The cost of a single spark plug typically ranges from $5 to $25, but the final price depends heavily on the plug type and your vehicle. For a full set installed by a professional, expect to pay between $100 and $300. The largest factor isn't the part cost, but the labor required to access the plugs, which can vary dramatically by engine design.
Spark plugs are not one-size-fits-all. The main types are:
- Copper Core: The most basic and affordable ($5-$10 each), but they have a shorter lifespan (around 30,000 miles). They are often specified for older models.
- Iridium or Platinum: These are the standard for most modern cars. They are more expensive ($15-$25 each) but offer superior performance, better fuel efficiency, and a much longer service life (up to 100,000 miles). The fine electrode tip provides a more consistent spark.
The total job cost is heavily influenced by your car's engine. A standard 4-cylinder engine with easily accessible plugs will have much lower labor charges than a V8 or a transverse V6 where the rear bank of plugs is buried behind other components, requiring significant disassembly.
You can save money by buying the plugs yourself from an auto parts store or online retailer and doing the job if you're comfortable with basic mechanic work. However, for complex engines, professional installation is often worth the cost to avoid potential issues.
| Vehicle Type (Example) | Spark Plug Type (Typical) | Estimated Cost per Plug (Part Only) | Estimated Total Cost (Parts & Labor) |
|---|
| Honda Civic (4-cylinder) | Iridium | $12 - $18 | $120 - $180 |
| Ford F-150 (V8) | Platinum | $8 - $15 | $150 - $250 |
| BMW 3-Series (Inline-6) | Iridium | $18 - $25 | $250 - $350 |
| Toyota Camry (4-cylinder) | Iridium | $10 - $16 | $130 - $200 |
| Chevrolet Suburban (V8) | Platinum | $9 - $16 | $160 - $280 |
