How Much Does It Cost to Fix a Coil in a Car?

Expect to pay about $150–$350 to replace a single ignition coil on most cars when access is easy, or $300–$600 if it’s buried under other components. Replacing all coils can run $300–$1,200+ depending on engine cylinder count and parts quality, while a coil pack (shared unit) typically totals $150–$450. These estimates reflect typical U.S. parts-and-labor prices in 2025. Below, we explain what affects the price, what symptoms to watch for, and how to decide between DIY and a shop.

What “coil” means—and why the price varies

Modern cars use high-voltage ignition coils to fire spark plugs. Many engines use a coil-on-plug design (one coil per cylinder), some use a coil pack that serves multiple cylinders, and a few older models use a single central coil. Costs differ because part designs and how hard they are to reach can vary widely by vehicle.

Typical cost breakdown

The following list breaks down the major cost components you’re likely to encounter when fixing an ignition coil, whether you replace just one or several at a time.

Parts (per coil): $50–$150 aftermarket; $100–$300 OEM. Coil packs: $75–$300.

Labor: 0.5–1.0 hours for easy-access coils; up to 2–3 hours if intake or engine covers must be removed. Typical shop rates: $90–$140/hr at independents; $120–$180/hr at dealers (regional variation applies).

Diagnostics: $50–$150 to scan and verify a misfire/coil fault (often waived if you proceed with the repair).

Related parts: Spark plugs and coil boots, if due, add $50–$300 in parts and minimal extra labor when done together.

Taxes and shop fees: Commonly 5–12% of the invoice.

Typical totals: Per coil $150–$350 (easy) or $300–$600 (hard-to-reach); coil pack $150–$450; full set on a 4/6/8‑cyl engine $300–$1,200+ depending on quantity and access.

Taken together, parts, labor, and local shop rates determine the bottom line; engines with multiple coils or limited access climb fastest in cost.

Real-world price examples (2025)

These examples illustrate common scenarios; actual quotes vary by region and parts choice.

2018 Toyota Camry 2.5L (one coil): OEM coil $110, labor 0.6 hr ($80–$120) → $190–$260 plus tax/fees.

2012 Ford F‑150 5.0L V8 (full set, 8 coils): Aftermarket coils $60 each ($480 total), labor 1.5–2.5 hr ($150–$450) → $630–$930 plus plugs if due.

2017 BMW 3‑Series 2.0L (one coil): OEM coil $120–$180, labor ~1.0 hr ($120–$180) → $240–$360 plus tax.

2014 Chevy Traverse 3.6L (rear bank coil): Coil $80–$140, labor up to 2–3 hr ($200–$450) → $300–$590 plus tax.

2009 Honda Civic (coil pack setup varies by trim/year): Coil pack $120–$220, labor ~0.7 hr ($70–$120) → $190–$340 total.

These snapshots show how cylinder count and access drive costs; luxury-brand OEM parts also push totals higher.

Factors that move the price up or down

Several vehicle-specific and market factors influence how much you’ll pay to fix an ignition coil.

Labor rate by region: Urban/coastal labor rates are higher than rural areas.

Engine layout and access: Transverse V6 rear banks or engines requiring intake removal add time.

Coil type: Coil-on-plug (one per cylinder) vs. a shared coil pack affects part count and pricing.

Parts choice: OEM typically costs more than reputable aftermarket; some aftermarket brands offer lifetime warranties.

Replace one vs. all: Some owners replace only the failed coil; others do a full set to avoid repeated visits—higher upfront, fewer interruptions.

Warranty/recalls: Certain models have past service campaigns; checking by VIN can occasionally save you money.

Understanding these variables helps you interpret quotes and decide on parts and service strategies that fit your budget.

Symptoms of a failing ignition coil

Recognizing common signs of coil failure can help you act before collateral damage occurs.

Rough idle, stumbling, or hesitation under load.

Check Engine Light with codes: cylinder misfire (P0300–P0308) or coil circuit faults (P0350–P0358, varies by cylinder count).

Poor fuel economy and reduced power.

Raw fuel smell from exhaust or occasional backfire during severe misfires.

If you see these symptoms—especially with misfire codes—address the issue promptly to prevent more expensive repairs.

Is it safe to keep driving?

Brief trips at light load may be possible, but continued driving with a misfiring coil can overheat and damage the catalytic converter—often a $1,000–$2,500 repair on modern vehicles. If the Check Engine Light is flashing, minimize driving and schedule service immediately.

DIY vs. hiring a mechanic

DIY costs and basic steps

For many coil-on-plug engines, replacement is straightforward and can save labor costs if you’re comfortable with basic tools and safety practices.

Scan for codes to identify the suspect cylinder (e.g., P0302 for cylinder 2).

Disconnect the battery and remove engine covers as needed.

Unplug the coil connector, remove the coil hold-down bolt, and pull the coil straight up.

Inspect/replace the spark plug and coil boot if worn; apply dielectric grease to the boot.

Install the new coil, torque the bolt to the manufacturer spec (often around 7–9 N·m/62–80 in‑lb—check your service manual), reconnect the harness, and reassemble.

Clear codes and road test to confirm the fix.

DIY parts for one coil typically run $50–$150; total time is 15–60 minutes for easy-access engines. Always follow your vehicle’s service procedures and safety precautions.

When to choose a shop

Use a professional if access requires significant disassembly, you lack tools, or the misfire diagnosis is uncertain. A reputable shop can verify the root cause (coil vs. plug, injector, compression, wiring) and back the repair with a warranty.

How to save money

These practical tips can help keep the bill in check without compromising reliability.

Compare quotes from an independent shop and a dealer; ask for an itemized estimate.

Replace spark plugs and boots at the same time if they’re due—cheaper now than later.

Choose OEM-equivalent coils from reputable brands if OEM pricing is high.

Look for coupons or off-peak scheduling discounts; consider mobile mechanics for simple jobs.

Fix promptly to avoid catalytic converter damage, which can dwarf coil costs.

A little planning—especially bundling maintenance items—usually yields the best value.

Warranties and coverage

New OEM coils commonly carry 12-month/12,000-mile parts warranties (longer if installed at a dealer as part of a repair). Many aftermarket coils offer limited lifetime warranties. Ignition coils are generally not covered by the federal 8-year/80,000-mile emissions warranty, though certain states’ extended emissions programs or specific recalls/TSBs may provide coverage on some models—check your VIN with the manufacturer or a dealer.

Summary

Replacing a car’s ignition coil typically costs $150–$350 per coil when access is easy and $300–$600 when it’s not; a coil pack runs $150–$450, and replacing all coils on multi-cylinder engines can reach $300–$1,200+. Shop rates, parts choice, and engine layout drive the price. Diagnose promptly, consider plugs/boots at the same time, and compare quotes to keep costs down while protecting your catalytic converter and overall drivability.

Is it expensive to replace a coil?

If you have a faulty coil, it’s going to cost you between $200 and $300 on average to replace it, not to mention the frustration and downtime you’ll experience. Learn more about what an ignition coil is, what it does, ignition coil replacement cost, and how you can tell when it’s bad.

How to tell if a coil is bad on a car?

Symptoms of a bad ignition coil include the illuminated check engine light, rough or erratic engine idling, engine misfires, backfiring, difficulty starting the engine, reduced power and poor fuel economy, and even engine stalling. A foul smell of gas from the exhaust can also be a sign of unburned fuel due to a misfiring cylinder. These symptoms indicate the ignition system is not consistently creating the spark needed for combustion, which can lead to more severe engine damage if left unaddressed.
Here are the common symptoms of a faulty ignition coil:

Check Engine Light: The most common initial sign of an ignition coil problem is a glowing check engine light on your dashboard.
Engine Misfiring: The engine may cough, sputter, or vibrate due to a cylinder not firing correctly because the ignition coil isn’t providing enough voltage for the spark plug.
Rough Idling: The engine’s smooth rumble at idle will turn into a juddering, faltering, and noisy experience, especially when the car is stationary.
Difficulty Starting: A failing ignition coil can make it harder for the engine to start, requiring the ignition system to work overtime.
Engine Stalling: In severe cases, a misfire from a faulty ignition coil can cause the engine to stall while driving.
Reduced Power and Fuel Economy: You might notice a significant loss of power and slower acceleration because the engine isn’t combusting fuel efficiently.
Backfiring and Gas Smell: When fuel doesn’t ignite in a cylinder, it can exit the exhaust and ignite, causing loud pops (backfiring) and a strong smell of gas.

How expensive are car coils?

Over time, the coil can wear out, causing the engine to misfire. If your car is having problems starting or the engine is misfiring, it’s worth checking with a mechanic as it may require an ignition coil replacement. The average cost of replacing an ignition coil is £150, with prices ranging from £70 and £220.

Can you drive a car with a bad coil?

You should not drive a car with a bad coil for any significant distance, as it can cause serious and expensive engine damage, including catalytic converter failure, lubrication issues, and premature wear on engine components. While a car might still run, a misfiring cylinder from a bad coil wastes fuel, stresses engine parts, and can lead to a rough ride. It is best to replace the bad ignition coil as soon as possible to prevent further problems and potential hazards.

This video explains what happens if you drive with a bad ignition coil: 59sAuto Repair GuysYouTube · Jul 24, 2022
Risks of driving with a bad coil:

Engine damage: Unburned fuel can wash oil from the cylinder walls, causing wear on the cylinder, piston rings, and pistons.
Oil contamination: Excess fuel can get past the piston rings, diluting the engine oil and impairing lubrication, which can damage main and connecting rod bearings.
Catalytic converter damage: Unburned fuel entering the exhaust system can cause the catalytic converter to overheat, leading to its damage and potentially affecting oxygen sensors as well.
Crankshaft stress: The non-firing cylinder acts as a brake, placing extra stress on the crankshaft and bearings, which can lead to bearing failure.
Poor performance and safety: You may experience a rough engine, rough idling, poor fuel economy, stalling, and decreased power, which can make driving dangerous, especially in traffic or on highways.

What to do if you have a bad coil:

Drive as little as possible: Only drive when absolutely necessary and stick to local roads.
Get it diagnosed and fixed: Visit a mechanic to identify the faulty coil and have it replaced promptly to prevent further damage.
Consider the engine type: In cars with a single ignition coil, a failing coil can prevent the engine from starting, making driving impossible. In multi-coil systems, the engine may still start but will run poorly.

This video demonstrates what happens when a cylinder acts as a brake due to a bad ignition coil: 1mAuto Repair GuysYouTube · Nov 23, 2022