Subaru Loyale Spark Plug Replacement Costs

Estimate price near me

Service Location

Customer Ratings

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.

See availability

Customer Ratings

Spark Plug Replacement Service

How much does a Spark Plug Replacement cost?

On average, the cost for a Subaru Loyale Spark Plug Replacement is $158 with $18 for parts and $140 for labor. Prices may vary depending on your location.

Car	Service	Estimate	Shop/Dealer Price
1990 Subaru LoyaleH4-1.8L	Service typeSpark Plug Replacement	Estimate$191.24	Shop/Dealer Price$203.90 - $233.78
1992 Subaru LoyaleH4-1.8L	Service typeSpark Plug Replacement	Estimate$182.23	Shop/Dealer Price$193.12 - $221.68
1994 Subaru LoyaleH4-1.8L	Service typeSpark Plug Replacement	Estimate$182.23	Shop/Dealer Price$193.15 - $221.72
1990 Subaru LoyaleH4-1.8L Turbo	Service typeSpark Plug Replacement	Estimate$182.23	Shop/Dealer Price$193.15 - $221.72
1991 Subaru LoyaleH4-1.8L	Service typeSpark Plug Replacement	Estimate$182.23	Shop/Dealer Price$194.62 - $224.30
1993 Subaru LoyaleH4-1.8L	Service typeSpark Plug Replacement	Estimate$182.23	Shop/Dealer Price$193.29 - $221.97

Show example Subaru Loyale 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 Subaru mechanics

Real customer reviews from Subaru owners like you.

Excellent Rating

(95)

Rating Summary

92

1

0

1

1

92

1

0

1

1

SEE REVIEWS NEAR ME

Raymond

38 years of experience

613 reviews

Request Raymond

Raymond

38 years of experience

Request Raymond

by Zachary

Subaru Forester H4-2.5L - Spark Plugs - Henderson, Nevada

Great Work!

Mike

27 years of experience

265 reviews

Mike

27 years of experience

by Jon

Subaru Forester H4-2.5L - Spark Plugs - Ann Arbor, Michigan

Mike was great, and I highly would recommend him. His 25 years of experience and expertise was clear by how he patiently answered all my questions. Mike was extremely helpful and efficient!

Nicholas

22 years of experience

354 reviews

Request Nicholas

Nicholas

22 years of experience

Request Nicholas

by Farzad

Subaru Forester H4-2.5L - Spark Plugs - Denver, Colorado

Nick is great. He is patient in his explanations and quick in his work. He is very knowledgeable and diligent with his work.

Augie

32 years of experience

263 reviews

Augie

32 years of experience

by Edwin

Subaru Legacy H4-2.5L - Spark Plugs - Chatsworth, California

Augie did a great job! He replaced what I needed and also made a few recommendations. Most notable, he had no surprise fees.

Excellent Rating

(95)

Rating Summary

92

1

0

1

1

92

1

0

1

1

SEE REVIEWS NEAR ME

Recent articles & questions

How to Turn Off the Reverse Beep in a Prius

The The Toyota Prius is designed to shut off the engine when stopped as an energy-conserving measure. When the accelerator is depressed, it starts to back up, so you can go about your business on the road. When your Prius...

A Buyer's Guide to the 2012 Scion tC

In In general, Scion has been a car manufacturer that continues to climb in popularity. Perhaps no model exemplifies this more than the 2012 Scion tC. Back in 2011, Scion gave this vehicle a facelift and, by the following year,...

How to Get a North Carolina Driver's Permit

The The graduated driver’s license program in the state of North Carolina requires all new drivers under 18 years old to begin driving under supervision, in order to practice safe driving before getting their full driver’s license. In order to...

Engine shaking when idling

The light on the dashboard may be for the traction control system, which is affected by the drive by wire throttle body on your vehicle. Have a trained technician, such as those at YourMechanic, scan the vehicle for fault codes,...

Water soaked carpets leaks

Hello there. A few different items can cause a leak when it rains for the 1996 Oldsmobile Achieva. The most common are a window seal, door seal, damaged door, or sunroof seal if equipped. Any of the seals should be...

Flywheel makes squealing when clutch is not pressed

Hi Daniel. Thanks for writing in today to YourMechanic.com. Typically when you hear a whining or grinding noise while the clutch is not activated, it's caused by one of three possible sources. First, it's possible the flywheel has become unbalanced...

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 (844) 997-3624 · hi@yourmechanic.com