Mazda 3 transmission control module price snapshot
- Low
- $25
- Average
- $121
- High
- $405
Vehicle-specific price guide
How much is a used Mazda 3 transmission control module?
Asking prices from 629 salvage yards in 46 states, broken down by model year, condition grade, and fitment variant.
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 21, 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 Mazda 3 transmission control module
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 Mazda 3 transmission control module costs $25 to $405, with a median asking price of $100. Based on 3,939 priced salvage yard listings across the US, compatible across 2011–2025 (15 model years), updated Oct 21, 2026. Prices exclude shipping, core charges, and installation.
Grade A (excellent)$100
Grade B (good)$100
Grade C (fair)$80
USD
Condition comparison
Price by part grade
Grade AClean / low wear$25–$4053,071 listings
Grade BStandard used$35–$335692 listings
Grade CVisible wear$50–$10415 listings
Grade XUngraded$25–$255161 listings
| Grade | Price range | Relative range | Listings |
|---|---|---|---|
| Grade AClean / low wear | $25–$405 | 3,071 | |
| Grade BStandard used | $35–$335 | 692 | |
| Grade CVisible wear | $50–$104 | 15 | |
| Grade XUngraded | $25–$255 | 161 |
Median by grade
Grade price comparison
Grade A$100
Grade B$100
Grade C$80
Ungraded$65
Median asking price by seller-reported condition grade · $25–$405 overall range
Regional supply
Where the Mazda 3 transmission control module is listed
We found priced Mazda 3 transmission control module listings at 629 salvage yards across 46 states. California supplies the most, with 748 listings (15% of the total) from 45 yards. Location matters: yards in California ask a median $91, while Michigan yards ask $195, 114% more for the same part. Shipping usually costs less than that gap for smaller parts, so it can pay to buy out of state.
| State | Listings | Yards | Median ask |
|---|---|---|---|
| California | 748 | 45 | $91-9% |
| Florida | 634 | 44 | $99-1% |
| Texas | 477 | 40 | $99-1% |
| Illinois | 341 | 27 | $99-1% |
| Michigan | 285 | 41 | $195+95% |
| Georgia | 193 | 18 | $105+5% |
| North Carolina | 168 | 27 | $110+10% |
| Arizona | 164 | 9 | $91-9% |
States with at least 10 priced listings. % is versus the $100 national median.
Replacement cost
What is the Mazda 3 transmission control module replacement cost?
- Used part
- $100
- 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
Sources
- Labor time estimates: Part Price Guide labor database
Fitment matters
Price by trim & variant (2026)
Suspension, (air lift suspension), active damping control43 listingsInterchange 2018–2021$156$75 – $400
Memory, (seat-mirror), manual tilt and telescopic (steering column)40 listingsInterchange 2014–2020$99$25 – $346
Transfer Case, Quadra-Trac (Active on demand, opt DHB)40 listingsInterchange 2019–2020$147$70 – $305
Memory, (seat-mirror), power tilt and telescopic (steering column)38 listingsInterchange 2014–2023$51$25 – $357
Lamps, (headlamp leveling), (Bi-xenon headlamps, opt LM2), RH20 listingsInterchange 2016–2022$115$50 – $229
Lamps, (headlamp leveling), (Bi-xenon headlamps, opt LM2), LH16 listingsInterchange 2016–2020$126$32 – $235
Model-year comparison
What does a Mazda 3 transmission control module cost by year?
20261,082 listingsFits 14 years$96$25 – $400202523 listings$132$65 – $3212024100 listings$168$50 – $2402023400 listingsFits 6 years$159$30 – $3352022390 listingsFits 6 years$96$25 – $3542021264 listingsFits 6 years$96$25 – $3542020343 listingsFits 5 years$100$41 – $4052019339 listingsFits 6 years$102$25 – $3102018391 listingsFits 12 years$102$35 – $3352017328 listingsFits 12 years$99$35 – $3152016258 listingsFits 7 years$105$28 – $4052015737 listingsFits 12 years$99$25 – $282
Market analysis
How much does a used Mazda 3 transmission control module cost?
Asking prices for a used Mazda 3 transmission control module are unusually spread out: the top listing asks more than ten times what the cheapest does, so which unit you pick matters more than the median. Condition matters: grade-A units (lowest mileage, best condition) carry roughly a 25% premium over grade-C stock, with grade-A medians at $100.
Fitment variant moves the price more than most buyers expect. The most affordable variant we track, Door, door (door mounted), power folding mirrors, LH, lists at a $51 median, while Power Supply, inverter commands $176, a 245% gap inside the same part category. Confirm which variant your VIN requires before comparing quotes.
Model year matters too: 2021 units carry the lowest median at $96, while 2024 tops the table at $168. Parts from 2019–2024 are interchangeable, so if the 2021 fits your vehicle, it offers the best value across 6 compatible years.
Against comparable vehicles, the Mazda 3 sits 26% below the Mercedes S Class ($135), 7% below the Mercedes E Class ($107), and 31% below the Mercedes GLE Class ($145) for the same part. The “similar vehicles” cards below open each comparison guide.
Buying a used transmission control module: what to check
- Match exact part numbers and software flash codes: Verify hardware numbers and firmware revision suffix letters, as valve body solenoid drivers vary between sub-models.
- Inspect connector pins for fluid wicking: Check harness plug sockets for fluid intrusion, as failing transmission harness seals push ATF into the TCM pins.
- Verify donor axle ratio and tire size match: Ensure donor vehicle axle ratios and tire sizes match to prevent shifting fault codes and limp-mode triggers.
- Confirm internal circuit board casing integrity: Check plastic housings for cracked mounting ears, housing cracks, or rattling components inside the module casing.
- Perform adaptive shift learn routine after install: Clear existing TCM adaptive tables using a scan tool so the module relearns your transmission's clutch pack wear.
Keep browsing this vehicle
What other Mazda 3 parts are priced?
01wide ±202%
Tail Light
$195median
$34$821
02wide ±206%
Axle Shaft
$96median
$28$424
03wide ±179%
Side Mirror
$157median
$30$593
04wide ±225%
Wheels
$178median
$30$830
05wide ±253%
Transmission
$560median
$116$2,947
06wide ±115%
Headlight Assembly
$950median
$147$2,325
07wide ±235%
Grille
$184median
$29$895
08wide ±110%
Fender
$198median
$65$500
09wide ±207%
Engine
$1,072median
$204$4,650
10wide ±181%
Alternator
$85median
$25$332
11wide ±162%
Strut
$100median
$30$354
12wide ±254%
Starter
$71median
$25$385
Price comparisons
Compare Mazda 3 transmission control module prices
Transmission Control Modulecompare
MercedesSClassvsMazda3
Class$135
3$100
$35 diff36,151 listings
Transmission Control ModulecompareMercedesEClassvsMazda3
Class$107
3$100
$7 diff31,642 listings
Transmission Control ModulecompareMercedesGLEClassvsMazda3
Class$145
3$100
$45 diff28,661 listings
Transmission Control ModulecompareMercedesCClassvsMazda3
Class$100
3$100
$0 diff21,267 listings
Transmission Control ModulecompareToyotaCorollavsMazda3
Corolla$123
3$100
$23 diff18,457 listings
Transmission Control ModulecompareFordF250vsMazda3
F250$190
3$100
$90 diff17,898 listings
Compare fitments
What do similar vehicles charge for this part?
Acurawide ±183%
Acura ILX
$109median
$35$435
Acurawide ±218%
Acura Integra
$125median
$25$569
Acurawide ±232%
Acura MDX
$111median
$30$544
Acurawide ±203%
Acura RDX
$108median
$35$474
Acurawide ±212%
Acura TLX
$101median
$25$454
Audiwide ±253%
Audi A4
$123median
$22$644
Audiwide ±279%
Audi A6
$116median
$25$673
Audiwide ±220%
Audi Q3
$106median
$23$490
Audiwide ±260%
Audi Q5
$120median
$20$644
Audiwide ±276%
Audi Q7
$123median
$22$700
Mazdawide ±288%
Mazda CX5
$100median
$24$600
Mazdawide ±203%
Mazda Miata
$117median
$25$500
Common questions
Mazda 3 transmission control module FAQ
How much is a used transmission control module for a Mazda 3?
The median asking price is $100 across 3,939 priced listings from 629 yards. Grade-A units, the cleanest stock, have a median of $100. 2026 is the cheapest model year we track, with a median of $96.
How much does it cost to replace a Mazda 3 transmission control module?
Using a used part, a Mazda 3 transmission control module replacement typically runs $195–$400 all-in: the median used transmission control module for this model lists at $100, 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.
Which Mazda 3 model years does this price guide cover?
This guide currently has year-level pricing for 2026, 2025, 2024, 2023, 2022, 2021, 2020, 2019, 2018, 2017, 2016, 2015. Other model years contribute to the overall range where sellers listed them without a year breakdown.
Which Mazda 3 transmission control module years are interchangeable?
Salvage-yard interchange data links Mazda 3 transmission control module fitments across 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025. Searching all 15 years widens the pool of units; confirm the part number against your VIN, since trim or drivetrain can split an interchange group.