2005 Audi S4 vs. 2003 Opel Signum
To start off, 2005 Audi S4 is newer by 2 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 4,163 cc (8 cylinders), 2005 Audi S4 is equipped with a bigger engine. In terms of performance, 2005 Audi S4 (340 HP @ 6200 RPM) has 225 more horse power than 2003 Opel Signum. (115 HP @ 3000 RPM). In normal driving conditions, 2005 Audi S4 should accelerate faster than 2003 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi S4 weights approximately 247 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.
Let's talk about torque, 2005 Audi S4 (410 Nm) has 130 more torque (in Nm) than 2003 Opel Signum. (280 Nm). This means 2005 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 2003 Opel Signum.
Compare all specifications:
| 2005 Audi S4 | 2003 Opel Signum | |
| Make | Audi | Opel |
| Model | S4 | Signum |
| Year Released | 2005 | 2003 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 2172 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 340 HP | 115 HP |
| Engine RPM | 6200 RPM | 3000 RPM |
| Torque | 410 Nm | 280 Nm |
| Engine Bore Size | 85 mm | 84.1 mm |
| Engine Stroke Size | 93 mm | 98 mm |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1782 kg | 1535 kg |
| Vehicle Length | 4550 mm | 4640 mm |
| Vehicle Width | 1770 mm | 1800 mm |
| Vehicle Height | 1430 mm | 1470 mm |
| Wheelbase Size | 2760 mm | 2840 mm |
