Technical specifications
| Clear list | Opel Signum (2005-2008) | Citroen DS4 |
| Totals | Opel Signum (2005-2008) 1.9 CDTI × | Citroen DS4 1.6 HDi × |
| Mark | Opel | Citroen |
| Model | Signum (2005-2008) 1.9 CDTI | DS4 1.6 HDi |
| Year | 2005-2008 | 2011 |
| Number of doors/seats | 5/5 | 5/5 |
| Body type | Hatch | Hatch |
| Unladen Weight | 1495 | 1365 (1375) |
| Gross Weight Limit | 2020 | - |
| Top Speed, km/h | 180 | 190 |
| Acceleration 0-100 kph | 14 | 11.3 |
| Minimum turning radius, m | 5.95 | 5.4 |
| Cargo Volume, min/max, L | 365/1410 | 385/1021 |
| Dimensions specifications, mm | Opel Signum (2005-2008) 1.9 CDTI × | Citroen DS4 1.6 HDi × |
| Length | 4650 | 4275 |
| Width | 1800 | 1810 |
| Height | 1460 | 1523 |
| Wheelbase | 2830 | 2612 |
| Front/rear Track | 1535/1525 | 1531/1526 |
| Ground clearance | - | 170 |
| Engine specifications | Opel Signum (2005-2008) 1.9 CDTI × | Citroen DS4 1.6 HDi × |
| Type | turbo diesel Common Rail | turbo diesel Common Rail |
| Displacement, cm3 | 1910 | 1560 |
| Compression ratio | 18 | 16 |
| Number and arrangement of cylinders | 4 cylinders, in-line | 4 cylinders, in-line |
| The diameter of the cylinder x stroke, mm | 82х90.4 | 75х88.3 |
| Number of valves | 16 | 16 |
| Power, hp/rpm | 100/3500 | 112/3600 |
| Max torque, Nm/RPM | 260/1700 | 270/1750 |
| Transmission specifications | Opel Signum (2005-2008) 1.9 CDTI × | Citroen DS4 1.6 HDi × |
| Gearbox | 6-speed manual | 6-speed manual / 6-speed automatic |
| Drive Type | Front wheel drive | Front wheel drive |
| Suspension specifications | Opel Signum (2005-2008) 1.9 CDTI × | Citroen DS4 1.6 HDi × |
| Front | MacPherson strut | MacPherson strut |
| Rear | multi-link suspensions | Dependent suspensions |
| Tire Size | 215/55/16 | 215/60 R16, 215/55 R17 |
| Disk | 5x110 ET41 d65,1
| 4x108 ET25 d65.1
|
| Brakes specifications | Opel Signum (2005-2008) 1.9 CDTI × | Citroen DS4 1.6 HDi × |
| Front | Ventilated discs | Ventilated discs |
| Rear | Discs | Discs |
| Fuel consumption specifications, L/100 km | Opel Signum (2005-2008) 1.9 CDTI × | Citroen DS4 1.6 HDi × |
| City | 7.6 | 5.9 (4.8) |
| Highway | 4.9 | 4 (4.1) |
| Combined | 5.9 | 4.7 (4.4) |
| Fuel | Diesel | Diesel |
| Tank, L | 60 | 60 |
| Clear list | Opel Signum (2005-2008) | Citroen DS4 |
