1999 Audi A4 vs. 2006 Opel Signum
To start off, 2006 Opel Signum is newer by 7 year(s). Which means there will be less support and parts availability for 1999 Audi A4. In addition, the cost of maintenance, including insurance, on 1999 Audi A4 would be higher. At 1,998 cc (4 cylinders), 2006 Opel Signum is equipped with a bigger engine. In terms of performance, 2006 Opel Signum (173 HP @ 5500 RPM) has 50 more horse power than 1999 Audi A4. (123 HP @ 5800 RPM) In normal driving conditions, 2006 Opel Signum should accelerate faster than 1999 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2006 Opel Signum weights approximately 330 kg more than 1999 Audi A4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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, 2006 Opel Signum (266 Nm @ 2500 RPM) has 93 more torque (in Nm) than 1999 Audi A4. (173 Nm @ 3950 RPM). This means 2006 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 1999 Audi A4.
Compare all specifications:
| 1999 Audi A4 | 2006 Opel Signum | |
| Make | Audi | Opel |
| Model | A4 | Signum |
| Year Released | 1999 | 2006 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 1781 cc | 1998 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 123 HP | 173 HP |
| Engine RPM | 5800 RPM | 5500 RPM |
| Torque | 173 Nm | 266 Nm |
| Torque RPM | 3950 RPM | 2500 RPM |
| Engine Bore Size | 81 mm | 86 mm |
| Engine Stroke Size | 86.4 mm | 86 mm |
| Fuel Type | Gasoline | Gasoline - Premium |
| Top Speed | 205 km/hour | 220 km/hour |
| Acceleration 0-100mph | 12.3 seconds | 9.4 seconds |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1230 kg | 1560 kg |
| Vehicle Length | 4480 mm | 4640 mm |
| Vehicle Width | 1740 mm | 1800 mm |
| Vehicle Height | 1420 mm | 1470 mm |
| Wheelbase Size | 2520 mm | 2840 mm |
| Fuel Consumption Overall | 13 L/100km | 9.2 L/100km |
| Fuel Tank Capacity | 60 L | 60 L |
