Top speed: 4 of 4 variants rated.
Alfa Romeo 90 2.5 QO tops the Alfa Romeo 90 ranking by Top speed, at 203 km/h (126 mph).
| # | Variant | Year | Body | Fuel | Top speed |
|---|---|---|---|---|---|
| 1 | Alfa Romeo 90 2.5 QO | 1984 | Sedan | Petrol | 203 km/h (126 mph) |
| 2 | Alfa Romeo 90 2.0 | 1984 | Sedan | Petrol | 192 km/h (119 mph) |
| 3 | Alfa Romeo 90 2.0 Motronic | 1984 | Sedan | Petrol | 192 km/h (119 mph) |
| 4 | Alfa Romeo 90 2.4 Turbo D | 1984 | Sedan | Diesel | 178 km/h (111 mph) |