Technical specifications
| Clear list | Opel Signum (2005-2008) | Opel Astra (2010-2015) |
| Totals | Opel Signum (2005-2008) 1.8 × | Opel Astra (2010-2015) 1.8 GTC × |
| Mark | Opel | Opel |
| Model | Signum (2005-2008) 1.8 | Astra (2010-2015) 1.8 GTC |
| Year | 2005-2008 | 2010-2015 |
| Number of doors/seats | 5/5 | 3/5 |
| Body type | Hatch | Hatch |
| Unladen Weight | 1405 | 1318-1475 |
| Gross Weight Limit | 1995 | 1850-2045 |
| Top Speed, km/h | 207 | 200 |
| Acceleration 0-100 kph | 11.3 | 10.7 |
| Minimum turning radius, m | 5.95 | 5.7 |
| Cargo Volume, min/max, L | 365/1410 | 380 |
| Dimensions specifications, mm | Opel Signum (2005-2008) 1.8 × | Opel Astra (2010-2015) 1.8 GTC × |
| Length | 4650 | 4466 |
| Width | 1800 | 1840 |
| Height | 1460 | 1482 |
| Wheelbase | 2830 | 2695 |
| Front/rear Track | 1535/1525 | 1584/1585 |
| Ground clearance | - | - |
| Engine specifications | Opel Signum (2005-2008) 1.8 × | Opel Astra (2010-2015) 1.8 GTC × |
| Type | petrol Injection | petrol Injection |
| Displacement, cm3 | 1796 | 1796 |
| Compression ratio | 10.5 | 10.5 |
| Number and arrangement of cylinders | 4 cylinders, in-line | 4 cylinders, in-line |
| The diameter of the cylinder x stroke, mm | 80.5х88.2 | 80.5х88.2 |
| Number of valves | 16 | 16 |
| Power, hp/rpm | 140/6300 | 140/6300 |
| Max torque, Nm/RPM | 175/3800 | 175/3800 |
| Transmission specifications | Opel Signum (2005-2008) 1.8 × | Opel Astra (2010-2015) 1.8 GTC × |
| Gearbox | 5-speed manual | 5-speed manual |
| Drive Type | Front wheel drive | Front wheel drive |
| Suspension specifications | Opel Signum (2005-2008) 1.8 × | Opel Astra (2010-2015) 1.8 GTC × |
| Front | MacPherson strut | MacPherson strut |
| Rear | multi-link suspensions | Dependent suspensions |
| Tire Size | 215/55/16 | 205/60/16, 235/55/17 |
| Disk | 5x110 ET41 d65,1
| 5x110 ET35 d65.1
|
| Brakes specifications | Opel Signum (2005-2008) 1.8 × | Opel Astra (2010-2015) 1.8 GTC × |
| Front | Ventilated discs | Ventilated discs |
| Rear | Discs | Discs |
| Fuel consumption specifications, L/100 km | Opel Signum (2005-2008) 1.8 × | Opel Astra (2010-2015) 1.8 GTC × |
| City | 10.4 | 9.1 |
| Highway | 6.1 | 5.5 |
| Combined | 7.7 | 6.8 |
| Fuel | 95 | 95 |
| Tank, L | 60 | 56 |
| Clear list | Opel Signum (2005-2008) | Opel Astra (2010-2015) |
