Spark Plugs Replacement Cost

Spark plug replacement is one of the most impactful maintenance items for engine performance — and it's usually affordable.

Spark plug replacement costs between $100 and $400 for most vehicles. Standard copper plugs cost $2 to $5 each, while iridium or platinum plugs run $8 to $20 each. Labor is where the cost varies significantly — a four-cylinder engine with easily accessible plugs might take 30 minutes, while a V6 with plugs buried under the intake manifold can take two to three hours. Some Ford trucks with two-piece plugs that tend to break during removal require special extraction procedures.

Most manufacturers recommend replacing spark plugs every 30,000 to 100,000 miles depending on the plug type. Copper plugs wear faster and need replacing sooner, while iridium plugs last much longer. Signs of worn plugs include rough idle, poor fuel economy, misfires, and sluggish acceleration. When replacing plugs, it's good practice to also inspect the ignition coils and replace any that show signs of arcing or corrosion.

Ez Mobile Mechanic replaces spark plugs at your Jacksonville location — your driveway, parking lot, or workplace. Our rate is $150 for the first hour and $100 per hour after that. We're a mobile mechanic in Jacksonville, so you skip the shop visit entirely. No tow truck, no waiting room. Call (904) 788-7272 to schedule.