2018 Mazda 3 transmission control module price snapshot
- Low
- $35
- Average
- $126
- High
- $335
Year-specific price guide
Used 2018 Mazda 3 Transmission Control Module prices
Year-specific used transmission control module pricing for the 2018 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 3, 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 2018 Mazda 3 transmission control module
A used 2018 Mazda 3 transmission control module costs between $35 and $335, with a median of $102 from 320 salvage yard listings.
What the transmission control module does, common failure signs, and prices across all vehicles: used transmission control module price guide →
Also known asTCMTransmission ComputerTransmission ModuleTCU
Price summary
A used 2018 Mazda 3 transmission control module costs $35 to $335, with a median asking price of $102. Based on 320 priced salvage yard listings across the US, compatible across 2012–2023 (12 model years), updated Sep 3, 2026. Prices exclude shipping, core charges, and installation.
Grade A (excellent)$105
Grade B (good)$99
Grade C (fair)$95
USD
Condition comparison
Price by part grade
Grade AClean / low wear$35–$335260 listings
Grade BStandard used$49–$27242 listings
Grade CVisible wear$50–$1045 listings
Grade XUngraded$35–$10413 listings
| Grade | Price range | Relative range | Listings |
|---|---|---|---|
| Grade AClean / low wear | $35–$335 | 260 | |
| Grade BStandard used | $49–$272 | 42 | |
| Grade CVisible wear | $50–$104 | 5 | |
| Grade XUngraded | $35–$104 | 13 |
Median by grade
Grade price comparison
Grade A$105
Grade B$99
Grade C$95
Ungraded$50
Median asking price by seller-reported condition grade · $35–$335 overall range
Replacement cost
What is the 2018 Mazda 3 transmission control module replacement cost?
- Used part
- $102
- 2018 Mazda 3 median asking price
- Labor
- $95–$300
- 1–2 hours at $95–$150/hr
- Estimated total
- $195–$400
- median used part + labor
Labor is a typical independent-shop range for transmission control module replacement, not a quote for your vehicle; it does not include programming and adaptive relearn procedure. The part price is the live median from the salvage-yard listings on this page. Full transmission control module replacement cost breakdown
Fitment matters
Price by trim & variant
Theft-Locking, (keyless entry), (LH door), ID BHN9-67-5U041 listingsInterchange 2014–2021$99$35 – $271
Communication, (bluetooth connectivity), (center dash mounted)29 listingsInterchange 2014–2018$99$40 – $241
Multifunction, satellite radio, ID BJD6-66-DRXA thru C26 listingsInterchange 2014–2018$115$55 – $315
Theft-Locking, (keyless entry), (LH door), ID BHN9-67-5U0A13 listingsInterchange 2014–2021$95$50 – $241
Year-specific context
How does the 2018 Mazda 3 compare?
The 2018 guide is based on 391 observed listings, including 320 with posted prices. Its $102 median is 2% above the Mazda 3 guide's $100 median.
Among the 12 model years with current price data, 2018 ranks #7 from lowest to highest median.
Interchange data shows this part is also listed under model years 2012, 2013, 2014, 2015, 2016, 2017, 2019, 2020, 2021, 2022, 2023. Shopping across all 12 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 transmission control module cost in other years?
20261,082 listings$96$25 – $400202523 listings$132$65 – $3212024100 listings$168$50 – $2402023400 listingsCompatible$159$30 – $3352022390 listingsCompatible$96$25 – $3542021264 listingsCompatible$96$25 – $3542020343 listingsCompatible$100$41 – $4052019339 listingsCompatible$102$25 – $3102017328 listingsCompatible$99$35 – $3152016258 listingsCompatible$105$28 – $4052015737 listingsCompatible$99$25 – $282
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What other Mazda 3 parts are priced?
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$106median
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15
Differential
Price data updating
16wide ±64%
Door Assembly
$750median
$315$1,275
17wide ±107%
Drive Shaft
$225median
$76$559
18wide ±207%
Engine
$1,072median
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19wide ±218%
Engine Computer
$101median
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20wide ±190%
Exhaust Manifold
$325median
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21wide ±110%
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$198median
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22wide ±169%
Fog Light
$83median
$25$305
23wide ±83%
Front Seat
$143median
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24wide ±157%
Fuel Pump
$114median
$25$383
25wide ±132%
Fuel Tank
$150median
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26wide ±235%
Grille
$184median
$29$895
27wide ±115%
Headlight Assembly
$950median
$147$2,325
28
Heater Core
Price data updating
29wide ±110%
Hood
$405median
$140$1,027
30spread ±53%
Ignition Switch
$78median
$55$137
31wide ±84%
Instrument Cluster
$110median
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Intake Manifold
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$60$395
33wide ±61%
Master Cylinder
$76median
$55$147
34wide ±179%
Side Mirror
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Power Steering Pump
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Quarter Panel
$400median
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Radiator
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Rear View Mirror
$90median
$25$260
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Starter
$71median
$25$385
40wide ±138%
Steering Column
$144median
$40$437
41wide ±289%
Steering Rack
$148median
$40$895
42wide ±112%
Steering Wheel
$175median
$48$440
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Strut
$100median
$30$354
44wide ±190%
Sunroof
$216median
$61$880
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Tail Light
$195median
$34$821
46wide ±147%
Tailgate
$500median
$130$1,600
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Throttle Body
$80median
$29$292
48spread ±44%
Torque Converter
$372median
$125$450
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Transfer Case
$327median
$75$881
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Transmission
$560median
$116$2,947
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$100median
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$30$830
54wide ±116%
Window Regulator
$110median
$25$280
Common questions
2018 Mazda 3 transmission control module FAQ
How much is a used 2018 Mazda 3 transmission control module?
Based on 320 priced salvage-yard listings, a used 2018 Mazda 3 transmission control module lists between $35 and $335, with a median asking price of $102.
How much does it cost to replace a 2018 Mazda 3 transmission control module?
Using a used part, a 2018 Mazda 3 transmission control module replacement typically runs $195–$400 all-in: the median used transmission control module for this year lists at $102, and independent-shop labor for transmission control module replacement typically takes 1–2 hours at $95–$150/hr ($95–$300). The labor figure does not include programming and adaptive relearn procedure. Labor is a national part-level estimate, not a quote for your vehicle.
Will a 2018 Mazda 3 transmission control module fit another year?
Based on salvage-yard interchange data, listings for the 2018 Mazda 3 transmission control module also appear under model years 2012, 2013, 2014, 2015, 2016, 2017, 2019, 2020, 2021, 2022, 2023, 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 2018 Mazda 3 tcm?
A tcm is another name for a transmission control module. The prices on this page cover the 2018 Mazda 3 transmission control module — median $102, from 320 listings.