Technical specifications
| Clear list | Alfa Romeo Giulietta | Seat Leon |
| Totals | Alfa Romeo Giulietta 1.6 JTDM × | Seat Leon 1.2 TSI (105 PS) × |
| Mark | Alfa Romeo | Seat |
| Model | Giulietta 1.6 JTDM | Leon 1.2 TSI (105 PS) |
| Year | 2010 | 2012 |
| Number of doors/seats | 5/5 | 5/5 |
| Body type | Hatch | Hatch |
| Unladen Weight | 1385 | 1195 (1222) |
| Gross Weight Limit | - | 1710 (1730) |
| Top Speed, km/h | 185 | 191 |
| Acceleration 0-100 kph | 11.3 | 10.1 (10) |
| Minimum turning radius, m | - | 5.1 |
| Cargo Volume, min/max, L | 350/1045 | 380 |
| Dimensions specifications, mm | Alfa Romeo Giulietta 1.6 JTDM × | Seat Leon 1.2 TSI (105 PS) × |
| Length | 4351 | 4263 |
| Width | 1798 | 1816 |
| Height | 1465 | 1459 |
| Wheelbase | 2634 | 2636 |
| Front/rear Track | 1554/1554 | 1549/1520 |
| Ground clearance | - | - |
| Engine specifications | Alfa Romeo Giulietta 1.6 JTDM × | Seat Leon 1.2 TSI (105 PS) × |
| Type | turbo diesel Common Rail | Gasoline Direct Injection, turbocharging |
| Displacement, cm3 | 1598 | 1197 |
| Compression ratio | 16.5 | 10.5 |
| Number and arrangement of cylinders | 4 cylinders, in-line | 4 cylinders, in-line |
| The diameter of the cylinder x stroke, mm | 79.5х80.5 | 71х75.6 |
| Number of valves | 16 | 16 |
| Power, hp/rpm | 105/4000 | 105/5000 |
| Max torque, Nm/RPM | 320/1750 | 175/1400-4000 |
| Transmission specifications | Alfa Romeo Giulietta 1.6 JTDM × | Seat Leon 1.2 TSI (105 PS) × |
| Gearbox | 6-speed manual | 5-speed manual / 7-speed, Automatic DSG |
| Drive Type | Front wheel drive | Front wheel drive |
| Suspension specifications | Alfa Romeo Giulietta 1.6 JTDM × | Seat Leon 1.2 TSI (105 PS) × |
| Front | MacPherson strut | MacPherson strut |
| Rear | multi-link suspensions | Dependent suspensions |
| Tire Size | 205/55 R16 | 195/65 R15, 205/55 R16, 225/45 R17 |
| Disk | 5x110 ET41 d65.1
| 5x112 ET46 d57.1
|
| Brakes specifications | Alfa Romeo Giulietta 1.6 JTDM × | Seat Leon 1.2 TSI (105 PS) × |
| Front | Ventilated discs | Ventilated discs |
| Rear | Discs | Discs |
| Fuel consumption specifications, L/100 km | Alfa Romeo Giulietta 1.6 JTDM × | Seat Leon 1.2 TSI (105 PS) × |
| City | 5.5 | 6.5 (6) |
| Highway | 3.7 | 4.4 (4.1) |
| Combined | 4.4 | 5.2 (4.9) |
| Fuel | Diesel | 95 |
| Tank, L | 60 | 50 |
| Clear list | Alfa Romeo Giulietta | Seat Leon |
