2005 Opel Signum vs. 2011 Opel Astra
To start off, 2011 Opel Astra is newer by 6 year(s). Which means there will be less support and parts availability for 2005 Opel Signum. In addition, the cost of maintenance, including insurance, on 2005 Opel Signum would be higher. At 2,958 cc (6 cylinders), 2005 Opel Signum is equipped with a bigger engine. In terms of performance, 2005 Opel Signum (175 HP @ 4000 RPM) has 27 more horse power than 2011 Opel Astra. (148 HP @ 4000 RPM). In normal driving conditions, 2005 Opel Signum should accelerate faster than 2011 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2005 Opel Signum weights approximately 277 kg more than 2011 Opel Astra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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, 2005 Opel Signum (370 Nm @ 1900 RPM) has 50 more torque (in Nm) than 2011 Opel Astra. (320 Nm @ 2000 RPM). This means 2005 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2011 Opel Astra.
Compare all specifications:
| 2005 Opel Signum | 2011 Opel Astra | |
| Make | Opel | Opel |
| Model | Signum | Astra |
| Year Released | 2005 | 2011 |
| Engine Position | Front | Front |
| Engine Size | 2958 cc | 1910 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 175 HP | 148 HP |
| Engine RPM | 4000 RPM | 4000 RPM |
| Torque | 370 Nm | 320 Nm |
| Torque RPM | 1900 RPM | 2000 RPM |
| Engine Bore Size | 87.5 mm | 82 mm |
| Engine Stroke Size | 82 mm | 90.4 mm |
| Engine Compression Ratio | 18.5:1 | 17.5:1 |
| Fuel Type | Diesel | Diesel |
| Top Speed | 221 km/hour | 210 km/hour |
| Acceleration 0-100mph | 9.4 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 | 1670 kg | 1393 kg |
| Vehicle Length | 4640 mm | 4300 mm |
| Vehicle Width | 1800 mm | 1760 mm |
| Vehicle Height | 1470 mm | 1440 mm |
| Wheelbase Size | 2620 mm | 2620 mm |
| Fuel Consumption Overall | 7.6 L/100km | 5.8 L/100km |
| Fuel Tank Capacity | 60 L | 52 L |
