For a 2011 Hyundai Sonata, it's generally recommended to change the spark plugs every 60,000 to 100,000 miles, depending on the type of spark plugs used. If your Sonata has platinum or iridium plugs, they may last closer to the 100,000-mile mark. Regular inspection is also advised, as driving conditions and engine performance can affect their lifespan. Always refer to your owner’s manual for specific recommendations.
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when do you change spark plugs
Standard spark plugs, 50000 miles. Platinum tip spark plugs, 100000 miles.
If you have platinum spark plugs, 100K. If you have standard plugs, 50K.
Generally I change platinum plugs at 100K and regular plugs at 50K.
air filter every 20,000 miles, i change spark plugs once a year
Change the plugs at 100,000 miles or earlier if the engine is not performing as it should.
The manufacturer recommends that the spark plugs are changed every 30,000 miles. Many individuals have experienced a much longer life for the spark plugs.
platinum plugs 75,000 miles. resistor plugs 30,000.