2003 Audi A4 vs. 2005 Opel Vectra
To start off, 2005 Opel Vectra is newer by 2 year(s). Which means there will be less support and parts availability for 2003 Audi A4. In addition, the cost of maintenance, including insurance, on 2003 Audi A4 would be higher. At 4,163 cc (8 cylinders), 2003 Audi A4 is equipped with a bigger engine. In terms of performance, 2003 Audi A4 (341 HP @ 7000 RPM) has 218 more horse power than 2005 Opel Vectra. (123 HP @ 5600 RPM). In normal driving conditions, 2003 Audi A4 should accelerate faster than 2005 Opel Vectra. With that said, vehicle weight also plays an important factor in acceleration. 2003 Audi A4 weights approximately 300 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.
Because 2003 Audi A4 is four wheel drive (4WD), it will have significant more traction and grip than 2005 Opel Vectra. In wet, icy, snow, or gravel driving conditions, 2003 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, 2003 Audi A4 (410 Nm @ 3500 RPM) has 245 more torque (in Nm) than 2005 Opel Vectra. (165 Nm @ 3800 RPM). This means 2003 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 2005 Opel Vectra. 2005 Opel Vectra has automatic transmission and 2003 Audi A4 has manual transmission. 2003 Audi A4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2005 Opel Vectra will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2003 Audi A4 | 2005 Opel Vectra | |
| Make | Audi | Opel |
| Model | A4 | Vectra |
| Year Released | 2003 | 2005 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 1794 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 341 HP | 123 HP |
| Engine RPM | 7000 RPM | 5600 RPM |
| Torque | 410 Nm | 165 Nm |
| Torque RPM | 3500 RPM | 3800 RPM |
| Engine Bore Size | 84.5 mm | 80.5 mm |
| Engine Stroke Size | 92.8 mm | 88.2 mm |
| Engine Compression Ratio | 11.0:1 | 10.5:1 |
| Drive Type | 4WD | Front |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1660 kg | 1360 kg |
| Vehicle Length | 4550 mm | 4500 mm |
| Vehicle Width | 1770 mm | 1710 mm |
| Vehicle Height | 1430 mm | 1430 mm |
| Wheelbase Size | 2660 mm | 2640 mm |
| Fuel Tank Capacity | 66 L | 60 L |
