2005 Audi A4 vs. 2004 Opel Signum
To start off, 2005 Audi A4 is newer by 1 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 2,392 cc (6 cylinders), 2005 Audi A4 is equipped with a bigger engine. In terms of performance, 2005 Audi A4 (178 HP @ 4000 RPM) has 5 more horse power than 2004 Opel Signum. (173 HP @ 5500 RPM). In normal driving conditions, 2005 Audi A4 should accelerate faster than 2004 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi A4 weights approximately 30 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 2005 Audi A4 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, 2005 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, 2005 Audi A4 (370 Nm @ 1500 RPM) has 105 more torque (in Nm) than 2004 Opel Signum. (265 Nm @ 2500 RPM). This means 2005 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 2004 Opel Signum.
Compare all specifications:
| 2005 Audi A4 | 2004 Opel Signum | |
| Make | Audi | Opel |
| Model | A4 | Signum |
| Year Released | 2005 | 2004 |
| Body Type | Station Wagon | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 2392 cc | 1995 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 178 HP | 173 HP |
| Engine RPM | 4000 RPM | 5500 RPM |
| Torque | 370 Nm | 265 Nm |
| Torque RPM | 1500 RPM | 2500 RPM |
| Engine Bore Size | 78.3 mm | 86 mm |
| Engine Stroke Size | 86.4 mm | 86 mm |
| Engine Compression Ratio | 19.0:1 | 9.5:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Top Speed | 223 km/hour | 220 km/hour |
| Drive Type | 4WD | Front |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1590 kg | 1560 kg |
| Vehicle Length | 4550 mm | 4640 mm |
| Vehicle Width | 1780 mm | 1800 mm |
| Vehicle Height | 1430 mm | 1470 mm |
| Wheelbase Size | 2770 mm | 2840 mm |
| Fuel Consumption Overall | 7.6 L/100km | 9.4 L/100km |
| Fuel Tank Capacity | 66 L | 60 L |
