Subaru WRX STI Ignition Coil Replacement Costs

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Ignition Coil Replacement Service

How much does a Ignition Coil Replacement cost?

On average, the cost for a Subaru WRX STI Ignition Coil Replacement is $918 with $680 for parts and $238 for labor. Prices may vary depending on your location.

Car	Service	Estimate	Shop/Dealer Price
2014 Subaru WRX STIH4-2.5L Turbo	Service typeIgnition Coil Replacement	Estimate$1678.94	Shop/Dealer Price$2038.92 - $3105.09
2018 Subaru WRX STIH4-2.5L Turbo	Service typeIgnition Coil Replacement	Estimate$1628.68	Shop/Dealer Price$1976.93 - $3014.64
2013 Subaru WRX STIH4-2.5L Turbo	Service typeIgnition Coil Replacement	Estimate$1663.62	Shop/Dealer Price$2020.64 - $3084.59
2017 Subaru WRX STIH4-2.5L Turbo	Service typeIgnition Coil Replacement	Estimate$1628.68	Shop/Dealer Price$1976.97 - $3014.71
2016 Subaru WRX STIH4-2.5L Turbo	Service typeIgnition Coil Replacement	Estimate$1628.68	Shop/Dealer Price$1979.47 - $3019.09
2015 Subaru WRX STIH4-2.5L Turbo	Service typeIgnition Coil Replacement	Estimate$1608.84	Shop/Dealer Price$1952.41 - $2975.45

Show example Subaru WRX STI Ignition Coil Replacement prices

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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Andrew

12 years of experience

396 reviews

Andrew

12 years of experience

by Norton

Subaru WRX STI H4-2.5L Turbo - 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

Omar

13 years of experience

287 reviews

Omar

13 years of experience

by Joseph

Subaru WRX STI H4-2.5L Turbo - Clunking or knocking noise from wheels - Pompano Beach, Florida

Showed up early. Very knowledgeable. Polite. Was a pleasure to have him work for me

Ryan

23 years of experience

85 reviews

Ryan

23 years of experience

by Ovidio

Subaru WRX STI H4-2.5L Turbo - 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

19 years of experience

115 reviews

Joseph

19 years of experience

by Ron

Subaru WRX STI H4-2.5L Turbo - 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.

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