How Much Does Spark Plug Replacement Cost in Illinois?
Illinois pricing is near the national average. Updated for 2026.
Spark Plug Replacement Pricing in Illinois
In Illinois, the average cost for spark plug replacement is $210 for all plugs, which is 5% higher than the national average of $200. Most Illinois residents pay between $63 and $473.
Illinois has costs that track closely with the national average, though prices can still vary between urban and rural areas within the state.
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.
Illinois vs National Average
What Affects Spark Plug Replacement Cost in Illinois?
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
📐 Spark Plug Replacement in Illinois Cost Calculator
Get a personalized estimate based on your project details
Get a Free Estimate
Compare costs and connect with providers in your area.
Top-Rated Spark Plug Replacement Pros in Illinois
5 providersAll-Star Auto Repair
✅ VERIFIEDAll-Star Car Care
✅ VERIFIEDComplete Auto Service
Are You a Spark Plug Replacement Professional?
Get listed on CostWhale and reach thousands of customers searching for spark plug replacement in Illinois.
💡 Tips to Save on Spark Plug Replacement in Illinois
- 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 Illinois Cost Trends (2020–2024)
Prices have increased +18.0% over the last 5 years
| Year | National Avg | YoY Change |
|---|---|---|
| 2020 | $178 | — |
| 2021 | $185 | +3.9% |
| 2022 | $197 | +6.5% |
| 2023 | $203 | +3.0% |
| 2024 | $210 | +3.4% |
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 Illinois
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 Illinois
🔍 Get Auto Repair Estimates
Compare prices from trusted mechanics near you. See fair price ranges before you go.
* CostWhale may earn a commission. This doesn't affect our pricing data or recommendations.
💰 Get Weekly Cost-Saving Tips
Join 10,000+ smart homeowners. Unsubscribe anytime.