Spark Plug Replacement Cost in 2026

$150 – $350

Spark plug replacement costs $150 to $350 on a typical 4-cylinder and $300–$600 on a V6 or V8. Iridium plugs run $8–$20 each; the rest is 1–2.5 hours of labor — more on engines where the rear bank of plugs sits under the intake manifold.

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Spark plug replacement cost by engine

Repair type	Cost (USD)
4-cylinder (iridium plugs)	$150 – $350
V6 / V8	$300 – $600
Twin-plug / HEMI (16 plugs)	$500 – $800
Plugs + ignition coils	$400 – $900
Misfire diagnosis (scan + test)	$100 – $200

Spark Plugs replacement cost by vehicle (2026)

Vehicle	Parts	Labor	Total
BMW 3 Series	$80 – $160	$140 – $210	$220 – $370
BMW 5 Series	$80 – $160	$140 – $210	$220 – $370
BMW X3	$80 – $160	$140 – $210	$220 – $370
Chevrolet Silverado	$60 – $110	$100 – $150	$160 – $260
Chevrolet Equinox	$60 – $110	$100 – $150	$160 – $260
Chevrolet Malibu	$60 – $110	$100 – $150	$160 – $260
Ford F-150	$60 – $110	$100 – $150	$160 – $260
Ford Escape	$60 – $110	$100 – $150	$160 – $260
Ford Explorer	$60 – $110	$100 – $150	$160 – $260
Ford Mustang	$60 – $110	$100 – $150	$160 – $260
Honda Civic	$60 – $110	$100 – $150	$160 – $260
Honda Accord	$60 – $110	$100 – $150	$160 – $260
Honda CR-V	$60 – $110	$100 – $150	$160 – $260
Hyundai Elantra	$60 – $110	$100 – $150	$160 – $260
Hyundai Sonata	$60 – $110	$100 – $150	$160 – $260
Hyundai Tucson	$60 – $110	$100 – $150	$160 – $260
Jeep Wrangler	$70 – $120	$110 – $170	$180 – $290
Jeep Grand Cherokee	$70 – $120	$110 – $170	$180 – $290
Jeep Cherokee	$70 – $120	$110 – $170	$180 – $290
Mercedes-Benz C-Class	$80 – $160	$140 – $210	$220 – $370
Mercedes-Benz E-Class	$80 – $160	$140 – $210	$220 – $370
Mercedes-Benz GLC	$80 – $160	$140 – $210	$220 – $370
Nissan Altima	$60 – $120	$110 – $160	$170 – $280
Nissan Rogue	$60 – $120	$110 – $160	$170 – $280
Nissan Sentra	$60 – $120	$110 – $160	$170 – $280
Toyota Camry	$60 – $110	$100 – $150	$160 – $260
Toyota Corolla	$60 – $110	$100 – $150	$160 – $260
Toyota RAV4	$60 – $110	$100 – $150	$160 – $260
Toyota Tacoma	$60 – $110	$100 – $150	$160 – $260

What affects the price

Cylinder count — a V8 needs twice the plugs and often twice the labor of a 4-cylinder.
Plug type — copper plugs cost $3–$5 but last 30k miles; iridium/platinum cost $8–$20 and last 100k.
Access — transverse V6 rear banks and boxer engines add 1–2 hours of labor.
Ignition coils — coils often fail alongside worn plugs on high-mileage engines.
Interval — most modern cars need plugs every 60,000–100,000 miles; check the owner's manual.

Symptoms of a bad or failing spark plug

Rough, shaky idle
Engine misfires or hesitation under acceleration
Noticeably worse fuel economy
Hard starting, especially in cold weather
Check-engine light (misfire codes P0300–P0308)
Sluggish acceleration and loss of power

Frequently Asked Questions

How often should spark plugs be replaced?▾

Every 60,000–100,000 miles for iridium or platinum plugs, and about every 30,000 miles for copper. Follow the interval in your owner's manual.

What happens if I don't replace worn spark plugs?▾

Misfires send unburned fuel into the exhaust, which can destroy the catalytic converter — turning a $250 tune-up into a $1,500+ repair.

Can I replace spark plugs myself?▾

On a 4-cylinder with plugs on top, yes — under an hour with a plug socket. Rear banks on transverse V6 engines are genuinely difficult and often worth paying for.

Should I replace ignition coils at the same time?▾

Only if one has failed or the car has very high mileage. Coils last ~100,000+ miles; replacing all of them preventively adds $200–$500 for little benefit.

Related repair cost guides

All prices are estimated US national averages for 2026 (parts + labor) and are provided for informational purposes only. Actual quotes vary by vehicle, region, and shop.