2008 Opel Signum vs. 2007 Opel Astra
To start off, 2008 Opel Signum is newer by 1 year(s). Which means there will be less support and parts availability for 2007 Opel Astra. In addition, the cost of maintenance, including insurance, on 2007 Opel Astra would be higher. At 1,998 cc (4 cylinders), 2007 Opel Astra is equipped with a bigger engine. In terms of performance, 2007 Opel Astra (197 HP @ 5400 RPM) has 48 more horse power than 2008 Opel Signum. (149 HP @ 4000 RPM) In normal driving conditions, 2007 Opel Astra should accelerate faster than 2008 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2008 Opel Signum weights approximately 228 kg more than 2007 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, 2008 Opel Signum (315 Nm @ 2000 RPM) has 53 more torque (in Nm) than 2007 Opel Astra. (262 Nm @ 1950 RPM). This means 2008 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2007 Opel Astra.
Compare all specifications:
| 2008 Opel Signum | 2007 Opel Astra | |
| Make | Opel | Opel |
| Model | Signum | Astra |
| Year Released | 2008 | 2007 |
| Engine Position | Front | Front |
| Engine Size | 1910 cc | 1998 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 149 HP | 197 HP |
| Engine RPM | 4000 RPM | 5400 RPM |
| Torque | 315 Nm | 262 Nm |
| Torque RPM | 2000 RPM | 1950 RPM |
| Engine Bore Size | 82 mm | 86.1 mm |
| Engine Stroke Size | 90.4 mm | 86 mm |
| Engine Compression Ratio | 18.0:1 | 8.8:1 |
| Fuel Type | Diesel | Gasoline |
| Acceleration 0-100mph | 10.5 seconds | 7.8 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 | 1613 kg | 1385 kg |
| Vehicle Length | 4640 mm | 4300 mm |
| Vehicle Width | 1800 mm | 1760 mm |
| Vehicle Height | 1470 mm | 1440 mm |
| Wheelbase Size | 2840 mm | 2620 mm |
| Fuel Consumption Overall | 6.1 L/100km | 9.3 L/100km |
| Fuel Tank Capacity | 60 L | 52 L |
