| Version/Engine | Serial power | Tuning power | Serial torque | Tuning torque | Technical data |
 ALFA ROMEO Giulietta 1.6 JTDM CR R4 16V DOHC 77kW/105KM |
105 HP | 136 HP (+31) | 320 Nm | 380 Nm (+60) | show data |
| ALFA ROMEO Giulietta 1.4 TB R4 16V DOHC 88kW/120KM |
120 HP | 140 HP (+20) | 206 Nm | 240 Nm (+34) | show data |
| ALFA ROMEO Giulietta 2.0 JTDM CR R4 16V DOHC 125kW/170 KM |
140 HP | 170 HP (+30) | 350 Nm | 450 Nm (+100) | show data |
| ALFA ROMEO Giulietta 2.0 JTDM CR R4 16V DOHC 125kW/170 KM |
170 HP | 200 HP (+30) | 360 Nm | 440 Nm (+80) | show data |
 ALFA ROMEO Giulietta 1.4 TB MultiAir R4 16V DOHC 125kW/170KM |
170 HP | 200 HP (+30) | 250 Nm | 300 Nm (+50) | show data |
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