Subaru WRX STI Ignition Coil Replacement at your home or office.

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received a Ignition Coil Replacement.
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$329.52 - $363.09

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Average rating from customers who
received a Ignition Coil Replacement.
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Ignition Coil Replacement Estimate for Subaru WRX STI

Subaru WRX STI Ignition Coil Replacement costs $346 on average.

CarServiceEstimateShop/Dealer Price
2013 Subaru WRX STIH4-2.5L TurboService typeIgnition Coil ReplacementEstimate$564.70Shop/Dealer Price$689.79 - $1019.98
2017 Subaru WRX STIH4-2.5L TurboService typeIgnition Coil ReplacementEstimate$539.86Shop/Dealer Price$658.84 - $970.47
2014 Subaru WRX STIH4-2.5L TurboService typeIgnition Coil ReplacementEstimate$573.20Shop/Dealer Price$697.16 - $1026.51
2016 Subaru WRX STIH4-2.5L TurboService typeIgnition Coil ReplacementEstimate$539.86Shop/Dealer Price$661.69 - $975.47
2015 Subaru WRX STIH4-2.5L TurboService typeIgnition Coil ReplacementEstimate$531.56Shop/Dealer Price$646.39 - $950.24
2018 Subaru WRX STIH4-2.5L TurboService typeIgnition Coil ReplacementEstimate$539.86Shop/Dealer Price$653.47 - $961.09
Show example Subaru WRX STI Ignition Coil Replacement prices

Ignition Coil Replacement Service

What is an ignition coil and how does it work?

An ignition coil transforms ignition voltage (12 volts) to the very high voltage pulses (20,000 volts or more) that fire the spark plugs. The number of ignition coils varies depending on car model and year of production. Older cars will have one coil covering all engine cylinders while newer cars may have a coil-on-plug type arrangement — that is every cylinder will have its own dedicated ignition coil.

Ignition Coils

When to consider replacing an ignition coil:

  • Hard starting or no start. Ignition coils are subject to heat damage and electrical overload, both of which can cause partial or total failure. If the coil is faulty, you may have difficulty starting your car or it may not start at all.
  • Misfiring, loss of power, poor acceleration. Once the car is running, a bad ignition coil can cause poor operation of the engine. Should you have misfiring or loss of power, faulty ignition coils would be among the list of causes a mechanic would investigate. The Check Engine Light will often come on with a trouble code(s) indicating which cylinders are involved.

How do mechanics replace the ignition coil?

  • The ignition is checked to assure it is in the “off” position.
  • For single coils that supply all cylinders, the coil is disconnected from either a bracket located in the engine compartment or, in some cases, is removed from within the distributor. The replacement coil is secured and all electrical connections reattached. If the distributor was removed for any reason, the timing is adjusted as required.
  • For individual coil-on-plug applications, the coil is detached from the top of the individual spark plug and replaced.
  • Once the coil is securely in place, all electrical connections are reattached, and timing adjusted as needed, the car is road tested to ensure normal operation.

Is it safe to drive with an ignition coil problem?

Yes. A malfunctioning ignition coil will cause loss of power and lower fuel efficiency but that will not present an immediate safety issue. If the coil malfunction is causing misfiring, this will allow unburned fuel to enter and permanently damage the catalytic converter from overheating.

When replacing an ignition coil keep in mind:

  • Ignition coil failure can be caused by faulty spark plugs or wires. The mechanic will inspect and may recommend replacement of those components.
  • In a coil-on-plug ignition system, if only one coil fails, you need only replace the faulty coil. Remaining functioning coils can be left in place.
  • In systems with the coil located in the distributor, it may be more cost-effective to replace the entire distributor rather than remove and replace just the coil.

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Excellent Rating


YourMechanic Subaru WRX STI Service

Average Rating

5/5

Number of Reviews

5

Rating Summary
5
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5
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Omar

10 years of experience
274 reviews
Omar
10 years of experience
Subaru WRX STI - Clunking or knocking noise from wheels - Pompano Beach, Florida
Showed up early. Very knowledgeable. Polite. Was a pleasure to have him work for me

Andrew

9 years of experience
238 reviews
Andrew
9 years of experience
Subaru WRX STI - Brake Pads Replacement (Front, Rear) - Elkridge, Maryland
showed up a little early and got the job done and we talked about the new corvette after the work was done... great experience... recomended

Ryan

20 years of experience
26 reviews
Ryan
20 years of experience
Subaru WRX STI - Battery will not hold a charge - Greensboro, North Carolina
Ryan was great. Professional, knowledgeable, and fixed the problem on site. Will ask for him specifically in the future.

Joseph

16 years of experience
115 reviews
Joseph
16 years of experience
Subaru WRX STI - Pre-purchase Car Inspection - Owings Mills, Maryland
Joseph was GREAT! He did a very thorough inspection finding several issues with the car I was thinking of purchasing. He took detailed pictures and added voice notes detailing his findings. I'll definitely request and recommend him again.

Excellent Rating


YourMechanic Subaru WRX STI Service

Average Rating

5/5

Number of Reviews

5

Rating Summary
5
0
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5
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Red-stars EXCELLENT RATING ON
Number of Subaru WRX STI services completed
55+
services done by our mechanics
TOTAL NUMBER OF EXPERT Subaru MECHANICS
500+
experts on our platform

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