Mercedes-Benz CLK350 Spark Plug Replacement at your home or office.

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

Get an upfront price

Service Location

Average rating from customers who
received a Spark Plugs Replacement.
Learn More

$255.75 - $278.75

Price range for all vehicles


YourMechanic Benefits

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.

Average rating from customers who
received a Spark Plugs Replacement.
Learn More


Spark Plug Replacement Estimate for Mercedes-Benz CLK350

Mercedes-Benz CLK350 Spark Plug Replacement costs $265 on average.

CarServiceEstimateShop/Dealer Price
2006 Mercedes-Benz CLK350V6-3.5LService typeSpark Plug ReplacementEstimate$406.51Shop/Dealer Price$507.25 - $744.54
2007 Mercedes-Benz CLK350V6-3.5LService typeSpark Plug ReplacementEstimate$415.01Shop/Dealer Price$517.97 - $756.92
2008 Mercedes-Benz CLK350V6-3.5LService typeSpark Plug ReplacementEstimate$413.51Shop/Dealer Price$512.63 - $748.71
2009 Mercedes-Benz CLK350V6-3.5LService typeSpark Plug ReplacementEstimate$406.51Shop/Dealer Price$511.51 - $752.00
Show example Mercedes-Benz CLK350 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.

Fast and easy service at your home or office

Backed by 12-month, 12.000-mile guarantee


Meet some of our expert Mercedes-Benz mechanics

Real customer reviews from Mercedes-Benz owners like you.

Excellent Rating


YourMechanic Mercedes-Benz CLK350 Service

Average Rating

4.8/5

Number of Reviews

79

Rating Summary
74
2
1
0
2
74
2
1
0
2

Antonios

17 years of experience
56 reviews
Antonios
17 years of experience
Mercedes-Benz CLK350 - Spark Plugs - West Roxbury, Massachusetts
This the second time Tony has worked on my car and like the last time his work and explanation about my car was exceptional. I would recommend Tony to anyone in a minute. You can’t beat the service, convenience, and price. I’m a very, very satisfied customer. Rating from 1 - 10 Tony gets an 11!!!

Keith

17 years of experience
328 reviews
Keith
17 years of experience
Mercedes-Benz CLK350 - Headlamp Assembly - Left, Right - Orlando, Florida
did satisfactory job, but we found one part was damaged from my supplier so could only put on one headlight assy...will get a replacement and have Keith back to put it on.....hopefully at about half the cost of the initial appt.

Tabitha

16 years of experience
220 reviews
Tabitha
16 years of experience
Mercedes-Benz CLK350 - 80,000 Miles Maintenance Service - Solana Beach, California
Tabitha is great at what she does! She is very knowledgeable about was able to figure out what was going on with an oil leak in my car that previous mechanics were not. She worked quickly yet thoroughly and was able to work with my timetable. I appreciated her professionalism and would absolutely have her work on my car in the future. Thank you, Tabitha!

Charles

10 years of experience
69 reviews
Charles
10 years of experience
Mercedes-Benz CLK350 - Coolant Temperature Switch (Sensor) - Fort Lauderdale, Florida
Nice and friendly and on time

Excellent Rating


YourMechanic Mercedes-Benz CLK350 Service

Average Rating

4.8/5

Number of Reviews

79

Rating Summary
74
2
1
0
2
74
2
1
0
2
Number of Mercedes-Benz CLK350 services completed
869+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
900+
experts on our platform

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