2004 Opel Signum vs. 2011 Opel Astra
To start off, 2011 Opel Astra is newer by 7 year(s). Which means there will be less support and parts availability for 2004 Opel Signum. In addition, the cost of maintenance, including insurance, on 2004 Opel Signum would be higher. At 1,910 cc (4 cylinders), 2011 Opel Astra is equipped with a bigger engine. In terms of performance, 2011 Opel Astra (148 HP @ 4000 RPM) has 25 more horse power than 2004 Opel Signum. (123 HP @ 6000 RPM) In normal driving conditions, 2011 Opel Astra should accelerate faster than 2004 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2004 Opel Signum weights approximately 87 kg more than 2011 Opel Astra.
Both vehicles are front wheel drive (FWD). Which offers better traction when its slippery than rear wheel drive vehicles. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 2011 Opel Astra (320 Nm @ 2000 RPM) has 153 more torque (in Nm) than 2004 Opel Signum. (167 Nm @ 3800 RPM). This means 2011 Opel Astra will have an easier job in driving up hills or pulling heavy equipment than 2004 Opel Signum.
Compare all specifications:
| 2004 Opel Signum | 2011 Opel Astra | |
| Make | Opel | Opel |
| Model | Signum | Astra |
| Year Released | 2004 | 2011 |
| Engine Position | Front | Front |
| Engine Size | 1796 cc | 1910 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 123 HP | 148 HP |
| Engine RPM | 6000 RPM | 4000 RPM |
| Torque | 167 Nm | 320 Nm |
| Torque RPM | 3800 RPM | 2000 RPM |
| Engine Bore Size | 80.5 mm | 82 mm |
| Engine Stroke Size | 88.2 mm | 90.4 mm |
| Engine Compression Ratio | 10.5:1 | 17.5:1 |
| Fuel Type | Gasoline - Premium | Diesel |
| Top Speed | 197 km/hour | 210 km/hour |
| Acceleration 0-100mph | 12.2 seconds | 8.9 seconds |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1480 kg | 1393 kg |
| Vehicle Length | 4640 mm | 4300 mm |
| Vehicle Width | 1800 mm | 1760 mm |
| Vehicle Height | 1470 mm | 1440 mm |
| Wheelbase Size | 2640 mm | 2620 mm |
| Fuel Consumption Overall | 8.1 L/100km | 5.8 L/100km |
| Fuel Tank Capacity | 60 L | 52 L |
