2008 Audi A4 vs. 2008 Opel Signum
To start off, both 2008 Audi A4 and 2008 Opel Signum were released in the same year (2008). Therefore the support and the availability on parts for both vehicles should be relatively similar. At 3,175 cc (6 cylinders), 2008 Opel Signum is equipped with a bigger engine. In terms of performance, 2008 Opel Signum (208 HP @ 6200 RPM) has 21 more horse power than 2008 Audi A4. (187 HP @ 5700 RPM) In normal driving conditions, 2008 Opel Signum should accelerate faster than 2008 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2008 Opel Signum weights approximately 80 kg more than 2008 Audi A4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2008 Audi A4 is four wheel drive (4WD), it will have significant more traction and grip than 2008 Opel Signum. In wet, icy, snow, or gravel driving conditions, 2008 Audi A4 will offer significantly more control. 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 (300 Nm @ 4000 RPM) has 60 more torque (in Nm) than 2008 Audi A4. (240 Nm @ 1950 RPM). This means 2008 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2008 Audi A4.
Compare all specifications:
| 2008 Audi A4 | 2008 Opel Signum | |
| Make | Audi | Opel |
| Model | A4 | Signum |
| Year Released | 2008 | 2008 |
| Body Type | Station Wagon | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 1779 cc | 3175 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 187 HP | 208 HP |
| Engine RPM | 5700 RPM | 6200 RPM |
| Torque | 240 Nm | 300 Nm |
| Torque RPM | 1950 RPM | 4000 RPM |
| Engine Bore Size | 81 mm | 87.5 mm |
| Engine Stroke Size | 86.4 mm | 88 mm |
| Engine Compression Ratio | 9.0:1 | 10.0:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 230 km/hour | 237 km/hour |
| Acceleration 0-100mph | 8.5 seconds | 7.9 seconds |
| Drive Type | 4WD | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1530 kg | 1610 kg |
| Vehicle Length | 4550 mm | 4640 mm |
| Vehicle Width | 1780 mm | 1800 mm |
| Vehicle Height | 1430 mm | 1470 mm |
| Wheelbase Size | 2660 mm | 2840 mm |
| Fuel Consumption Overall | 9.4 L/100km | 10.1 L/100km |
| Fuel Tank Capacity | 66 L | 60 L |
