2025 Mazda 3 engine computer price snapshot
- Low
- $54
- Average
- $173
- High
- $354
Year-specific price guide
Used 2025 Mazda 3 Engine Computer prices
Year-specific used engine computer pricing for the 2025 Mazda 3, built from real salvage yard and junkyard listings with condition grade and fitment detail.
SKWritten bySaurabh Kumar · Co-Founder & CTO
SK
Saurabh Kumar
Co-Founder & CTO, Part Price Guide
Built the pricing pipeline that collects and normalizes used OEM part listings from salvage yards and online marketplaces across the US.
ASReviewed byAmbika Sharma · Co-Founder & COO
Last updatedOct 22, 2026AS
Ambika Sharma
Co-Founder & COO, Part Price Guide
12 years of project management and technical operations experience. Reviews price guides for sample size, fitment accuracy, and data freshness.
Part overview
About the 2025 Mazda 3 engine computer
A used 2025 Mazda 3 engine computer costs between $54 and $354, with a median of $155 from 82 salvage yard listings.
What the engine computer does, common failure signs, and prices across all vehicles: used engine computer price guide →
Also known asECUECMPCMEngine Control ModuleEngine Control UnitPowertrain Control Module
Price summary
A used 2025 Mazda 3 engine computer costs $54 to $354, with a median asking price of $155. Based on 82 priced salvage yard listings across the US, updated Oct 22, 2026. Prices exclude shipping, core charges, and installation.
Grade A (excellent)$158
USD
Condition comparison
Price by part grade
Grade AClean / low wear$54–$35478 listings
Grade XUngraded$125–$1504 listings
| Grade | Price range | Relative range | Listings |
|---|---|---|---|
| Grade AClean / low wear | $54–$354 | 78 | |
| Grade XUngraded | $125–$150 | 4 |
Median by grade
Grade price comparison
Grade A$158
Ungraded$150
Median asking price by seller-reported condition grade · $54–$354 overall range
Replacement cost
What is the 2025 Mazda 3 engine computer replacement cost?
- Used part
- $155
- 2025 Mazda 3 median asking price
- Labor
- $95–$450
- 1–3 hours at $95–$150/hr
- Estimated total
- $250–$605
- median used part + labor
Labor is a typical independent-shop range for engine computer replacement, not a quote for your vehicle; it does not include programming and key relearn procedure. The part price is the live median from the salvage-yard listings on this page. Full engine computer replacement cost breakdown
Fitment matters
Price by trim & variant
Year-specific context
How does the 2025 Mazda 3 compare?
The 2025 guide is based on 92 observed listings, including 82 with posted prices. Its $155 median is 53% above the Mazda 3 guide's $101 median.
Among the 11 model years with current price data, 2025 ranks #8 from lowest to highest median.
Pricing is not a fitment guarantee. Match the VIN, part number, engine or drivetrain, and seller-listed variant before ordering.
Compare model years
What does a Mazda 3 engine computer cost in other years?
Keep browsing this vehicle
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Price data updating
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Common questions
2025 Mazda 3 engine computer FAQ
How much is a used 2025 Mazda 3 engine computer?
Based on 82 priced salvage-yard listings, a used 2025 Mazda 3 engine computer lists between $54 and $354, with a median asking price of $155.
How much does it cost to replace a 2025 Mazda 3 engine computer?
Using a used part, a 2025 Mazda 3 engine computer replacement typically runs $250–$605 all-in: the median used engine computer for this year lists at $155, and independent-shop labor for engine computer replacement typically takes 1–3 hours at $95–$150/hr ($95–$450). The labor figure does not include programming and key relearn procedure. Labor is a national part-level estimate, not a quote for your vehicle.
Will a 2025 Mazda 3 engine computer fit another year?
This price guide does not confirm interchangeability. Check the seller's part number, drivetrain, trim or variant, and your VIN before buying; parts from the same model can use different fitments in the same year.
How much is a 2025 Mazda 3 ecu?
A ecu is another name for a engine computer. The prices on this page cover the 2025 Mazda 3 engine computer — median $155, from 82 listings.