Mercedes-Benz AMG GT R 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

(155)

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

(155)

Spark Plug Replacement Service

How much does a Spark Plug Replacement cost?

On average, the cost for a Mercedes-Benz AMG GT R Spark Plug Replacement is $383 with $212 for parts and $171 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2018 Mercedes-Benz AMG GT RV8-4.0L TurboService typeSpark Plug ReplacementEstimate$631.78Shop/Dealer Price$755.98 - $1088.09
Show example Mercedes-Benz AMG GT R 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

(155)

Rating Summary
152
1
1
0
1
152
1
1
0
1

Rigoberto

11 years of experience
739 reviews
Rigoberto
11 years of experience
Mercedes-Benz C250 L4-1.8L Turbo - Spark Plugs - Chicago, Illinois
Rigo is a maverick hands down. Don’t take your car for work elsewhere. Especially great at Mercedes—this guy knows his profession! I will be using him for everything related to my car going forward.

Andrew

14 years of experience
103 reviews
Andrew
14 years of experience
Mercedes-Benz ML350 V6-3.5L - Spark Plug Replacement - University Place, Washington
Good service

Rodric

14 years of experience
414 reviews
Rodric
14 years of experience
Mercedes-Benz C250 L4-1.8L Turbo - Spark Plugs - Atlanta, Georgia
Great experience, even learned more about my vehicle. Thank you!

Herman

13 years of experience
86 reviews
Herman
13 years of experience
Mercedes-Benz 500SEL V8-5.0L - Spark Plugs - Miami Beach, Florida
As good as it gets.

Excellent Rating

(155)

Rating Summary
152
1
1
0
1
152
1
1
0
1
Number of Mercedes-Benz Spark Plug Replacement services completed
1705+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
1100+
experts on our platform

Recent articles & questions

How Does Hot Weather Affect Car Hoses?
Hoses Hoses are vital to the operation of your engine. They send vital fluids from one part to another. There are several critical systems under your hood that use hoses, but one of the most important (and most susceptible to...
P0090 OBD-II Trouble Code: Fuel Pressure Regulator 1 Control Circuit
P0090 code definition A P0090 diagnostic trouble code is referencing an issue with the fuel pressure regulator circuit. This code is similar...
B1951 OBD-II Trouble Code: Seat Rear Up/Down Potentiometer Feedback Circuit Open
B1951 means there is an incomplete or open circuit in the rear seat's potentiometer, possibly due to defective electrical components.

Car randomly feels like it loses power and jumps

Hello there. Many different items can cause a lack of power intermittently such as this. The most common would be the spark plugs (https://www.yourmechanic.com/services/spark-plugs-replacement), wires (https://www.yourmechanic.com/services/ignition-cable-spark-plug-wires-replacement), fuel pump (https://www.yourmechanic.com/services/fuel-pump-replacement), fuel filter (https://www.yourmechanic.com/services/fuel-filter-replacement), vacuum leak, exhaust leak or oxygen sensors (https://www.yourmechanic.com/services/oxygen-sensor-replacement)....

Something fell out of the bottom of my car

Hello, thank you for writing in. The parts as described are unidentifiable. The square with two holes may be an exhaust hanger designed to hold the exhaust and allow it to move slightly going over bumps. These are typically made...

Clutch Problem with Jeep Patriot

The clutch system does have several parts that if worn or failing could account for the rattling noise. The system would have to be inspected first hand though to pinpoint the exact issue and estimate the cost. If you desire...

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