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Toyota Yaris Rough Idle

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

What are common reasons my Toyota Yaris has a rough idle?

While there are a variety of reasons your Toyota Yaris 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.
34%
of the time it's
Vacuum Leak
21%
of the time it's
Spark Plugs
15%
of the time it's
Ignition Coil

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Related Toyota Yaris Questions

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2009 yaris . car idles rough and has strong gas smell. been to dealership twice and has not found a problem with it...
Toyota Yaris Repairs and Prices
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Toyota Yaris 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