2003 Audi A8 vs. 2004 Opel Signum
To start off, 2004 Opel Signum is newer by 1 year(s). Which means there will be less support and parts availability for 2003 Audi A8. In addition, the cost of maintenance, including insurance, on 2003 Audi A8 would be higher. At 2,976 cc (6 cylinders), 2003 Audi A8 is equipped with a bigger engine. In terms of performance, 2003 Audi A8 (217 HP @ 6300 RPM) has 44 more horse power than 2004 Opel Signum. (173 HP @ 5500 RPM). In normal driving conditions, 2003 Audi A8 should accelerate faster than 2004 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2003 Audi A8 weights approximately 295 kg more than 2004 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, 2003 Audi A8 (300 Nm @ 8200 RPM) has 35 more torque (in Nm) than 2004 Opel Signum. (265 Nm @ 2500 RPM). This means 2003 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2004 Opel Signum.
Compare all specifications:
| 2003 Audi A8 | 2004 Opel Signum | |
| Make | Audi | Opel |
| Model | A8 | Signum |
| Year Released | 2003 | 2004 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 2976 cc | 1995 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 217 HP | 173 HP |
| Engine RPM | 6300 RPM | 5500 RPM |
| Torque | 300 Nm | 265 Nm |
| Torque RPM | 8200 RPM | 2500 RPM |
| Engine Bore Size | 82.6 mm | 86 mm |
| Engine Stroke Size | 92.8 mm | 86 mm |
| Engine Compression Ratio | 11.0:1 | 9.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1855 kg | 1560 kg |
| Vehicle Length | 5190 mm | 4640 mm |
| Vehicle Width | 1900 mm | 1800 mm |
| Vehicle Height | 1460 mm | 1470 mm |
| Wheelbase Size | 3080 mm | 2840 mm |
| Fuel Consumption Overall | 9.6 L/100km | 9.4 L/100km |
| Fuel Tank Capacity | 90 L | 60 L |
