Factory build sheet
2004 Mazda MX-5
Build JM1NB353-4 · 1.8L · Convertible
VIN positions 1 through 8 read JM1NB353 and position 10 reads 4. Those nine characters define this build. Position 9 and positions 11 through 17 differ on every car.
Every MX-5 whose VIN starts JM1NB353 and carries 4 in position 10 left the plant with the same engine, transmission, drivetrain and equipment listed below. We know of 624 of them.
- Decoded Jul 7, 2026
- 624 known VINs
- 5 listed for sale now
Factory specification
As filed by Mazda with NHTSA for this build. Fields the filing does not record are left out entirely — a missing row means no recorded value, not a missing feature.
Engine
- Displacement
- 1.8 L
- Engine model
- BPD (1.8L)
- Horsepower
- 128 hp
- Fuel type
- Gasoline
Body & chassis
- Body class
- Convertible/Cabriolet
- NHTSA body type
- PASSENGER CAR
- Doors
- 2
- Series
- Coupe
- Manufacturer
- MAZDA MOTOR CORPORATION
Weight rating
- GVWR class
- Class 1
- GVWR
- 6,000 lb or less
Gross vehicle weight rating is the loaded ceiling set by the manufacturer, not the car's own weight.
What this build asks today
Asking prices of live dealer listings decoded to this exact configuration — narrower than the trim-level figure, because every car counted here shares the same engine, transmission and drivetrain.
$13,998 median asking price · 11 listings · as of Aug 30, 2026
Too few listings to publish a price range — with 11 cars on the market, the cheapest and the dearest are single cars, not a spread. The median above is what they ask in the middle.
The same build, other model years
Mazda used the VIN pattern JM1NB353 for 7 model years. Nothing but the year changes between these pages, so the price gap between them is depreciation on an identical car.
- 1999 Convertible · 2,336 vehicles code X $9,719
- 2000 Convertible · 1,152 vehicles code Y $9,995
- 2001 1.8L Convertible · 1,556 vehicles code 1 $9,900
- 2002 1.8L Convertible · 1,387 vehicles code 2 $12,000
- 2003 1.8L Convertible · 1,378 vehicles code 3 $14,988
-
2004 You are here code 4 $13,998
- 2005 1.8L Convertible · 360 vehicles code 5 $11,995
How this VIN pattern is read
A 17-character VIN carries two kinds of information: what was built, and which one it is. This page is the first kind — the nine highlighted positions.
| Positions | Characters | What they encode |
|---|---|---|
| 1–3 | JM1 | MAZDA MOTOR CORPORATION · World manufacturer identifier |
| 4–8 | NB353 | Model, body style, engine and restraint system |
| 9 | × | Check digit — computed per vehicle, not part of the build |
| 10 | 4 | Model year — 2004 |
| 11 | × | Assembly plant |
| 12–17 | ×××××× | Production sequence number, unique to each vehicle |
624 vehicles carry this build
Every VIN we have decoded to JM1NB353-4 shares the specification above.
- 624 Known VINs
- 5 Listed for sale now
- 11 Priced listings
- $13,998 Median asking
Cars are filed by a fixed rule based on the VIN, so a car never moves between groups.
Neighboring configurations
Other factory configurations of the MX-5, each with its own build sheet. The set is fixed by the VIN patterns themselves, so it does not shuffle as prices or inventory move.
- 2004 2 DR Turbo Convertible Convertible cabriolet 339 vehicles · $15,041 median
- 2005 1.8L · Convertible cabriolet 360 vehicles · $11,995 median
- 2005 Speed Convertible cabriolet 112 vehicles · $18,990 median
- 2007 2L · Convertible cabriolet 1,647 vehicles · $10,997 median
- 2008 2L · Convertible cabriolet · RWD 1,433 vehicles · $13,995 median
Keep going
Where this data comes from
Specification fields are decoded from the manufacturer's filings in the NHTSA vPIC database, keyed on VIN positions 1–8 and 10. We publish the filed values as they stand and leave out anything the filing does not record.
Prices are asking prices from 11 live dealer listings decoded to this build , last updated August 30, 2026 . They are what sellers ask, not what buyers paid.
Vehicle counts come from the 624 VINs of this build we have seen in dealer inventory. They are a sample of the road population, not a production figure.