History of the exact car
A shared engine says nothing about accidents or odometer changes. Review records for the full VIN.
Start with the VIN ↑Understand the car behind the VIN
2021 Audi A4 Allroad Quattro Premium Plus specifications
Build WA18ABF4-M · 2L 4cyl · All-wheel drive · Crossover Utility Vehicle (CUV)
Explore the specifications recorded for VIN pattern WA18ABF4-M. Start here to understand this version, then check the full VIN for an individual car.
NHTSA vPIC decode · Pattern-level specifications
- Decoded Sep 9, 2026
- 10 known VINs
- 1 listings reported active
- Engine
- 2L 4cyl
- Power
- 261 hp
- Transmission
- Automatic
- Drive
- All-wheel drive
- Body
- Crossover Utility Vehicle (CUV), 4-door
- Weight class
- Class 1D
The essentials, explained
Engine, transmission & body specifications
As filed by Audi with NHTSA for this VIN pattern. 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
- 20l i4 16v gdi dohc turbo
- Horsepower
- 261 hp
- Fuel type
- Gasoline
Drivetrain
- Drive type
- All-wheel drive
- Transmission
- Automatic
Body & chassis
- Body class
- Crossover Utility Vehicle (CUV)
- NHTSA body type
- MULTIPURPOSE PASSENGER VEHICLE (MPV)
- Doors
- 4
- Manufacturer
- AUDI AG
Weight rating
- GVWR class
- Class 1D
- GVWR
- 5,001–6,000 lb
Gross vehicle weight rating is the loaded ceiling set by the manufacturer, not the car's own weight.
Put the model year in context
Compare asking prices by model year
Explore 3 model years with VIN prefix WA18ABF4. These are different vehicles: price differences also reflect mileage, condition, equipment and the listings available. They are not a depreciation forecast.
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.
VIN positions 1 through 8 read WA18ABF4 and position 10 reads M. Those nine characters define this build. Position 9 and positions 11 through 17 describe the check digit, assembly plant and production sequence; they are not part of this pattern.
| Positions | Characters | What they encode |
|---|---|---|
| 1–3 | WA1 | AUDI AG · World manufacturer identifier |
| 4–8 | 8ABF4 | 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 |
From a version to your vehicle
Is this the car you’re looking at?
Enter the full VIN — the 17 characters on the windshield or title — to open the vehicle’s page.
Explore actual vehicles
10 known VINs for this pattern
Every VIN we have decoded to WA18ABF4-M is associated with this pattern in our records. Shared specifications do not mean shared history, condition or installed options.
- 10 Known VINs
- 1 Listings reported active
Keep going
Useful answers, without the guesswork
2021 Audi A4 Allroad: specification questions
What engine code is recorded for WA18ABF4-M?
The recorded engine model is 20l i4 16v gdi dohc turbo. This is pattern-level data; confirm the installed engine on a vehicle that may have been modified.
Is this an original window sticker?
No. This page summarizes decoded VIN-pattern specifications. An original sticker or build record is needed to verify the optional equipment of a particular car.
Are the known VINs a production total?
No. These are VINs observed in our records. The count does not establish total production or rarity.
Does a missing specification mean the feature is absent?
No. Missing fields mean that a value is not recorded in this decode. Check the individual vehicle and its manufacturer documentation.
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 10 VINs of this build we have seen in dealer inventory. They are a sample of the road population, not a production figure.
About the NHTSA vPIC data source ↗
Pattern decode updated September 9, 2026.