2005 Audi A4 vs. 2001 Opel Signum
To start off, 2005 Audi A4 is newer by 4 year(s). Which means there will be less support and parts availability for 2001 Opel Signum. In addition, the cost of maintenance, including insurance, on 2001 Opel Signum would be higher. At 1,994 cc (4 cylinders), 2001 Opel Signum is equipped with a bigger engine. In terms of performance, 2001 Opel Signum (144 HP @ 4000 RPM) has 6 more horse power than 2005 Audi A4. (138 HP @ 4000 RPM) In normal driving conditions, 2001 Opel Signum should accelerate faster than 2005 Audi A4.
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, 2005 Audi A4 (320 Nm @ 1750 RPM) has 100 more torque (in Nm) than 2001 Opel Signum. (220 Nm @ 2000 RPM). This means 2005 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 2001 Opel Signum.
Compare all specifications:
| 2005 Audi A4 | 2001 Opel Signum | |
| Make | Audi | Opel |
| Model | A4 | Signum |
| Year Released | 2005 | 2001 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 1984 cc | 1994 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 138 HP | 144 HP |
| Engine RPM | 4000 RPM | 4000 RPM |
| Torque | 320 Nm | 220 Nm |
| Torque RPM | 1750 RPM | 2000 RPM |
| Engine Bore Size | 81 mm | 82 mm |
| Engine Stroke Size | 95.5 mm | 90.4 mm |
| Engine Compression Ratio | 18.0:1 | 18.0:1 |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Length | 4550 mm | 4640 mm |
| Vehicle Width | 1780 mm | 1800 mm |
| Vehicle Height | 1430 mm | 1470 mm |
| Wheelbase Size | 2660 mm | 2850 mm |
| Fuel Tank Capacity | 66 L | 60 L |
