Audi
ETKA – Engine identification letters
1st Column = Engine identification letters
| Engine identification letters | kW | HP | Litre | Cylinder | When installed | Model | Remarks |
| 1Y | 47 | 64 | 1,9 | 4 | 08/89-12/91 | Audi 80 | Diesel |
| 1Z | 66 | 90 | 1,9 | 4 | 09/91-07/95 | Audi 80 | TDI |
| 1Z | 66 | 90 | 1,9 | 4 | 01/95-07/96 | Audi A4 | Creece TDI |
| 1Z | 66 | 90 | 1,9 | 4 | 01/95-07/96 | Audi A4 | TDI |
| 1Z | 66 | 90 | 1,9 | 4 | 07/94-06/96 | Audi A6 | TDI |
| 1Z | 66 | 90 | 1,9 | 4 | 07/95-07/96 | Audi Cabrio | TDI |
| 6A | 101 | 137 | 2 | 4 | 01/92-07/92 | Audi Coupe | |
| 6A | 101 | 137 | 2 | 4 | 03/90-07/92 | Audi 80 | |
| 7A | 125 | 170 | 2,3 | 5 | 06/88-12/91 | Audi 90 | |
| 7A | 125 | 170 | 2,3 | 5 | 11/88-07/91 | Audi Coupe |