The Alfa Romeo 156 Facelift 2003 (2003-2005) was offered with 12 distinct engine configurations across its trim range.
| Engine | Power | Torque | Transmission | Drive | Top speed | 0-100 km/h | Consumption | Available on |
|---|---|---|---|---|---|---|---|---|
| 3.2L Petrol | 250 hp | 300 Nm | Automatic | Front Wheel Drive | 250 km/h | 6.3 s | 12.1 l/100km | 1 trim |
| 3.2L Petrol | 250 hp | 300 Nm | Manual | Front Wheel Drive | 250 km/h | 6.3 s | 12.1 l/100km | 1 trim |
| 2.5L Petrol | 192 hp | 218 Nm | Automatic | Front Wheel Drive | 227 km/h | 8.5 s | 11.9 l/100km | 1 trim |
| 2.5L Petrol | 192 hp | 218 Nm | Manual | Front Wheel Drive | 230 km/h | 7.3 s | 11.8 l/100km | 2 trims |
| 2.4L Diesel | 175 hp | 385 Nm | Manual | Front Wheel Drive | 225 km/h | 8.3 s | 6.6 l/100km | 3 trims |
| 2.0L Petrol | 165 hp | 206 Nm | Automatic | Front Wheel Drive | 220 km/h | 8.2 s | 8.6 l/100km | 3 trims |
| 2.0L Petrol | 165 hp | 206 Nm | Manual | Front Wheel Drive | 220 km/h | 8.2 s | 8.6 l/100km | 4 trims |
| 1.9L Diesel | 150 hp | 305 Nm | Manual | Front Wheel Drive | 209 km/h | 9.3 s | 5.9 l/100km | 3 trims |
| 1.9L Diesel | 140 hp | 305 Nm | Manual | Front Wheel Drive | 209 km/h | 9.3 s | 5.9 l/100km | 4 trims |
| 1.7L Petrol | 140 hp | 163 Nm | Manual | Front Wheel Drive | 208 km/h | 9.4 s | 8.5 l/100km | 4 trims |
| 1.6L Petrol | 120 hp | 146 Nm | Manual | Front Wheel Drive | 200 km/h | 10.5 s | 8.2 l/100km | 4 trims |
| 1.9L Diesel | 115 hp | 275 Nm | Manual | Front Wheel Drive | 191 km/h | 10.3 s | 5.8 l/100km | 4 trims |
Each row is a distinct mechanical configuration — engine size, power output, transmission, drivetrain and fuel type — deduplicated across equipment trims that share the same engine. Trim-only differences (interior, wheels, options) do not create a separate row.