Spark Plug Replacement at your home or office in Needham.

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Service Area

Average rating from customers who
received a Spark Plugs Replacement.
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$96.47 - $642.49

Price range for all vehicles


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Our certified mobile mechanics can come to your home or office 7 days a week between 7 AM and 9 PM.

Average rating from customers who
received a Spark Plugs Replacement.
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Recent Spark Plug Replacement reviews in Needham

Excellent Rating


YourMechanic Spark Plug Replacement Service

Average Rating

4.9/5

Number of Reviews

3,638

Rating Summary
3,423
128
16
15
56
3,423
128
16
15
56

Dan

37 years of experience
736 reviews
Dan
37 years of experience
Dan arrived on time. He brought all of the tools and repair parts required to do the work. Dan explains the work well to the car owner. And best, of all, he does a great job on the repairs. Thank you, for an excellent experience.
Very professional and will always request Dan

Maxwell

16 years of experience
390 reviews
Maxwell
16 years of experience
Maxwell arrived on time and explained everything that he would be doing. He was great at helping me understand my vehicles systems. Upon completion I was one happy camper. Highly recommended!!
Max is very knowledgable, highly experienced and professional. Did an outstanding job on my 2012 Mercedes E350. He knows his work and enjoys doing it. I learned quite a lot about "German Engineering" under the hood from him. He's very friendly and courteous. I couldn't be more satisfied. Highly recommend. 10/10

Thomas

11 years of experience
73 reviews
Thomas
11 years of experience
Does excellent work, fast, and professional

Kevin

22 years of experience
258 reviews
Kevin
22 years of experience
awesome

Leslie

12 years of experience
75 reviews
Leslie
12 years of experience
I appreciate Leslie coming out. First he show up on time, got right to providing the mechanical service needed for my vehicle and was very informative on what the problem was for my vehicle. I would recommend him 100%.

Patrick

31 years of experience
1054 reviews
Patrick
31 years of experience
Patrick is just awesome. It was cold and wet out this morning but he was on time and ready to power through it. Even fixed my poor attempts at repairing it/making things more difficult and challenging. Finished on time even. You'll be happy with Patrick as your mechanic.

Jesus

4 years of experience
23 reviews
Jesus
4 years of experience
He was quick and efficient, and he was able to show up earlier than scheduled, which worked out perfectly for me!

Diego

19 years of experience
446 reviews
Diego
19 years of experience
As always, I can trust Diego when it comes to working on my BMW.

Miguel

33 years of experience
251 reviews
Miguel
33 years of experience
On time and personable. Very knowledgeable. Would use again.

Jonathan

11 years of experience
146 reviews
Jonathan
11 years of experience
Excellent mechanic and very intelligent. It's nice to know someone who has knowledge working on vehicles!


How much does Spark Plug Replacement cost in Needham?

It depends on the type of car you drive and the auto repair shop you go to in Needham. Our mechanics in Needham are mobile, which means they don't have the overhead that repair shops have. They provide you convenience by coming to your home or office in Needham.

Cars Estimate Parts Cost Labor Cost Savings Average Dealer Price
2009 Mazda 3 $170 $89.72 $79.99 13% $197.22
2007 Nissan Titan $426 $281.95 $143.98 10% $475.45
2015 Ford Transit-350 $318 $173.94 $143.98 13% $367.44
2011 BMW 750Li $324 $164.48 $159.98 14% $379.48
2007 Mercedes-Benz CL550 $416 $271.63 $143.98 10% $465.13
2006 Jaguar Vanden Plas $188 $68.24 $119.98 17% $229.49

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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.

Fast and easy service at your home or office

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Backed by 12-month, 12.000-mile guarantee


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.

1-800-701-6230 · hi@yourmechanic.com