2005 Audi A8 vs. 2004 Opel Vectra
To start off, 2005 Audi A8 is newer by 1 year(s). Which means there will be less support and parts availability for 2004 Opel Vectra. In addition, the cost of maintenance, including insurance, on 2004 Opel Vectra would be higher. At 4,178 cc (8 cylinders), 2005 Audi A8 is equipped with a bigger engine. In terms of performance, 2005 Audi A8 (335 HP @ 4000 RPM) has 186 more horse power than 2004 Opel Vectra. (149 HP @ 4000 RPM). In normal driving conditions, 2005 Audi A8 should accelerate faster than 2004 Opel Vectra. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi A8 weights approximately 332 kg more than 2004 Opel Vectra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2005 Audi A8 (430 Nm) has 60 more torque (in Nm) than 2004 Opel Vectra. (370 Nm). This means 2005 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2004 Opel Vectra.
Compare all specifications:
| 2005 Audi A8 | 2004 Opel Vectra | |
| Make | Audi | Opel |
| Model | A8 | Vectra |
| Year Released | 2005 | 2004 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4178 cc | 2958 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 335 HP | 149 HP |
| Engine RPM | 4000 RPM | 4000 RPM |
| Torque | 430 Nm | 370 Nm |
| Engine Bore Size | 85 mm | 87.5 mm |
| Engine Stroke Size | 93 mm | 82 mm |
| Engine Compression Ratio | 11.0:1 | 18.5:1 |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1945 kg | 1613 kg |
| Vehicle Length | 5060 mm | 4600 mm |
| Vehicle Width | 1900 mm | 1800 mm |
| Vehicle Height | 1450 mm | 1470 mm |
| Wheelbase Size | 2950 mm | 2840 mm |
| Fuel Consumption Highway | 9.8 L/100km | 5.4 L/100km |
| Fuel Consumption City | 13.1 L/100km | 9.8 L/100km |
| Fuel Consumption Overall | 11.8 L/100km | 7.1 L/100km |
| Fuel Tank Capacity | 90 L | 61 L |
