2007 Audi A4 vs. 2008 Opel Signum
To start off, 2008 Opel Signum is newer by 1 year(s). Which means there will be less support and parts availability for 2007 Audi A4. In addition, the cost of maintenance, including insurance, on 2007 Audi A4 would be higher. At 3,123 cc (6 cylinders), 2007 Audi A4 is equipped with a bigger engine. In terms of performance, 2007 Audi A4 (255 HP @ 6500 RPM) has 102 more horse power than 2008 Opel Signum. (153 HP @ 5600 RPM). In normal driving conditions, 2007 Audi A4 should accelerate faster than 2008 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2007 Audi A4 weights approximately 345 kg more than 2008 Opel Signum. 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, 2007 Audi A4 (330 Nm @ 3250 RPM) has 110 more torque (in Nm) than 2008 Opel Signum. (220 Nm @ 3800 RPM). This means 2007 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 2008 Opel Signum.
Compare all specifications:
| 2007 Audi A4 | 2008 Opel Signum | |
| Make | Audi | Opel |
| Model | A4 | Signum |
| Year Released | 2007 | 2008 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 3123 cc | 2197 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 255 HP | 153 HP |
| Engine RPM | 6500 RPM | 5600 RPM |
| Torque | 330 Nm | 220 Nm |
| Torque RPM | 3250 RPM | 3800 RPM |
| Engine Bore Size | 84 mm | 86 mm |
| Engine Stroke Size | 96 mm | 94.6 mm |
| Engine Compression Ratio | 11.3:1 | 12.0:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 250 km/hour | 211 km/hour |
| Drive Type | Front | Front |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1880 kg | 1535 kg |
| Vehicle Length | 4590 mm | 4640 mm |
| Vehicle Width | 1780 mm | 1800 mm |
| Vehicle Height | 1430 mm | 1470 mm |
| Wheelbase Size | 2660 mm | 2840 mm |
| Fuel Consumption Highway | 8.3 L/100km | 7.2 L/100km |
| Fuel Consumption City | 11.4 L/100km | 12.4 L/100km |
| Fuel Consumption Overall | 10 L/100km | 8.1 L/100km |
| Fuel Tank Capacity | 70 L | 60 L |
