| Fortschritt | Year from | Year to | Engine | HP | 
|---|---|---|---|---|
| Fortschritt ZT 300 | 1967 | 1984 | 6.6 l, 4 cylindry | 98.6 KM (73.5 kW) | 
| Fortschritt ZT 303 | 1971 | 1984 | 6.6 l, 4 cylindry | 98.6 KM (73.5 kW) | 
| Fortschritt ZT 320 | 1984 | 1990 | 6.6 l, 4 cylindry | 98.6 KM (73.5 kW) | 
| Fortschritt ZT 323 | 1984 | 1990 | 6.6 l, 4 cylindry | 98.6 KM (73.5 kW) |