How Long Do Ignition Coils Last? Do you want to really know how long your coil lasts? Knowing how to long your coil pack lasts can help you in avoiding a lot of situations. For instance, your coil goes bad and you are in the middle of an emergency and you do not have any backup that cannot be a good experience.

How Long Do Ignition Coils Last?

Usually, your coil can last for the lifetime of the car, but that’s rare. You can replace the ignition coil every three to five years. However, you can also request replacement before those years, that is if the coil is bad earlier. Some ignition coils can last more than five years.

Check Out: What is a Cam Phaser? – How to Replace your Cam Phaser

How Long Do Ignition Coils Last? – Ignition Coils

Ignition coils send high-voltage electricity to the spark plugs, which is necessary to start the engine. most cars made in the past three decades have one ignition coil, or coil pack, per cylinder. A failing coil can result in a number of problems, such as a stalled vehicle, rough idling, or vehicle failure just to name a few. The main reason for an ignition coil is to convert the low current from a car battery into enough power to ignite the fuel and start the engine.

An ignition coil is an induction coil in an automobile’s ignition system that transforms the battery’s voltage to the thousands of volts needed to create an electric spark in the spark plugs to ignite the fuel.

When Should I Replace a Faulty Ignition Coil?

As soon as possible. This type of failure will most likely leave you stranded on this side of the road. Even if the car still runs, misfiring may damage other parts of the engine. what you should do is find a reputable mechanic and set an appointment as soon as possible.

Most coil replacements can be done the same day, but sometimes do vary between makes and models. Some carmakers recommend replacing the ignition coils at scheduled intervals; this schedule should be followed to reduce the likelihood of failure.

What are the Symptoms of a Faulty Engine Coil?

A failing engine can result in some symptoms but in this guide below we will be letting you know the symptoms;

  • Check Engine Light On: the check engine light will come on if your vehicle misfires or is hard to start. This problem is often caused by a malfunctioning ignition coil.
  • Poor Fuel Economy: if you notice that your car is getting less mileage from a full tank than normal, this could mean that you have a bad ignition coil. This takes place because, when your, spark plugs aren’t getting a certain power, the system will try to compensate by taking more fuel.
  • Hard Starts And Stalling: the ignition needs to spark at just the right time for the engine to start and a vehicle to run. If an ignition coil is malfunctioning and not delivering the required voltage to the spark plugs, you will find it hard to start the engine.
  • Misfiring Engine: A malfunctioning ignition coil will cause your vehicle to misfire when you accelerate. In some other cases, a misfire could cause your vehicle to shut down while you are driving.

If the coil is failing, you may hear arcing from under the hood, which sounds like a rubber band snapping. The ignition coil may look burned or white where the terminal connects to the insulated wire.

What Does a Bad Coil Pack Look Like?

In general, a bad coil pack looks like any other working coil pack any other working coil packs. It’s hard to tell if a coil pack is bad only by looking at it. However, sometimes you may notice a sign of cracks, melting, or burns that indicate a bad coil pack.

How Much is an Ignition Coil?

Do you feel like you are always repairing your car? These can definitely add up quickly. You can save costs by replacing the ignition coil on your own. It is pretty simple and easy to do by yourself. If you are not comfortable doing it on your own then you can take the car to the mechanic.

They will be able to fix it, it will just cost you a little bit more because you have to pay the labour cost.

Factors Influencing Ignition Coil Lifespan

The longevity of ignition coils is influenced by various factors. Here’s an in-depth look at the key determinants:

1. Material Quality

  • Explore how the quality of materials used in manufacturing ignition coils affects their durability.
  • Discuss the significance of choosing high-quality aftermarket coils for replacement.

2. Driving Conditions

  • Examine how driving conditions, such as frequent stop-and-go traffic or extreme temperatures, impact ignition coil lifespan.
  • Provide tips for drivers in challenging environments to mitigate potential issues.

3. Engine Misfires

  • Delve into the connection between engine misfires and ignition coil lifespan.
  • Explain how addressing misfires promptly can contribute to prolonged coil life.

4. Regular Maintenance Practices

  • Discuss the role of routine vehicle maintenance in ensuring the health of ignition coils.
  • Provide a checklist for maintenance practices that indirectly influence ignition coil longevity.

Signs of a Failing Ignition Coil

Recognizing the symptoms of a failing ignition coil is crucial for timely intervention. Here’s a detailed overview:

1. Misfiring Engine

  • Explain how engine misfires are a common indicator of ignition coil issues.
  • Provide insights into the diagnostic process for identifying which coil is failing.

2. Decreased Fuel Efficiency

  • Explore the relationship between failing ignition coils and decreased fuel efficiency.
  • Discuss the impact of inefficient combustion on overall engine performance.

3. Check Engine Light

  • Explain why an illuminated check engine light may signal ignition coil problems.
  • Offer advice on interpreting diagnostic trouble codes related to ignition coils.

4. Stalling or Rough Idling

  • Discuss how stalling or rough idling can be attributed to failing ignition coils.
  • Provide troubleshooting tips for drivers experiencing these issues.

Extending Ignition Coil Lifespan: Maintenance Tips

To maximize the lifespan of ignition coils, drivers can adopt proactive maintenance practices. Here’s a comprehensive guide:

1. Regular Inspection

  • Advocate for periodic visual inspections of ignition coils.
  • Provide a step-by-step guide for drivers to visually assess the condition of their coils.

2. Timely Replacement of Spark Plugs

  • Explain the interconnectedness of spark plugs and ignition coils.
  • Provide a recommended timeline for spark plug replacement to prevent coil strain.

3. Quality Ignition Coil Replacement

  • Discuss the importance of choosing high-quality replacement coils.
  • Offer guidance on selecting compatible coils for specific vehicle models.

4. Proper Engine Warm-Up

  • Explore how allowing the engine to warm up properly can positively impact the ignition coil lifespan.
  • Provide recommendations on warm-up practices, especially in colder climates.

5. Addressing Engine Issues Promptly

  • Emphasize the importance of prompt attention to engine issues.
  • Provide guidance on seeking professional help for comprehensive diagnostics.


In conclusion, the lifespan of ignition coils varies based on several factors, including material quality, driving conditions, and maintenance practices. Recognizing the signs of a failing ignition coil and adopting proactive maintenance measures can significantly extend their longevity. As a vehicle owner, staying informed about the health of your ignition system ensures optimal engine performance and reliability.

Remember, when it comes to ignition coils, a proactive approach to maintenance goes a long way in preventing potential issues and ensuring a smooth driving experience.


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