2018 Mazda 3 alternator price snapshot
- Low
- $30
- Average
- $92
- High
- $315
Year-specific price guide
Used 2018 Mazda 3 Alternator prices
Year-specific used alternator 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 updatedAug 13, 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 alternator
A used 2018 Mazda 3 alternator costs between $30 and $315, with a median of $76 from 112 salvage yard listings.
What the alternator does, common failure signs, and prices across all vehicles: used alternator price guide →
Price summary
A used 2018 Mazda 3 alternator costs $30 to $315, with a median asking price of $76. Based on 112 priced salvage yard listings across the US, compatible across 2014–2025 (12 model years), updated Aug 13, 2026. Prices exclude shipping, core charges, and installation.
Grade A (excellent)$81
Grade B (good)$75
Grade C (fair)$65
USD
Condition comparison
Price by part grade
Grade AClean / low wear$30–$31582 listings
Grade BStandard used$30–$869 listings
Grade CVisible wear$41–$652 listings
Grade XUngraded$30–$12519 listings
| Grade | Price range | Relative range | Listings |
|---|---|---|---|
| Grade AClean / low wear | $30–$315 | 82 | |
| Grade BStandard used | $30–$86 | 9 | |
| Grade CVisible wear | $41–$65 | 2 | |
| Grade XUngraded | $30–$125 | 19 |
Median by grade
Grade price comparison
Grade A$81
Grade B$75
Grade C$65
Ungraded$75
Median asking price by seller-reported condition grade · $30–$315 overall range
Replacement cost
What is the 2018 Mazda 3 alternator replacement cost?
- Used part
- $76
- 2018 Mazda 3 median asking price
- Labor
- $95–$375
- 1–2.5 hours at $95–$150/hr
- Estimated total
- $170–$450
- median used part + labor
Labor is a typical independent-shop range for alternator replacement, not a quote for your vehicle. The part price is the live median from the salvage-yard listings on this page. Full alternator replacement cost breakdown
Fitment matters
Price by trim & variant
Year-specific context
How does the 2018 Mazda 3 compare?
The 2018 guide is based on 142 observed listings, including 112 with posted prices. Its $76 median is 11% below the Mazda 3 guide's $85 median.
Among the 10 model years with current price data, 2018 ranks #5 from lowest to highest median.
Interchange data shows this part is also listed under model years 2014, 2015, 2016, 2017, 2019, 2020, 2021, 2022, 2023, 2024, 2025. 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 alternator cost in other years?
202486 listingsCompatible$125$64 – $325202393 listingsCompatible$96$50 – $3162022146 listingsCompatible$95$50 – $3162021100 listingsCompatible$124$41 – $2902020200 listingsCompatible$90$50 – $3302019176 listingsCompatible$75$25 – $3322017100 listingsCompatible$65$35 – $249201699 listingsCompatible$65$32 – $249201599 listingsCompatible$65$32 – $249
Keep browsing this vehicle
What other Mazda 3 parts are priced?
01wide ±106%
AC Compressor
$162median
$42$387
02wide ±158%
ABS Module
$138median
$34$470
03wide ±199%
Air Bag
$151median
$35$637
04wide ±206%
Axle Shaft
$96median
$28$424
05wide ±201%
Blower Motor
$76median
$25$331
06wide ±277%
Brake Caliper
$75median
$14$429
07wide ±97%
Rear Bumper Assembly
$455median
$115$1,001
08wide ±128%
Front Bumper
$259median
$60$724
09wide ±100%
Rear Bumper
$250median
$70$570
10wide ±284%
Car Radio
$112median
$25$662
11wide ±154%
Center Console
$106median
$40$366
12wide ±215%
AC Condenser
$143median
$45$660
13wide ±155%
Control Arm
$100median
$34$343
14
Differential
Price data updating
15wide ±64%
Door Assembly
$750median
$315$1,275
16wide ±107%
Drive Shaft
$225median
$76$559
17wide ±207%
Engine
$1,072median
$204$4,650
18wide ±218%
Engine Computer
$101median
$25$465
19wide ±190%
Exhaust Manifold
$325median
$65$1,300
20wide ±110%
Fender
$198median
$65$500
21wide ±169%
Fog Light
$83median
$25$305
22wide ±83%
Front Seat
$143median
$71$307
23wide ±157%
Fuel Pump
$114median
$25$383
24wide ±132%
Fuel Tank
$150median
$50$447
25wide ±235%
Grille
$184median
$29$895
26wide ±115%
Headlight Assembly
$950median
$147$2,325
27
Heater Core
Price data updating
28wide ±110%
Hood
$405median
$140$1,027
29spread ±53%
Ignition Switch
$78median
$55$137
30wide ±84%
Instrument Cluster
$110median
$65$250
31wide ±98%
Intake Manifold
$171median
$60$395
32wide ±61%
Master Cylinder
$76median
$55$147
33wide ±179%
Side Mirror
$157median
$30$593
34wide ±167%
Power Steering Pump
$124median
$30$445
35wide ±78%
Quarter Panel
$400median
$225$850
36wide ±210%
Radiator
$167median
$50$750
37wide ±131%
Rear View Mirror
$90median
$25$260
38wide ±254%
Starter
$71median
$25$385
39wide ±138%
Steering Column
$144median
$40$437
40wide ±289%
Steering Rack
$148median
$40$895
41wide ±112%
Steering Wheel
$175median
$48$440
42wide ±162%
Strut
$100median
$30$354
43wide ±190%
Sunroof
$216median
$61$880
44wide ±202%
Tail Light
$195median
$34$821
45wide ±147%
Tailgate
$500median
$130$1,600
46wide ±164%
Throttle Body
$80median
$29$292
47spread ±44%
Torque Converter
$372median
$125$450
48wide ±123%
Transfer Case
$327median
$75$881
49wide ±253%
Transmission
$560median
$116$2,947
50wide ±190%
Transmission Control Module
$100median
$25$405
51wide ±72%
Turbocharger
$393median
$200$766
52wide ±132%
Water Pump
$100median
$25$289
53wide ±225%
Wheels
$178median
$30$830
54wide ±116%
Window Regulator
$110median
$25$280
Common questions
2018 Mazda 3 alternator FAQ
How much is a used 2018 Mazda 3 alternator?
Based on 112 priced salvage-yard listings, a used 2018 Mazda 3 alternator lists between $30 and $315, with a median asking price of $76.
How much does it cost to replace a 2018 Mazda 3 alternator?
Using a used part, a 2018 Mazda 3 alternator replacement typically runs $170–$450 all-in: the median used alternator for this year lists at $76, and independent-shop labor for alternator replacement typically takes 1–2.5 hours at $95–$150/hr ($95–$375). Labor is a national part-level estimate, not a quote for your vehicle.
Will a 2018 Mazda 3 alternator fit another year?
Based on salvage-yard interchange data, listings for the 2018 Mazda 3 alternator also appear under model years 2014, 2015, 2016, 2017, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 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.