Factory build sheet
2021 Audi A4 Quattro Premium Plus
Build WAUEAAF4-M · 2L 4cyl · All-wheel drive · Sedan
VIN positions 1 through 8 read WAUEAAF4 and position 10 reads M. Those nine characters define this build. Position 9 and positions 11 through 17 differ on every car.
Every A4 whose VIN starts WAUEAAF4 and carries M in position 10 left the plant with the same engine, transmission, drivetrain and equipment listed below. We know of 3,604 of them.
- Decoded Jul 7, 2026
- 3,604 known VINs
- 46 listed for sale now
Factory specification
As filed by Audi 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 L
- Cylinders
- 4
- Engine model
- 45 TFSI (2.0T)
- Turbocharged
- Yes
- Horsepower
- 261 hp
- Fuel type
- Gasoline
Drivetrain
- Drive type
- All-wheel drive
- Transmission
- Automatic
- Forward speeds
- 7
Body & chassis
- Body class
- Sedan/Saloon
- NHTSA body type
- PASSENGER CAR
- Doors
- 4
- Seats
- 5
- Seat rows
- 2
- Manufacturer
- AUDI AG
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.
Driver assistance, as built
- Forward collision warning Standard
- Crash imminent braking Standard
- Blind spot warning 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.
$24,598 median asking price · 56 listings · as of Aug 30, 2026
Low 2% of listings $18,459 Top 2% of listings $29,991
The same build, other model years
Audi used the VIN pattern WAUEAAF4 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 $24,598
- 2022 S Line Quattro Premium Plus 2L 4cyl Sedan · 2,985 vehicles code N $24,484
- 2023 S Line Quattro Premium Plus 2L 4cyl Sedan · 6,103 vehicles code P $28,995
- 2024 Quattro Premium Plus 2L 4cyl Sedan · 2,961 vehicles code R $25,744
- 2025 S Line Quattro Premium Plus 2L 4cyl Sedan · 201 vehicles code S
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 | WAU | AUDI AG · World manufacturer identifier |
| 4–8 | EAAF4 | 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 Audi A4 as a whole rather than this build alone.
Overall
★★★★★ 5 / 5
Frontal crash
★★★★ ★ 4 / 5
Side crash
★★★★★ 5 / 5
Rollover
★★★★★ 5 / 5
4 recall campaigns are recorded for the 2021 A4. Recalls are issued per VIN range — check the VIN of the car you are looking at, not the model.
3,604 vehicles carry this build
Every VIN we have decoded to WAUEAAF4-M shares the specification above.
- 3,604 Known VINs
- 46 Listed for sale now
- 56 Priced listings
- $24,598 Median asking
Vehicles of this build
A fixed sample of 2 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 A4, 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 Quattro Premium Plus 2L 4-cyl · Sedan saloon · AWD 48 vehicles
- 2021 Quattro Prestige 2L 4-cyl · Sedan saloon · AWD 118 vehicles
- 2022 Quattro Premium 2L 4-cyl · Sedan saloon · AWD 1,527 vehicles · $21,995 median
- 2022 Quattro Prestige 2L 4-cyl · Sedan saloon · AWD 91 vehicles · $26,542 median
- 2022 S Line Quattro Premium Plus 2L 4-cyl · Sedan saloon · AWD 34 vehicles
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 56 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 3,604 VINs of this build we have seen in dealer inventory. They are a sample of the road population, not a production figure.