The Alfa Romeo 166 (2003-2007) was offered with 7 distinct engine configurations across its trim range.
| Engine | Power | Torque | Transmission | Drive | Top speed | 0-100 km/h | Consumption | Available on |
|---|---|---|---|---|---|---|---|---|
| 3.2L Petrol | 240 hp | 289 Nm | Manual | Front Wheel Drive | 245 km/h | 7.4 s | 12.5 l/100km | 2 trims |
| 3.0L Petrol | 220 hp | 265 Nm | Automatic | Front Wheel Drive | 236 km/h | 8.6 s | 13.0 l/100km | 2 trims |
| 2.5L Petrol | 188 hp | 221 Nm | Manual | Front Wheel Drive | 225 km/h | 8.4 s | 11.9 l/100km | 2 trims |
| 2.4L Diesel | 175 hp | 385 Nm | Automatic | Front Wheel Drive | 218 km/h | 8.9 s | 8.9 l/100km | 2 trims |
| 2.4L Diesel | 175 hp | 385 Nm | Manual | Front Wheel Drive | 222 km/h | 8.9 s | 7.5 l/100km | 2 trims |
| 2.4L Diesel | 150 hp | 305 Nm | Manual | Front Wheel Drive | 210 km/h | 9.9 s | 7.2 l/100km | 4 trims |
| 2.0L Petrol | 150 hp | 181 Nm | Manual | Front Wheel Drive | 211 km/h | 9.8 s | 9.7 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.