How Much Does Engine Tune-Up Cost in Missouri?
Missouri pricing is below the national average. Updated for 2026.
Engine Tune-Up Pricing in Missouri
In Missouri, the average cost for engine tune-up is $174 per service, which is 13% lower than the national average of $200. Most Missouri residents pay between $44 and $348.
Missouri benefits from a lower cost of living than many states, resulting in more affordable pricing for engine tune-up. This makes it one of the more budget-friendly states for this service.
An engine tune-up replaces wear items that affect engine performance — spark plugs, air filter, fuel filter, PCV valve, and sometimes ignition wires. Modern tune-ups are simpler than they once were since most cars no longer need points, caps, or carburetor adjustments.
Missouri vs National Average
What Affects Engine Tune-Up Cost in Missouri?
Cylinders
4-cylinder: $50-$150. 6-cylinder: $100-$250. 8-cylinder: $150-$400
Spark Plug Type
Copper: $2-$5/plug (replace every 30K miles). Platinum: $6-$12/plug (60K). Iridium: $8-$20/plug (100K)
Shop Type
Independent mechanic: $50-$200. Chain shop (Midas, Firestone): $100-$300. Dealership: $150-$400
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Top-Rated Engine Tune-Up 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 Engine Tune-Up in Missouri
- 1.Spark plugs and air filter replacement are easy DIY jobs on most cars (30-60 minutes, $30-$80 in parts)
- 2.Iridium/platinum plugs cost more ($8-$20 each vs $2-$5) but last 60,000-100,000 miles
- 3.Independent shops charge 30-50% less than dealerships for the same service
- 4.Combine with other maintenance (oil change, tire rotation) to save on labor/shop fees
📈 Engine Tune-Up 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 Engine Tune-Up in Missouri
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Frequently Asked Questions
How often does a car need a tune-up?
Modern cars with electronic ignition need spark plug replacement every 60,000-100,000 miles. Air filters every 15,000-30,000 miles. There's no longer a traditional 'tune-up' interval — follow your owner's manual maintenance schedule.
What are signs my car needs a tune-up?
Rough idle, reduced fuel economy, difficulty starting, engine misfires, check engine light, sluggish acceleration, and stalling. These symptoms can also indicate other issues, so diagnosis is important before assuming a tune-up is the fix.
Engine Tune-Up Cost in Other States
Related Cost Guides for Missouri
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