Factory build sheet
2018 Audi A3 Premium Plus
Build WAU5ULFF-J · 2L 4cyl · Front-wheel drive · Convertible
VIN positions 1 through 8 read WAU5ULFF and position 10 reads J. Those nine characters define this build. Position 9 and positions 11 through 17 differ on every car.
Every A3 whose VIN starts WAU5ULFF and carries J in position 10 left the plant with the same engine, transmission, drivetrain and equipment listed below. We know of 111 of them.
- Decoded Jul 7, 2026
- 111 known VINs
- 1 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
- Configuration
- In-Line
- Engine model
- 2l i4
- Engine manufacturer
- Audi
- Horsepower
- 186 hp
- Fuel type
- Gasoline
Drivetrain
- Drive type
- Front-wheel drive
- Transmission
- Automatic
Body & chassis
- Body class
- Convertible/Cabriolet
- NHTSA body type
- PASSENGER CAR
- Doors
- 2
- Seats
- 4
- Seat rows
- 2
- Series
- Cabriolet
- 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
- 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 WAU5ULFF for 3 model years. Nothing but the year changes between these pages, so the price gap between them is depreciation on an identical car.
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 | 5ULFF | Model, body style, engine and restraint system |
| 9 | × | Check digit — computed per vehicle, not part of the build |
| 10 | J | Model year — 2018 |
| 11 | × | Assembly plant |
| 12–17 | ×××××× | Production sequence number, unique to each vehicle |
111 vehicles carry this build
Every VIN we have decoded to WAU5ULFF-J shares the specification above.
- 111 Known VINs
- 1 Listed for sale now
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 A3, 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.
- 2018 Premium 2L 4-cyl · Convertible cabriolet · FWD 244 vehicles · $17,984 median
- 2018 Quattro Premium, Quattro Komfort (Canada) 2L 4-cyl · Convertible cabriolet · AWD 151 vehicles
- 2018 Premium, Komfort (Canada) 2L 4-cyl · Sedan saloon · FWD 144 vehicles
- 2018 Quattro Premium Plus, S Line Quattro Progressiv (Canada) 2L 4-cyl · Sedan saloon · AWD 1,628 vehicles · $17,295 median
- 2018 E-Tron Prestige, Technik (Canada) 1.4L 4-cyl · Hatchback liftback notchback · FWD 110 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.
Vehicle counts come from the 111 VINs of this build we have seen in dealer inventory. They are a sample of the road population, not a production figure.