How much does it cost to replace spark plugs on a Subaru Legacy?
The cost to replace spark plugs on a Subaru Legacy can range from $150 to $300, depending on various factors. This article will provide a detailed breakdown of the typical costs associated with this common maintenance task.
Spark Plug Replacement Cost Factors
The exact cost to replace spark plugs on a Subaru Legacy can vary based on the following factors:
- Number of spark plugs: The Subaru Legacy typically has 4 or 6 spark plugs, depending on the engine configuration. More plugs mean a higher overall cost.
- Labor costs: The labor involved in accessing and replacing the spark plugs can add $50 to $150 to the total cost, depending on the mechanic's hourly rate and the difficulty of the job.
- Spark plug type: Subaru Legacy models may use standard copper spark plugs or more advanced iridium or platinum spark plugs, which are more expensive.
- Location of spark plugs: Some Subaru Legacy models have spark plugs that are more difficult to access, requiring additional labor time and cost.
Based on these factors, the typical cost range for replacing spark plugs on a Subaru Legacy is $150 to $300.
DIY Spark Plug Replacement
For those mechanically inclined, it is possible to replace the spark plugs on a Subaru Legacy as a do-it-yourself (DIY) project. This can significantly reduce the overall cost, as you would only need to purchase the spark plugs themselves, which typically range from $10 to $20 per plug. However, the labor involved can be time-consuming and requires some mechanical expertise, so it's important to carefully consider your skill level before attempting a DIY spark plug replacement.
When to Replace Spark Plugs
Subaru recommends replacing the spark plugs on a Legacy every 60,000 to 100,000 miles, depending on the specific model and driving conditions. Signs that spark plugs may need replacement include:
- Decreased fuel efficiency
- Rough idling or engine misfiring
- Difficulty starting the engine
- Increased emissions or exhaust smoke
If you notice any of these issues with your Subaru Legacy, it's a good idea to have the spark plugs inspected and replaced as needed to maintain optimal engine performance and fuel efficiency.
Why is replacing spark plugs so expensive?
The intake manifold will need to be removed to reach the plugs on the back bank. All that extra disassembly adds to the labor time. Other layouts like flat engines (sometimes called “boxer”), commonly seen on Subaru's and Porsches, require more time to change the spark plugs.
Can I drive my car with bad spark plugs?
Yes, driving with a dead spark plug is not advisable. A dead or faulty spark plug can lead to several issues, including: Engine Misfire: A dead spark plug can cause the engine to misfire, leading to rough idling and poor acceleration.
Can you jump start a car with bad spark plugs?
It is possible to jump-start your car as a temporary solution, but you'll have to change it sooner or later. A faulty ignition coil and bad spark plugs have to be also replaced. You'll need a multimeter to make sure that your ignition coil is no longer able to perform its functions properly.
What are the signs of a bad spark plug?
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 often should spark plugs be changed in a Subaru?
every 60,000 miles
To extend the life of your Subaru spark plugs and ensure your engine runs smoothly, regular maintenance is key. This includes following Subaru's recommended service intervals—typically every 60,000 miles for standard replacements. However, this can vary based on your driving habits and the specific Subaru model.
How much should I pay to get spark plugs changed?
For instance, a set of four spark plugs in a compact car will likely be around $50 to $80 to install. Some vehicles need an intake plenum or other parts removed to access the spark plugs, and the price goes up commensurately.
How to tell if spark plugs need changing?
Here are seven signs that are telling you that you need spark plug replacement on your vehicle.
- Your Vehicle is Difficult to Start.
- Your Engine is Misfiring.
- You Have Poor Fuel Economy.
- Your Engine Idles Rough.
- Your Car Doesn't Accelerate Easily.
- Your Engine is Loud.
- Your “Check Engine” Light Comes On.
How do I know if my Subaru spark plugs are bad?
One of the first signs of spark plug wear is trouble starting your Subaru. If the engine cranks longer than usual before starting or if you experience intermittent starting issues, it's time to inspect your spark plugs.
Is it easy to replace Subaru spark plugs?
Replacing spark plugs is something you can do at home within an hour as long as you have the following tools: Appropriately sized spark plug socket. 8-10mm sockets. Ratchet and extensions.
What symptoms may indicate my vehicle's spark plugs need replacing?
Signs of Bad Spark Plugs
- Your check engine light comes on. Worn/failed spark plugs, coil packs, or spark plug wires can trigger your check engine light to come on.
- Engine misfires.
- Your car has trouble starting.
- Bad gas mileage.
- The engine idles roughly (and you can hear it!)
- Your car won't accelerate quickly.
