2005 Audi A8 vs. 2003 Opel Vectra
To start off, 2005 Audi A8 is newer by 2 year(s). Which means there will be less support and parts availability for 2003 Opel Vectra. In addition, the cost of maintenance, including insurance, on 2003 Opel Vectra would be higher. At 5,998 cc, 2005 Audi A8 is equipped with a bigger engine. In terms of performance, 2005 Audi A8 (444 HP @ 6500 RPM) has 319 more horse power than 2003 Opel Vectra. (125 HP @ 6000 RPM). In normal driving conditions, 2005 Audi A8 should accelerate faster than 2003 Opel Vectra.
Because 2005 Audi A8 is four wheel drive (4WD), it will have significant more traction and grip than 2003 Opel Vectra. In wet, icy, snow, or gravel driving conditions, 2005 Audi A8 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, 2005 Audi A8 (560 Nm @ 4000 RPM) has 390 more torque (in Nm) than 2003 Opel Vectra. (170 Nm @ 3800 RPM). This means 2005 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2003 Opel Vectra. 2005 Audi A8 has automatic transmission and 2003 Opel Vectra has manual transmission. 2003 Opel Vectra will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2005 Audi A8 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2005 Audi A8 | 2003 Opel Vectra | |
| Make | Audi | Opel |
| Model | A8 | Vectra |
| Year Released | 2005 | 2003 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 5998 cc | 1796 cc |
| Engine Type | W | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 444 HP | 125 HP |
| Engine RPM | 6500 RPM | 6000 RPM |
| Torque | 560 Nm | 170 Nm |
| Torque RPM | 4000 RPM | 3800 RPM |
| Engine Compression Ratio | 11.0:1 | 10.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | 4WD | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Length | 5190 mm | 4600 mm |
| Vehicle Width | 1900 mm | 1800 mm |
| Vehicle Height | 1460 mm | 1470 mm |
| Wheelbase Size | 3080 mm | 2710 mm |
| Fuel Tank Capacity | 90 L | 61 L |
