Mercedes-Benz E320 Spark Plug Replacement at your home or office.

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Spark Plug Replacement Estimate for Mercedes-Benz E320

Mercedes-Benz E320 Spark Plug Replacement costs $445 on average. Following is a breakdown of the labor and parts estimates.

YourMechanic Price
$98 to $755
Labor: $80 -$270
Parts: $18 -$485
Average Dealer price
$142 to 1286
Average Shop price
$119 to 896
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
1997 Mercedes-Benz E320L6-3.2LService typeSpark Plug ReplacementEstimate$155.47Shop/Dealer Price$193.60 - $242.72
1998 Mercedes-Benz E320V6-3.2LService typeSpark Plug ReplacementEstimate$721.41Shop/Dealer Price$899.88 - $1296.10
2009 Mercedes-Benz E320V6-3.0L Turbo DieselService typeSpark Plug ReplacementEstimate$1080.45Shop/Dealer Price$1349.88 - $2097.55
2001 Mercedes-Benz E320V6-3.2LService typeSpark Plug ReplacementEstimate$1005.57Shop/Dealer Price$1247.86 - $1843.35
1995 Mercedes-Benz E320L6-3.2LService typeSpark Plug ReplacementEstimate$138.75Shop/Dealer Price$175.85 - $233.92
2006 Mercedes-Benz E320L6-3.2L Turbo DieselService typeSpark Plug ReplacementEstimate$559.75Shop/Dealer Price$695.95 - $1046.04
2005 Mercedes-Benz E320V6-3.2LService typeSpark Plug ReplacementEstimate$844.83Shop/Dealer Price$1039.72 - $1532.02
1999 Mercedes-Benz E320V6-3.2LService typeSpark Plug ReplacementEstimate$1005.57Shop/Dealer Price$1244.10 - $1836.76
Show example Mercedes-Benz E320 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 E320 Spark Plugs Replacement Service

Average Rating

4.3/5

Number of Reviews

6

Rating Summary
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Meet some of our expert Mercedes-Benz mechanics

Real customer reviews from Mercedes-Benz owners like you.

David

14 years of experience
597 reviews
David
14 years of experience
Mercedes-Benz E320 - Spark Plugs - Dublin, California
David is an obvious expert and very professional. He changed the spark plugs on my Mercedes, the car run much better than before, I can tell the difference. I will certainly seek for his services again! Thank you Jerry

David

14 years of experience
597 reviews
David
14 years of experience
Mercedes-Benz E320 - Spark Plugs - Vallejo, California
david was very helpful and completed job in an timely manner. i was very impressed by his extensive experience in mercedes benz brand. very friendly and a very good mechanic who's services i would use again.

Rey

23 years of experience
103 reviews
Rey
23 years of experience
Mercedes-Benz E320 - Spark Plugs - Los Angeles, California
Rey is undoubtedly the best most Knowledgeable Mechanic if ever experienced.As a matter of fact I want no one to look or touch my cars again. If you lose him your making a big mistake.This man really cares not only for your car but about the customer.In my 56 years of life & 10 cars if you had 10 more like him It's to yours & your customers advantage .IM sure He's under paid because he is an Invaluable mechanic & man. 5 STARS is not enough 12 is more like It .Rey is one of a kind.I even offered him a tip & he said he did not except tips .But I do have one for him,Do not change Rey & the LORD WILL CONTNIUE TO BLESS YOU!

Mark

9 years of experience
349 reviews
Mark
9 years of experience
Mercedes-Benz E320 - Spark Plug Replacement - Menlo Park, California
10/10, really! I came back to YM.com with my second car for Mark to diagnose some suspicious engine noise - cracked belt! Saved thousands due to timely preventive maintenance! Thanks, Mark!
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
1997 Mercedes-Benz E320L6-3.2LService typeSpark Plug ReplacementEstimate$155.47Shop/Dealer Price$193.60 - $242.72
1998 Mercedes-Benz E320V6-3.2LService typeSpark Plug ReplacementEstimate$721.41Shop/Dealer Price$899.88 - $1296.10
2009 Mercedes-Benz E320V6-3.0L Turbo DieselService typeSpark Plug ReplacementEstimate$1080.45Shop/Dealer Price$1349.88 - $2097.55
2001 Mercedes-Benz E320V6-3.2LService typeSpark Plug ReplacementEstimate$1005.57Shop/Dealer Price$1247.86 - $1843.35
1995 Mercedes-Benz E320L6-3.2LService typeSpark Plug ReplacementEstimate$138.75Shop/Dealer Price$175.85 - $233.92
2006 Mercedes-Benz E320L6-3.2L Turbo DieselService typeSpark Plug ReplacementEstimate$559.75Shop/Dealer Price$695.95 - $1046.04
2005 Mercedes-Benz E320V6-3.2LService typeSpark Plug ReplacementEstimate$844.83Shop/Dealer Price$1039.72 - $1532.02
1999 Mercedes-Benz E320V6-3.2LService typeSpark Plug ReplacementEstimate$1005.57Shop/Dealer Price$1244.10 - $1836.76
Show example Mercedes-Benz E320 Spark Plug Replacement prices

How can we help?

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