When should I replace my spark plugs in my Subaru Impreza?

When to Replace Spark Plugs in a Subaru Impreza
The service interval for replacing spark plugs in a Subaru Impreza is typically 60,000 miles or 60 months (5 years). This means that if your car hasn’t reached 60,000 miles, the spark plugs should generally be fine, as they don’t see significant wear if the car is not running. However, it’s important to note that the time-based service interval for spark plugs may still be relevant, especially if the car is not being driven frequently.
It’s also worth considering that even if only one spark plug has gone bad, it’s recommended to replace all of them at once. This is because if one plug has gone bad, the others aren’t far behind, and replacing all of them at once is more cost and labor efficient.
In summary, for a Subaru Impreza, it’s generally advisable to replace the spark plugs at the 60,000-mile mark or after 5 years, whichever comes first. However, if the car is not being driven frequently, it’s still important to consider the time-based service interval for the spark plugs.
If you have any further questions or need additional information, feel free to ask!

How do I know when my spark plugs need replacing?

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.

How many miles do factory spark plugs last?

100,000
How long spark plugs last varies by manufacturer and vehicle, but on many vehicles today, they should be good for 100,000 or more miles. Some vehicles, though, will have shorter intervals, particularly performance and luxury models.

How much does it cost to replace spark plugs Subaru Impreza?

Getting spark plugs replaced with new inventory can cost between $100 and $500 (including car parts and labor costs).

Why are Subaru spark plugs so expensive?

Because of the cost of iridium, the electrode is thinner, but they still deliver better power, better combustion and longer life than other plugs.

What is the life expectancy of spark plugs?

On average, the life of classic spark plugs is not more than 30,000 miles, and that of platinum and iridium is not more than 55,000 miles. The following are signs of malfunction that indicate the need to replace the spark plug: Deposits of ash or oil, soot, varnish or slag, melted or discolored electrodes.

At what mileage should you replace spark plugs?

Spark Plug Maintenance Schedule
It is typically recommended that drivers have their vehicle’s spark plugs replaced once every 30,000 miles, but there are extended range spark plugs that can last up to 100,000 miles.

What brand of spark plugs does Subaru use?

SPARK PLUG & HIGH TENSION CORD
NGK:SILFR6A. NGK:SILFR6A.

How long do Subaru spark plugs last?

Modern SUBARU BOXER® engines require improved spark plugs made with material like platinum. This means you’ll only have to worry about changing them every 60,000 miles or so.

Can spark plugs last 5 years?

For most drivers, that will mean that you’re due for spark plug service once every 2-3 years!

How long do spark plugs last Subaru Impreza?

How Often Should You Have the Spark Plugs in Your Subaru Changed? Modern SUBARU BOXER® engines require improved spark plugs made with material like platinum. This means you’ll only have to worry about changing them every 60,000 miles or so.