Factory build sheet
2025 Audi A4 S Line Quattro Premium
Build WAUDAAF4-S · 2L 4cyl · All-wheel drive · Sedan
VIN positions 1 through 8 read WAUDAAF4 and position 10 reads S. Those nine characters define this build. Position 9 and positions 11 through 17 differ on every car.
Every A4 whose VIN starts WAUDAAF4 and carries S in position 10 left the plant with the same engine, transmission, drivetrain and equipment listed below. We know of 169 of them.
- Decoded Jul 7, 2026
- 169 known VINs
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
Body & chassis
- Body class
- Sedan/Saloon
- NHTSA body type
- PASSENGER CAR
- Doors
- 4
- Manufacturer
- AUDI AG
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
- 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.
The same build, other model years
Audi used the VIN pattern WAUDAAF4 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 Quattro Premium 2L 4cyl Sedan · 1,104 vehicles code M $22,102
- 2022 S Line Quattro Premium 2L 4cyl Sedan · 167 vehicles code N $24,998
- 2023 S Line Quattro Premium 2L 4cyl Sedan · 648 vehicles code P $28,799
- 2024 Quattro Premium 2L 4cyl Sedan · 581 vehicles code R $30,245
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2025 You are here 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 | DAAF4 | Model, body style, engine and restraint system |
| 9 | × | Check digit — computed per vehicle, not part of the build |
| 10 | S | Model year — 2025 |
| 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 2025 Audi A4 as a whole rather than this build alone.
Overall
★★★★★ 5 / 5
Frontal crash
★★★★ ★ 4 / 5
Side crash
★★★★★ 5 / 5
Rollover
★★★★★ 5 / 5
169 vehicles carry this build
Every VIN we have decoded to WAUDAAF4-S shares the specification above.
- 169 Known VINs
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.
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.
Vehicle counts come from the 169 VINs of this build we have seen in dealer inventory. They are a sample of the road population, not a production figure.