In most cases, the total bill for replacing spark plugs on a 2012 Honda Accord falls around $150–$350 for the four-cylinder model and about $260–$550 for the V6 version, depending on plug type, labor rates, and whether any related components need replacement.
What affects the price
The final cost depends on several factors that influence both parts and labor charges.
- Engine configuration (four-cylinder vs. V6) and the number of plugs (4 vs. 6).
- Type of spark plugs used (copper, platinum, or iridium/tip variants).
- Labor rates at the repair shop or dealership and regional price differences.
- Whether ignition coils or coil boots must be replaced or resealed during the service.
Understanding these factors helps buyers compare quotes and set expectations for the repair bill.
Cost ranges by engine and plug type
Four-cylinder (2.4L) — 4 spark plugs
Most owners replace four plugs in this engine family. If aftermarket iridium/platinum plugs are used, expect higher parts costs but potentially longer intervals between changes; copper plugs are typically cheaper but may wear faster.
- Copper plugs: roughly $8–$24 for all four, plus labor
- Iridium/platinum plugs: roughly $40–$100 for all four, plus labor
- Labor: about 1–2 hours at typical shop rates
- Estimated total: approximately $110–$350, depending on parts and labor rates
Dealerships often charge toward the higher end of the range, while independent shops may offer savings with aftermarket plugs.
V6 (3.5L) — 6 spark plugs
The V6 option increases both the number of plugs and the time needed to access them, which can raise labor costs.
- Copper plugs: roughly $12–$36 for all six, plus labor
- Iridium/platinum plugs: roughly $60–$150 for all six, plus labor
- Labor: about 1.5–2 hours at typical shop rates
- Estimated total: approximately $200–$550, depending on parts and labor rates
As with the four-cylinder version, dealer pricing tends to be higher, and the presence of worn coils or other components can push the total further upward.
Saving tips and considerations
Several practical steps can help you manage or reduce the cost of a spark plug replacement.
- Shop around: get quotes from independent shops, chain repair centers, and Honda dealerships to compare labor rates and parts costs.
- Ask about parts: confirm whether the quote uses OEM (dealer) plugs or aftermarket equivalents, and whether new coils or boots are included or recommended.
- DIY option: if you have the tools and confidence, you may save labor by replacing plugs yourself; ensure you have the correct torque specs and gaskets if applicable.
- Bundle maintenance: sometimes dealers offer promotions or bundled maintenance packages that cover spark plug replacement at a reduced rate.
Careful shopping and understanding what’s included in the service can keep costs closer to the lower end of the range.
What you should know before the service
Spark plug replacement is a routine maintenance task that can improve performance, fuel economy, and emissions. If your Accord exhibits rough running, misfires, reduced power, or lower mpg, changing the plugs may help even if the odometer isn’t indicating a replacement schedule is due.
Summary
For a 2012 Honda Accord, expect about $150–$350 for the 4-cylinder model and roughly $260–$550 for the V6, depending on the plug type, labor rates, and whether additional components like coils are replaced. Always obtain multiple written estimates and clarify exactly what is included in the price to avoid surprises.