2009 Audi A8 vs. 2003 Opel Signum
To start off, 2009 Audi A8 is newer by 6 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 5,998 cc, 2009 Audi A8 is equipped with a bigger engine. In terms of performance, 2009 Audi A8 (444 HP @ 6200 RPM) has 269 more horse power than 2003 Opel Signum. (175 HP @ 5500 RPM). In normal driving conditions, 2009 Audi A8 should accelerate faster than 2003 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi A8 weights approximately 420 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 2009 Audi A8 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, 2009 Audi A8 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, 2009 Audi A8 (580 Nm @ 4000 RPM) has 210 more torque (in Nm) than 2003 Opel Signum. (370 Nm @ 1900 RPM). This means 2009 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2003 Opel Signum.
Compare all specifications:
| 2009 Audi A8 | 2003 Opel Signum | |
| Make | Audi | Opel |
| Model | A8 | Signum |
| Year Released | 2009 | 2003 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 5998 cc | 2958 cc |
| Engine Type | W | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 444 HP | 175 HP |
| Engine RPM | 6200 RPM | 5500 RPM |
| Torque | 580 Nm | 370 Nm |
| Torque RPM | 4000 RPM | 1900 RPM |
| Fuel Type | Gasoline - Premium | Diesel |
| Drive Type | 4WD | Front |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1995 kg | 1575 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 |
