Subaru Impreza WRX Rough Idle

Learn if it's a simple fix or time to seek out a trusted technician.

What are common reasons my Subaru Impreza WRX has a rough idle?

While there are a variety of reasons your Subaru Impreza WRX has a rough idle, the most common 3 are a vacuum leak, an issue with the spark plugs, or a problem with the ignition coil.
of the time it's
Vacuum Leak
of the time it's
Spark Plugs
of the time it's
Ignition Coil

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See what others are asking about their Subaru Impreza WRX. Get answers from RepairPal's community of auto experts and enthusiasts.
A week ago i was going home and one of a sudden i felt like i lost power but it would still speed up. right when i go...
Subaru Impreza WRX Repairs and Prices
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Subaru Impreza WRX Rough Idle Repair Symptoms

A failing ignition coil will create misfires in the engine, and lead to hesitation, extreme power loss, engine stalling, poor fuel mileage, and illumination of the check engine ...Read More
As we discussed, spark plugs are necessary for any gasoline engine to run. When they fail, the engine is in a constant state of attempting to ignite air and fuel, but cannot. Th...Read More