - Spark Plugs - Raleigh, NC
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!

Colby

13 years of experience
34 reviews
Request Colby
Colby
13 years of experience
Request Colby
by Donna Robertson
ML350 2013 - Air Filter - Denver, CO
Colby was early, and a good communicator.

Jose

6 years of experience
63 reviews
Request Jose
Jose
6 years of experience
Request Jose
by Roger Michael Pimentel
ML350 2004 - Smoke from engine or exhaust - Daly City, CA
Jose did a great job assessing the issues with my vehicle and effectively communicating them to me. Thanks!

Excellent Rating

(14)
Rating Summary
14
0
0
0
0
14
0
0
0
0
Number of Mercedes-Benz ML350 Spark Plug Replacement services completed
154+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
1100+
experts on our platform
Yourmechanic was featured in

New York Times NBC CBS Forbes INC Tech Crunch

Learn more about us

Recent articles & questions

Symptoms of a Bad or Failing Headlight Bulb
If the headlights are dim, flickering on and off, or will not come on at all, you may need to replace the headlight bulbs.
Read more
A Buyer’s Guide to the 2012 Mitsubishi Eclipse
2012 2012 marks the end of an era for the Eclipse and Mitsubishi sends the sporty little car off in style. As affordable sports cars go, the Eclipse has served its segment well with stylish looks, respectable performance, and a...
Read more
Veteran and Military Driver Laws and Benefits in North Carolina
The The state of North Carolina offers a number of benefits and perks for those Americans who have either served in an Armed Forces branch in the past, or are current active military members. Driver’s license veteran designation Due to...
Read more

Turn signal won't blink

Hi there. If the turn signals will come on, but will not blink then the flasher module has failed. This module is what turns the lights off and on when the turn signal or hazards are used. It is possible...
Read more

My front bumper popped out in the corner but doesn't shake

Hi there, thanks for writing in. Anytime your vehicle strikes a solid object, the potential of damage of other components near that area exists. Beyond the simple body damage on the front end, it is possible that some of your...
Read more

So I just changed my oil in a 2011 dodge charger for the 3rd time the oil pressure is going from 30 to about 80 is this normal

Hi Cassandra. As long as you've used the recommended oil viscosity and correct filter, you should be OK with the range you are describing. It's typical for oil pressure to range anywhere from 25 on the low end to 40...
Read more
  1. Home
  2. Estimates
  3. Mercedes-Benz
  4. ML350
  5. Spark Plug Replacement

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 (855) 347-2779 · hi@yourmechanic.com

Read FAQ
GET A QUOTE