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Spark Plug

Critical For Operation

Ignition System

Ignites the air-fuel mixture in the combustion chamber.

The spark plug delivers the high-voltage spark that ignites the compressed air-fuel mixture in each cylinder. The electrode erodes over time, widening the gap and weakening the spark.

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Typical part cost
$5–$15🔒
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Typical labor cost
$60–$150🔒
🛣️
Typically lasts
30,000–100,000 mi
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Or about
3.0–5.0 years
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DIY difficulty
4/10

⚠️ Owners Often Notice

If the Spark Plug is starting to fail, these are the signs owners most commonly report before it gets worse:

Rough idle
Engine misfire
Poor fuel economy
Difficulty starting
Check engine light
Reduced acceleration

Related Services

Services commonly performed on or around this part.

Replace Spark Plug(s)

No standard interval on file

Inspect Spark Plug(s)

No standard interval on file