2009 Audi A4 WAULF78K-9 — group 18

16 vehicles sit in group 18 of this build. Cars are filed by a fixed rule based on the VIN, so a car never moves between groups.

What WAULF78K-9 means

WAU: the World Manufacturer Identifier Audi registered — assembled in Germany
LF78K: together encode the A4 line — Sedan, 2L 4cyl, All-wheel drive — as Audi filed it, these five characters are read as one block, not letter by letter
9: in position 10 — model year 2009
9, 11–17: vehicle-specific fields: check digit, plant code and production sequence