2017 Mazda 3 engine computer price snapshot
- Low
- $25
- Average
- $128
- High
- $460
Year-specific price guide
Used 2017 Mazda 3 Engine Computer prices
Year-specific used engine computer pricing for the 2017 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 updatedSep 23, 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 2017 Mazda 3 engine computer
A used 2017 Mazda 3 engine computer costs between $25 and $460, with a median of $101 from 502 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 2017 Mazda 3 engine computer costs $25 to $460, with a median asking price of $101. Based on 502 priced salvage yard listings across the US, compatible across 2014–2018 (5 model years), updated Sep 23, 2026. Prices exclude shipping, core charges, and installation.
Grade A (excellent)$104
Grade B (good)$100
Grade C (fair)$100
USD
Condition comparison
Price by part grade
Grade AClean / low wear$25–$310393 listings
Grade BStandard used$30–$46062 listings
Grade CVisible wear$99–$1255 listings
Grade XUngraded$42–$20842 listings
| Grade | Price range | Relative range | Listings |
|---|---|---|---|
| Grade AClean / low wear | $25–$310 | 393 | |
| Grade BStandard used | $30–$460 | 62 | |
| Grade CVisible wear | $99–$125 | 5 | |
| Grade XUngraded | $42–$208 | 42 |
Median by grade
Grade price comparison
Grade A$104
Grade B$100
Grade C$100
Ungraded$75
Median asking price by seller-reported condition grade · $25–$460 overall range
Replacement cost
What is the 2017 Mazda 3 engine computer replacement cost?
- Used part
- $101
- 2017 Mazda 3 median asking price
- Labor
- $95–$450
- 1–3 hours at $95–$150/hr
- Estimated total
- $195–$550
- 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 2017 Mazda 3 compare?
The 2017 guide is based on 638 observed listings, including 502 with posted prices. Its $101 median is 0% above the Mazda 3 guide's $101 median.
Among the 11 model years with current price data, 2017 ranks #5 from lowest to highest median.
Interchange data shows this part is also listed under model years 2014, 2015, 2016, 2018. Shopping across all 5 compatible years may surface better prices or condition grades.
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?
202592 listings$155$54 – $3542024100 listings$202$50 – $2962023145 listings$100$25 – $3312022150 listings$169$42 – $2552021145 listings$96$25 – $331202060 listings$170$49 – $255201949 listings$107$25 – $3312018568 listingsCompatible$86$25 – $465201650 listingsCompatible$150$80 – $4652015317 listingsCompatible$99$30 – $395
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Common questions
2017 Mazda 3 engine computer FAQ
How much is a used 2017 Mazda 3 engine computer?
Based on 502 priced salvage-yard listings, a used 2017 Mazda 3 engine computer lists between $25 and $460, with a median asking price of $101.
How much does it cost to replace a 2017 Mazda 3 engine computer?
Using a used part, a 2017 Mazda 3 engine computer replacement typically runs $195–$550 all-in: the median used engine computer for this year lists at $101, 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 2017 Mazda 3 engine computer fit another year?
Based on salvage-yard interchange data, listings for the 2017 Mazda 3 engine computer also appear under model years 2014, 2015, 2016, 2018, suggesting these years share compatible fitments. Always verify the exact part number, drivetrain, trim, and your VIN before buying — interchange compatibility can vary by variant.
How much is a 2017 Mazda 3 ecu?
A ecu is another name for a engine computer. The prices on this page cover the 2017 Mazda 3 engine computer — median $101, from 502 listings.