My understanding was that the B9 platform only offered a single rear fog light. However, last night I saw a B9 A4 (not sure of the year but it wasn't a B9.5) with dual rear fog lights. It didn't have Euro taillights as it had the sweeping blinker along with the "solid" portion to meet American lighting standards.
Please excuse the poor quality of the photo as it was extremely foggy and I was driving but you can clearly see the dual foglights.
Untitled.jpg
Bookmarks