Engine · important priority
Spark Plug Replacement Cost & Pricing
Replace worn or fouled spark plugs to restore engine performance and fuel efficiency.
Typical Spark Plug Replacement cost
$40–$200, with an average estimate of $95 before vehicle-specific adjustments.
What to expect
Difficulty: easy. Typical labor time: 1–3 hours.
Mechanic's tip
Symptoms of bad spark plugs include rough idling, poor acceleration, and lower fuel economy. Iridium or platinum plugs cost more but last 60,000–100,000 miles versus 30,000 for copper.