Factory build sheet
2021 Subaru Outback Premium+Smart
Build 4S4BTADC-M · 2.5L 4cyl · All-wheel drive · Sport Utility Vehicle (SUV)
VIN positions 1 through 8 read 4S4BTADC and position 10 reads M. Those nine characters define this build. Position 9 and positions 11 through 17 differ on every car.
Every Outback whose VIN starts 4S4BTADC and carries M in position 10 left the plant with the same engine, transmission, drivetrain and equipment listed below. We know of 7,842 of them.
- Decoded Jul 7, 2026
- 7,842 known VINs
- 97 listed for sale now
Factory specification
As filed by Subaru 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
- 2.5 L
- Cylinders
- 4
- Engine model
- 25l h4 16v gdi dohc
- Horsepower
- 182 hp
- Fuel type
- Gasoline
Drivetrain
- Drive type
- All-wheel drive
Body & chassis
- Body class
- Sport Utility Vehicle (SUV)/Multi-Purpose Vehicle (MPV)
- NHTSA body type
- MULTIPURPOSE PASSENGER VEHICLE (MPV)
- Doors
- 4
- Seats
- 5
- Seat rows
- 2
- Manufacturer
- SUBARU OF AMERICA, INC
Weight rating
- GVWR class
- Class 1C
- GVWR
- 4,001–5,000 lb
Gross vehicle weight rating is the loaded ceiling set by the manufacturer, not the car's own weight.
Driver assistance, as built
- Forward collision warning Standard
- Crash imminent braking Standard
- Lane departure warning Standard
- Lane keeping assistance Standard
- Adaptive cruise control Standard
Systems the filing does not record are not listed above. Check the window sticker of the exact car before you rely on any single feature.
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.
$20,848 median asking price · 154 listings · as of Aug 30, 2026
Low 2% of listings $13,999 Top 2% of listings $25,499
The same build, other model years
Subaru used the VIN pattern 4S4BTADC for 5 model years. Nothing but the year changes between these pages, so the price gap between them is depreciation on an identical car.
-
2021 You are here code M $20,848
- 2022 Premium 2.5L 4cyl Sport Utility Vehicle (SUV) · 10,785 vehicles code N $21,698
- 2023 Premium 2.5L 4cyl Sport Utility Vehicle (SUV) · 4,752 vehicles code P $23,589
- 2024 Premium 2.5L 4cyl Sport Utility Vehicle (SUV) · 10,509 vehicles code R $26,225
- 2025 Premium 2.5L 4cyl Sport Utility Vehicle (SUV) · 26,397 vehicles code S $30,280
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 | 4S4 | SUBARU OF AMERICA, INC · World manufacturer identifier |
| 4–8 | BTADC | Model, body style, engine and restraint system |
| 9 | × | Check digit — computed per vehicle, not part of the build |
| 10 | M | Model year — 2021 |
| 11 | × | Assembly plant |
| 12–17 | ×××××× | Production sequence number, unique to each vehicle |
NHTSA safety ratings
Crash-test results are published per model year and body style, so they cover the 2021 Subaru Outback as a whole rather than this build alone.
Overall
★★★★★ 5 / 5
Frontal crash
★★★★★ 5 / 5
Side crash
★★★★★ 5 / 5
Rollover
★★★★ ★ 4 / 5
4 recall campaigns are recorded for the 2021 Outback. Recalls are issued per VIN range — check the VIN of the car you are looking at, not the model.
7,842 vehicles carry this build
Every VIN we have decoded to 4S4BTADC-M shares the specification above.
- 7,842 Known VINs
- 97 Listed for sale now
- 154 Priced listings
- $20,848 Median asking
Vehicles of this build
A fixed sample of 4 vehicles carrying this configuration — each with its own history page. The sample refreshes quarterly, not nightly, so it stays put between visits.
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 Outback, 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.
- 2021 Premium+Smart+M/R+Navi 2.5L 4-cyl · Sport utility vehicle suv mult · AWD 7,515 vehicles · $20,327 median
- 2021 Limited+M/R+Navi(HK) 2.5L 4-cyl · Sport utility vehicle suv mult · AWD 16,325 vehicles · $23,345 median
- 2021 Touring+M/R+Navi(HK) 2.5L 4-cyl · Sport utility vehicle suv mult · AWD 4,120 vehicles · $24,920 median
- 2021 Limited+M/R+Navi(HK) 2.4L 4-cyl · Sport utility vehicle suv mult · AWD 6,166 vehicles · $23,195 median
- 2022 Premium 2.5L 4-cyl · Sport utility vehicle suv mult · AWD 6,813 vehicles · $21,550 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 154 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 7,842 VINs of this build we have seen in dealer inventory. They are a sample of the road population, not a production figure.