2021 Audi S4 WAUB4AF4-M — group A

68 vehicles sit in group A of this build. Cars are filed by a fixed rule based on the VIN, so a car never moves between groups.

What WAUB4AF4-M means

WAU
the World Manufacturer Identifier Audi registered — assembled in Germany
B4AF4
together encode the S4 line — Sedan, 3L 6cyl, All-wheel drive — as Audi filed it, these five characters are read as one block, not letter by letter
M
in position 10 — model year 2021
9, 11–17
vehicle-specific fields: check digit, plant code and production sequence

Vehicles in this group

68 vehicles in this group, in fixed VIN order.

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