Mercedes-Benz G550 Spark Plug Replacement Costs

Estimate price near me

Service Location

Customer Ratings

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

Spark Plug Replacement Service

How much does a Spark Plug Replacement cost?

On average, the cost for a Mercedes-Benz G550 Spark Plug Replacement is $408 with $212 for parts and $196 for labor. Prices may vary depending on your location.

Car	Service	Estimate	Shop/Dealer Price
2014 Mercedes-Benz G550V8-5.5L	Service typeSpark Plug Replacement	Estimate$770.84	Shop/Dealer Price$918.12 - $1340.12
2010 Mercedes-Benz G550V8-5.5L	Service typeSpark Plug Replacement	Estimate$835.06	Shop/Dealer Price$983.91 - $1417.45
2012 Mercedes-Benz G550V8-5.5L	Service typeSpark Plug Replacement	Estimate$776.67	Shop/Dealer Price$924.29 - $1356.92
2011 Mercedes-Benz G550V8-5.5L	Service typeSpark Plug Replacement	Estimate$835.06	Shop/Dealer Price$983.98 - $1417.58
2020 Mercedes-Benz G550V8-4.0L Turbo	Service typeSpark Plug Replacement	Estimate$858.38	Shop/Dealer Price$1006.64 - $1436.44
2017 Mercedes-Benz G550V8-4.0L Turbo	Service typeSpark Plug Replacement	Estimate$745.98	Shop/Dealer Price$856.57 - $1178.47
2018 Mercedes-Benz G550V8-4.0L Turbo	Service typeSpark Plug Replacement	Estimate$687.58	Shop/Dealer Price$797.15 - $1118.28
2009 Mercedes-Benz G550V8-5.5L	Service typeSpark Plug Replacement	Estimate$835.06	Shop/Dealer Price$983.98 - $1417.58

Show example Mercedes-Benz G550 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

7

0

0

0

0

7

0

0

0

0

SEE REVIEWS NEAR ME

Dan

40 years of experience

1080 reviews

Dan

40 years of experience

by Brenton

Mercedes-Benz G550 V8-5.5L - Mass Airflow Sensor - Cumming, Georgia

Dan was quick and efficient with many different things. Everything is working great now.

Tabitha

18 years of experience

379 reviews

Request Tabitha

Tabitha

18 years of experience

Request Tabitha

by Richard

Mercedes-Benz G550 V8-5.5L - Headlight Bulb Replacement (Driver Side Low Beam) - La Jolla, California

very knowledgable, patient and good comunicator., detailed explanations.

Sergio

11 years of experience

204 reviews

Sergio

11 years of experience

by Brenton

Mercedes-Benz G550 V8-5.5L - Pre-purchase Car Inspection - San Antonio, Texas

Sergio was responsive and on-time. He was also very throughout with his inspection.

Jason

33 years of experience

617 reviews

Jason

33 years of experience

by Richard

Mercedes-Benz G550 V8-5.5L - Car is not starting - Saratoga, California

Jason is very knowledgeable and great at what he does. He is punctual and very friendly. I highly recommend him for any type of car service.

Excellent Rating

(7)

Rating Summary

7

0

0

0

0

7

0

0

0

0

SEE REVIEWS NEAR ME

Recent articles & questions

How Long Does an AC Control Switch Last?

Every Every year, vehicles become more and more complex, with computer components replacing mechanical parts. This is very apparent in your car’s air conditioning system, which relies on an AC control module to deliver the ideal heating and air conditioning...

The Guide To Colored Curb Zones in South Dakota

The The curb zone guide to South Dakota Residents who live and drive in South Dakota know that they need to pay attention when they are driving to keep safe and to be sure they are abiding by the laws...

Symptoms of a Bad or Failing Headlight Door Motor

If the headlight doors are stuck open, stuck closed, or make a grinding noise, you may need to replace the headlight door motor.

How do I lock the doors with the key?

Locking your car doors with your key is very easy. Simply insert the key into the key hole on the driver’s door, and turn the key counterclockwise until you hear the doors lock. This will lock all of the doors,...

Possible replacement parts for anti-lock brakes - 1991 Lincoln Mark VII

These sensors are available, but not on every street corner. You can search on the Internet, or you might consider joining the Lincoln Mark VII owners club. There are numerous references on their forums that address this issue. A professional...

Car wont start eps light is on help!!!

Hi Don. Thanks for sending the question tonight. The EPS light is a warning light that indicates a problem with the electronic power steering system on your Hyundai Elantra. In most cases, it does not impact the vehicle's ability to...

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