Mercedes-Benz E320 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

(7)

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.

Customer Ratings

(7)

Spark Plug Replacement Service

How much does a Spark Plug Replacement cost?

On average, the cost for a Mercedes-Benz E320 Spark Plug Replacement is $180 with $40 for parts and $140 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2003 Mercedes-Benz E320V6-3.2LService typeSpark Plug ReplacementEstimate$1114.86Shop/Dealer Price$1296.23 - $1797.80
1997 Mercedes-Benz E320L6-3.2LService typeSpark Plug ReplacementEstimate$226.27Shop/Dealer Price$249.55 - $312.17
1998 Mercedes-Benz E320V6-3.2LService typeSpark Plug ReplacementEstimate$951.15Shop/Dealer Price$1089.21 - $1481.41
2005 Mercedes-Benz E320L6-3.2L Turbo DieselService typeSpark Plug ReplacementEstimate$650.19Shop/Dealer Price$766.19 - $1103.95
2001 Mercedes-Benz E320V6-3.2LService typeSpark Plug ReplacementEstimate$1239.75Shop/Dealer Price$1457.68 - $2072.14
1999 Mercedes-Benz E320V6-3.2LService typeSpark Plug ReplacementEstimate$1239.75Shop/Dealer Price$1450.69 - $2059.89
1994 Mercedes-Benz E320L6-3.2LService typeSpark Plug ReplacementEstimate$245.95Shop/Dealer Price$274.22 - $351.65
1996 Mercedes-Benz E320L6-3.2LService typeSpark Plug ReplacementEstimate$226.27Shop/Dealer Price$249.59 - $312.24
Show example Mercedes-Benz E320 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


Meet some of our expert Mercedes-Benz mechanics

Real customer reviews from Mercedes-Benz owners like you.

Excellent Rating

(7)

Rating Summary
6
0
0
0
1
6
0
0
0
1

Excellent Rating

(7)

Rating Summary
6
0
0
0
1
6
0
0
0
1
Number of Mercedes-Benz E320 Spark Plug Replacement services completed
77+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
1100+
experts on our platform

Recent articles & questions

P2048 OBD-II Trouble Code: Reductant Injector Circuit Low Bank 1 Unit 1
P2048 means there is a low circuit in the reductant injector circuit in the exhaust system.
How to Find the Title to an Abandoned Car
You’re You’re driving down the road when you notice a car in rough shape with flat tires and maybe some broken glass parked on the side. At first you think nothing of it, but then you realize it’s a 1973...
P3475 OBD-II Trouble Code: Cylinder 10 Deactivation/Intake Valve Control Circuit Low
P3475 means a malfunction in engine cylinder number 10 in which the vehicle will be unable to run in lower modes and may cause lower fuel efficiency.

Engine knocking and engine light on

Hello. If the Check Engine Light is on, then it would help to know what codes are coming up. The computer codes would help a mechanic find a starting point to determine the problem. From the description of the problem,...

Relay keeps getting hot and turning truck off

Hello. Your vehicle has over ten identical relays in the vehicle. You will need to be more specific with what relay is overheating. The most likely cause of an overheating relay would be a fuel pump relay (https://www.yourmechanic.com/services/fuel-pump-relay-replacement) getting hot...

Transmission control module

This may be a result of low transmission fluid (https://www.yourmechanic.com/services/transmission-fluid-service) or potentially a faulty transmission control module. A faulty transmission control module may cause a delay in acceleration or erratic shifting of gears. The transmission control module has various sensors...

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 (844) 997-3624 · hi@yourmechanic.com