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Common Car Repairs Spark Plugs Replacement

Mercedes-Benz GL450 Spark Plug Replacement

Spark plug replacement is often performed as part of your routine maintenance, and the price can vary drastically depending on the year, make, and model of your vehicle.

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Range for All Cars

$115 $475

This range covers an average spark plug replacement. Tell us your car to get a guaranteed price from RepairSmith.

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Mercedes-Benz GL450 Spark Plugs Replacement

RepairSmith offers upfront and competitive pricing. The average cost for Mercedes-Benz GL450 Spark Plugs Replacement is $379. Drop it off at our shop and pick it up a few hours later, or save time and have our Delivery mechanics come to you.

Car
Quoted to
Drop-off
Delivery
Price
2013 Mercedes-Benz GL450 4.6L V8 Turbo
5,006 miles
Rodnesha J  • 
September 30, 2020 12:13 PM  • 
Las Vegas NV 89109
$362
4.10  hrs
2.80  hrs
2007 Mercedes-Benz GL450 4.6L V8 Base
126,000 miles
Lena Q  • 
August 29, 2020 11:03 PM  • 
Sacramento CA 95842
$393
2.30  hrs
2.20  hrs
2007 Mercedes-Benz GL450 4.6L V8
138,000 miles
Elijah M  • 
August 1, 2020 11:01 PM  • 
Pomona CA 91768
$358
5.80  hrs
2.30  hrs
2008 Mercedes-Benz GL450 4.6L V8
155,559 miles
Derrick H  • 
June 6, 2020 4:21 PM  • 
Los Angeles CA 90061
$361
2.20  hrs
2.60  hrs
2013 Mercedes-Benz GL450 4.6L V8 Turbo
91,050 miles
Jon D  • 
May 23, 2020 10:00 AM  • 
Chino Hills CA 91709
$396
6.30  hrs
2.50  hrs
2008 Mercedes-Benz GL450 4.6L V8
95,000 miles
Obi C  • 
May 20, 2020 5:00 AM  • 
Oakland CA 94605
$361
2.20  hrs
2.30  hrs
2007 Mercedes-Benz GL450 4.6L V8 Base
213,853 miles
Raymichael S  • 
May 13, 2020 2:00 PM  • 
Santee CA 92071
$361
4.30  hrs
2.50  hrs
2016 Mercedes-Benz GL450 3.0L V6 Turbo
130,000 miles
Mehmet A  • 
January 29, 2020 3:22 PM  • 
Lake Forest CA 92630
$293
3.70  hrs
2.20  hrs
2010 Mercedes-Benz GL450 4.6L V8
100,000 miles
Marcus D  • 
January 25, 2020 10:37 PM  • 
Lancaster CA 93535
$384
5.40  hrs
2.30  hrs
2008 Mercedes-Benz GL450 4.6L V8
192,000 miles
Gurmeet S  • 
December 3, 2019 6:20 PM  • 
Sacramento CA 95835
$384
7.00  hrs
2.40  hrs
2009 Mercedes-Benz GL450 Base
88,000 miles
Taylor G  • 
October 19, 2019 10:20 PM  • 
Lafayette CA 94549
$411
6.00  hrs
2.10  hrs
2008 Mercedes-Benz GL450 Base
150,000 miles
Robert H  • 
September 30, 2019 2:22 PM  • 
Canyon Country CA 91387
$379
4.90  hrs
2.60  hrs
2012 Mercedes-Benz GL450 Base
110,000 miles
John J  • 
June 29, 2019 2:03 AM  • 
Laguna Niguel CA 92677
$348
6.60  hrs
2.40  hrs
2008 Mercedes-Benz GL450 4.6L V8 Base
141,266 miles
James V  • 
 • 
Oakland CA 94605
$512
4.40  hrs
2.30  hrs
Last Updated:
Oct 2, 2020 4:53 PM
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What are Spark Plugs?

Spark plugs are an important part of your vehicle’s ignition system. Think of them as tiny bolts of lightning that help power your engine. Each cylinder in your vehicle's engine has a spark plug. Electricity from the vehicle's battery runs to the spark plugs, where it is used to ignite the air and fuel mixture in the engine. The power of the explosion forces the piston into the cylinder, which turns the crankshaft, which turns the wheels, which ultimately puts your vehicle in motion. Pretty nifty, right?
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Symptoms of failing Spark Plugs

Poor engine performance

If your spark plugs are worn, your vehicle will lose some of its power. The engine will misfire and hesitate, and your car will have much slower acceleration and a rougher ride. These are all signs that your vehicle might need a spark plug replacement or repair.

Check engine light

Remember that time your check engine light came on, and then you drove a few thousand miles anyway, pretending it wasn’t actually on? How did that work out for you? Busted spark plugs will impact engine performance and emissions, which should illuminate your check engine light. Try paying attention to it this time, it might save you some money in repair or replacement costs. A check engine light is another great sign that you might need a spark plug replacement.

Regularly scheduled maintenance

We know. You don’t use maps and you don’t like chore charts and you don’t need to consult your regularly scheduled maintenance. Good for you. But actually, you do. Spark plugs are considered a part of maintenance, and you should replace these plugs before they die on the job.

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How urgent is replacing Spark Plugs?

If a spark plug or two are dead, the car won’t be running on all cylinders, and you’d be a pretty bad friend if you let your car go to work while sick. Do you want dead sparks on your conscience?

The longer you drive with busted plugs, the more damage you risk incurring to your vehicle. Misfiring sparks can hurt the catalytic converter, and, in rare cases, a portion of the spark plug can fall off into the engine, causing some bigger issues and far more to replace than just a couple old plugs.

The simple thing is the right thing. Get a spark plug replacement on time and minimize the risk of having to replace your entire engine.

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How can we help?

Car repair can be scary, but it doesn't need to be. RepairSmith is here to make it easy.

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12-Month | 12,000-Mile Warranty