| Description | 1990 CoupeQ | 1991 90Q |
| Country (W = Germany) | W | W |
| Manufacturer (AU = Audi) | A | A |
| Series (G = CoupeQ*, H = 90Q) | G | H |
| Engine (D = very early**) | D | E |
| Restraint (0 = Active [PROCON TEN], 5 = Driver's Airbag) | 0 | 5 |
| Model (8B = CoupeQ, 8A = 90Q) | 8 | 8 |
| Check Digit (meaningless) | # | # |
| Model Year (L = 1990, M = 1991) | L | M |
| Assembly Plant (A = Ingolstadt) | A | A |
| Serial Number (unique number assigned to each vehicle) | # | # |
* The parts fiche says that the letter for the CoupeQ should be "K", but all of the ones I know of are "G".
** I don't know what the differences between the "D" and "E" engine designations are, but the "D" engines are found in the early Coupes (presumably the early 90s too, but I haven't found an early example). The change took place sometime during the July 1989 build dates. However, the "7A" engine identification is used for both versions.
