2002 Audi A4 vs. 2005 Opel Vectra
To start off, 2005 Opel Vectra is newer by 3 year(s). Which means there will be less support and parts availability for 2002 Audi A4. In addition, the cost of maintenance, including insurance, on 2002 Audi A4 would be higher. At 1,794 cc (4 cylinders), 2005 Opel Vectra is equipped with a bigger engine. In terms of performance, 2002 Audi A4 (184 HP @ 5700 RPM) has 61 more horse power than 2005 Opel Vectra. (123 HP @ 5600 RPM). In normal driving conditions, 2002 Audi A4 should accelerate faster than 2005 Opel Vectra. With that said, vehicle weight also plays an important factor in acceleration. 2002 Audi A4 weights approximately 70 kg more than 2005 Opel Vectra. 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, 2002 Audi A4 (240 Nm @ 1950 RPM) has 75 more torque (in Nm) than 2005 Opel Vectra. (165 Nm @ 3800 RPM). This means 2002 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 2005 Opel Vectra.
Compare all specifications:
| 2002 Audi A4 | 2005 Opel Vectra | |
| Make | Audi | Opel |
| Model | A4 | Vectra |
| Year Released | 2002 | 2005 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1781 cc | 1794 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 184 HP | 123 HP |
| Engine RPM | 5700 RPM | 5600 RPM |
| Torque | 240 Nm | 165 Nm |
| Torque RPM | 1950 RPM | 3800 RPM |
| Engine Compression Ratio | 9.3:1 | 10.5:1 |
| Top Speed | 223 km/hour | 200 km/hour |
| Acceleration 0-100mph | 7.8 seconds | 12 seconds |
| Drive Type | Front | Front |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1430 kg | 1360 kg |
| Vehicle Length | 4550 mm | 4500 mm |
| Vehicle Width | 1780 mm | 1710 mm |
| Vehicle Height | 1430 mm | 1430 mm |
| Wheelbase Size | 2660 mm | 2640 mm |
| Fuel Tank Capacity | 70 L | 60 L |
