2008 Audi A4 vs. 2003 Opel Signum
To start off, 2008 Audi A4 is newer by 5 year(s). Which means there will be less support and parts availability for 2003 Opel Signum. In addition, the cost of maintenance, including insurance, on 2003 Opel Signum would be higher. At 1,984 cc (4 cylinders), 2008 Audi A4 is equipped with a bigger engine. In terms of performance, 2008 Audi A4 (197 HP @ 5100 RPM) has 72 more horse power than 2003 Opel Signum. (125 HP @ 6000 RPM). In normal driving conditions, 2008 Audi A4 should accelerate faster than 2003 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2008 Audi A4 weights approximately 105 kg more than 2003 Opel Signum. 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 2003 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 Audi A4 (280 Nm @ 1800 RPM) has 113 more torque (in Nm) than 2003 Opel Signum. (167 Nm @ 3800 RPM). This means 2008 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 2003 Opel Signum.
Compare all specifications:
| 2008 Audi A4 | 2003 Opel Signum | |
| Make | Audi | Opel |
| Model | A4 | Signum |
| Year Released | 2008 | 2003 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 1984 cc | 1796 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 197 HP | 125 HP |
| Engine RPM | 5100 RPM | 6000 RPM |
| Torque | 280 Nm | 167 Nm |
| Torque RPM | 1800 RPM | 3800 RPM |
| Engine Bore Size | 82.6 mm | 80.6 mm |
| Engine Stroke Size | 92.8 mm | 88.2 mm |
| Engine Compression Ratio | 10.5:1 | 10.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | 4WD | Front |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1490 kg | 1385 kg |
| Vehicle Length | 4590 mm | 4640 mm |
| Vehicle Width | 1780 mm | 1800 mm |
| Vehicle Height | 1430 mm | 1470 mm |
| Wheelbase Size | 2650 mm | 2500 mm |
| Fuel Consumption Overall | 8.8 L/100km | 7.5 L/100km |
| Fuel Tank Capacity | 63 L | 58 L |
