How Much Does Spark Plug Replacement Cost in Missouri?
Missouri pricing is below the national average. Updated for 2026.
Spark Plug Replacement Pricing in Missouri
In Missouri, the average cost for spark plug replacement is $174 for all plugs, which is 13% lower than the national average of $200. Most Missouri residents pay between $52 and $392.
Missouri benefits from a lower cost of living than many states, resulting in more affordable pricing for spark plug replacement. This makes it one of the more budget-friendly states for this service.
Spark plugs ignite the air-fuel mixture in your engine. Worn plugs cause misfires, rough idle, poor fuel economy, and hard starting. Most vehicles have 4-8 spark plugs depending on engine size.
Missouri vs National Average
What Affects Spark Plug Replacement Cost in Missouri?
Engine
4-cylinder: $60-$200. V6: $150-$300. V8: $200-$450
Plug type
Copper: $2-$5 each. Platinum: $5-$15 each. Iridium: $8-$20 each. Double platinum: $10-$25 each
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Top-Rated Spark Plug Replacement Pros in Missouri
5 providersChampion Auto Center
🏆 SPONSOREDProudly serving MO since 2017. Licensed, insured, and committed to excellence.
Interstate Motor Works
⭐ PREMIUMProudly serving MO since 2011. Licensed, insured, and committed to excellence.
Interstate Motor Works
⭐ PREMIUMProudly serving MO since 2011. Licensed, insured, and committed to excellence.
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💡 Tips to Save on Spark Plug Replacement in Missouri
- 1.DIY is straightforward on most 4-cylinder engines with basic tools
- 2.Iridium or platinum plugs cost more but last 60,000-100,000 miles
- 3.Don't pay for premium plugs if your car only needs copper
- 4.Bundle with other ignition maintenance (wires, coils) for labor savings
📈 Spark Plug Replacement in Missouri Cost Trends (2020–2024)
Prices have increased +17.6% over the last 5 years
| Year | National Avg | YoY Change |
|---|---|---|
| 2020 | $148 | — |
| 2021 | $154 | +4.1% |
| 2022 | $164 | +6.5% |
| 2023 | $169 | +3.0% |
| 2024 | $174 | +3.0% |
Based on national averages adjusted for annual inflation. Actual costs vary by location and project scope.
💬 What Did You Pay?
Real costs reported by homeowners for Spark Plug Replacement in Missouri
Recent Reports
Frequently Asked Questions
How often should spark plugs be replaced?
Copper plugs every 20,000-30,000 miles. Platinum or iridium plugs every 60,000-100,000 miles. Check your owner's manual for your car's specific interval.
Spark Plug Replacement Cost in Other States
Related Cost Guides for Missouri
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