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 1,995 cc (4 cylinders), 2004 Opel Signum is equipped with a bigger engine. In terms of performance, 2004 Opel Signum (173 HP @ 5500 RPM) has 2 more horse power than 2005 Audi A4. (171 HP @ 6200 RPM) In normal driving conditions, 2004 Opel Signum should accelerate faster than 2005 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi A4 weights approximately 100 kg more than 2004 Opel Signum.
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, 2004 Opel Signum (265 Nm) has 40 more torque (in Nm) than 2005 Audi A4. (225 Nm). This means 2004 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi A4.
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 | 1786 cc | 1995 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 171 HP | 173 HP |
| Engine RPM | 6200 RPM | 5500 RPM |
| Torque | 225 Nm | 265 Nm |
| Engine Bore Size | 81 mm | 86 mm |
| Engine Stroke Size | 86 mm | 86 mm |
| Engine Compression Ratio | 9.3:1 | 9.5:1 |
| Drive Type | 4WD | Front |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1660 kg | 1560 kg |
| Vehicle Length | 4550 mm | 4640 mm |
| Vehicle Width | 1770 mm | 1800 mm |
| Vehicle Height | 1430 mm | 1470 mm |
| Wheelbase Size | 2770 mm | 2840 mm |
| Fuel Consumption Overall | 10.2 L/100km | 9.4 L/100km |
| Fuel Tank Capacity | 63 L | 60 L |
