Loading

How much should it cost to replace spark plugs?

The cost to replace spark plugs can vary depending on several factors, but on average, it typically ranges from $50 to $200 for a full set of spark plug replacement. This cost covers the parts and labor required to complete the job.


Understanding Spark Plug Replacement Costs


Spark plugs are an essential component of a vehicle's ignition system, responsible for igniting the air-fuel mixture in the engine's cylinders. Over time, these plugs can wear out and need to be replaced to maintain optimal engine performance. The actual cost of replacing spark plugs can be influenced by several key factors:



  • Vehicle Make and Model: The cost of spark plugs can vary significantly based on the specific make and model of the vehicle. Luxury or high-performance vehicles may require more expensive spark plugs.

  • Number of Cylinders: The more cylinders a vehicle has, the more spark plugs will be needed, which can increase the overall replacement cost.

  • Labor Costs: The labor required to access and replace the spark plugs can also impact the total cost. Some vehicles may have more difficult-to-reach spark plug locations, requiring more time and effort from the mechanic.

  • Spark Plug Type: There are different types of spark plugs, such as standard, platinum, or iridium, with the more advanced types typically costing more.


It's important to note that the cost of spark plug replacement can also vary depending on the region, the specific repair shop, and any additional services or parts that may be required during the replacement process.


When to Replace Spark Plugs


Most manufacturers recommend replacing spark plugs every 30,000 to 100,000 miles, depending on the vehicle and the type of spark plugs used. However, it's always best to consult your owner's manual or speak with a qualified mechanic to determine the appropriate replacement interval for your specific vehicle.


Ignoring the recommended spark plug replacement interval can lead to various issues, such as decreased fuel efficiency, rough idling, misfiring, and even engine damage. Regular spark plug replacement is an essential part of maintaining the overall health and performance of your vehicle.

How long should it take a mechanic to change spark plugs?


It will take about one hour to replace your spark plugs for a four-cylinder engine. A V6 and V8 may take longer than an hour. Changing a vehicle's spark plugs is a DIY thing, but it may sometimes get complicated.



Can I drive with bad spark plugs?


Ideally, you should replace them immediately. However, you can get by for a short while, as long as they aren't misfiring. Poor spark keeps fuel from being burned inside the combustion chamber. This reduces power and fuel economy, and it makes it harder for the engine to idle.



How do you know when a spark plug needs to be replaced?


5 Signs You Need New Spark Plugs

  1. Engine Misfires. A misfiring engine is a big sign that one or more of your spark plugs are not firing properly.
  2. Poor Gas Mileage. When spark plugs are working correctly, they burn fuel efficiently in your engine.
  3. Trouble Starting.
  4. Slow Acceleration.
  5. Rough Idling.



What are signs of spark plugs going bad?


What are the signs your Spark Plugs are failing?

  • Engine has a rough idle. If your Spark Plugs are failing your engine will sound rough and jittery when running at idle.
  • Trouble starting. Car won't start and you're late for work… Flat battery?
  • Engine misfiring.
  • Engine surging.
  • High fuel consumption.
  • Lack of acceleration.



How much should a shop charge to replace spark plugs?


If it's a task you aren't comfortable doing on your own, spark plug replacement cost at a repair shop will have labor costs higher than the parts. For instance, a set of four spark plugs in a compact car will likely be around $50 to $80 to install.



Can I replace spark plugs myself?


Can I replace spark plugs myself, or should I go to a mechanic? For most DIYers, changing the spark plugs can be done at home with common tools. But for some complex modern cars, it's best to trust in the skills of a trained mechanic.



Is changing spark plugs an easy job?


Changing Spark Plugs: What You Need to Know Before You Attempt to DIY. Changing spark plugs is an easy job—provided you have the proper tools, equipment and expertise. Here's what you should know before you attempt to replace spark plugs on your own.



Why is replacing spark plugs so expensive?


The reason spark plugs have become more expensive in the past couple of decades is because precious metals that resist corrosion/deterioration are now used that help them last as long is 100000+ miles. A good example would be iridium which is far more expensive than the copper/nickel alloys used in the past.



Can you drive a car with bad spark plugs?


Ideally, you should replace them immediately. However, you can get by for a short while, as long as they aren't misfiring. Poor spark keeps fuel from being burned inside the combustion chamber. This reduces power and fuel economy, and it makes it harder for the engine to idle.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.