2009 Audi A8 vs. 2004 Opel Signum
To start off, 2009 Audi A8 is newer by 5 year(s). Which means there will be less support and parts availability for 2004 Opel Signum. In addition, the cost of maintenance, including insurance, on 2004 Opel Signum would be higher. At 3,696 cc (8 cylinders), 2009 Audi A8 is equipped with a bigger engine. In terms of performance, 2009 Audi A8 (276 HP @ 6000 RPM) has 103 more horse power than 2004 Opel Signum. (173 HP @ 5500 RPM). In normal driving conditions, 2009 Audi A8 should accelerate faster than 2004 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi A8 weights approximately 210 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.
Because 2009 Audi A8 is four wheel drive (4WD), it will have significant more traction and grip than 2004 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 (360 Nm @ 3750 RPM) has 95 more torque (in Nm) than 2004 Opel Signum. (265 Nm @ 2500 RPM). This means 2009 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2004 Opel Signum. 2009 Audi A8 has automatic transmission and 2004 Opel Signum has manual transmission. 2004 Opel Signum will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 Audi A8 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 Audi A8 | 2004 Opel Signum | |
| Make | Audi | Opel |
| Model | A8 | Signum |
| Year Released | 2009 | 2004 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 3696 cc | 1995 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 276 HP | 173 HP |
| Engine RPM | 6000 RPM | 5500 RPM |
| Torque | 360 Nm | 265 Nm |
| Torque RPM | 3750 RPM | 2500 RPM |
| Engine Bore Size | 84.5 mm | 86 mm |
| Engine Stroke Size | 82.4 mm | 86 mm |
| Engine Compression Ratio | 11.0:1 | 9.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 250 km/hour | 220 km/hour |
| Drive Type | 4WD | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1770 kg | 1560 kg |
| Vehicle Length | 5060 mm | 4640 mm |
| Vehicle Width | 1900 mm | 1800 mm |
| Vehicle Height | 1450 mm | 1470 mm |
| Wheelbase Size | 2950 mm | 2840 mm |
| Fuel Consumption Overall | 11.7 L/100km | 9.4 L/100km |
| Fuel Tank Capacity | 90 L | 60 L |
