How much should I pay to get spark plugs changed?
For most drivers, a spark plug change is a routine maintenance item that won’t break the bank. In general, aim for a total bill between about $100 and $300, depending on your vehicle, the type of plugs used, and local labor rates.
What drives the cost
The price breaks down into two main components: parts and labor. In addition, the type of plug and engine configuration influence the final number. Here’s how it typically shakes out.
- Parts cost by plug type: copper plugs are usually about $2–$8 per plug; platinum plugs run about $4–$15 each; iridium plugs typically $8–$25 each. Most engines use 4 plugs; for 6 or 8 cylinders, multiply accordingly.
- Labor cost: shop hourly rates commonly range from $75–$150. Replacement typically takes 0.5–2 hours depending on engine layout, with four-cylinder engines generally at the lower end and harder-to-reach engines at the higher end.
- Additional items and services: if you need ignition wires or coil packs replaced, gapping the plugs, applying anti-seize or dielectric grease, or running a quick diagnostic for misfires, these can add to the bill. Some shops include these in a flat rate, others itemize them separately.
In short, most owners pay within the ranges above depending on the factors described. To get a precise figure, ask for a written quote that includes parts and labor.
Typical price ranges by engine configuration
To give you a sense of what you might pay for common configurations, here are approximate ranges by engine size and plug type.
- 4-cylinder engines with conventional copper plugs: roughly $100–$180 total
- 4-cylinder engines with platinum or iridium plugs: roughly $150–$230 total
- V6 or V8 engines requiring 6–8 plugs: roughly $180–$320 total
- Premium or specialty plugs in hard-to-access engines (or high labor rates): roughly $250–$500+
Prices vary by region, shop, and whether additional components (like wires, coils, or gaskets) are replaced at the same time. Always request a written quote that itemizes parts and labor, and ask whether the price includes waste disposal and any shop fees.
Summary
For most cars in 2025, a spark plug replacement will cost about $100–$300, with lower end on four-cylinder, copper-plug setups and higher end for engines with more cylinders, premium plugs, or challenging access. Get a written quote that separates parts and labor, and consider whether you need any related parts replaced at the same time to avoid future labor charges.
