2004 Audi A6 vs. 2006 Opel Astra
To start off, 2006 Opel Astra is newer by 2 year(s). Which means there will be less support and parts availability for 2004 Audi A6. In addition, the cost of maintenance, including insurance, on 2004 Audi A6 would be higher. At 4,172 cc (8 cylinders), 2004 Audi A6 is equipped with a bigger engine. In terms of performance, 2004 Audi A6 (296 HP @ 6200 RPM) has 148 more horse power than 2006 Opel Astra. (148 HP @ 4000 RPM). In normal driving conditions, 2004 Audi A6 should accelerate faster than 2006 Opel Astra.
Because 2004 Audi A6 is four wheel drive (4WD), it will have significant more traction and grip than 2006 Opel Astra. In wet, icy, snow, or gravel driving conditions, 2004 Audi A6 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, 2004 Audi A6 (400 Nm @ 3000 RPM) has 80 more torque (in Nm) than 2006 Opel Astra. (320 Nm @ 2000 RPM). This means 2004 Audi A6 will have an easier job in driving up hills or pulling heavy equipment than 2006 Opel Astra.
Compare all specifications:
| 2004 Audi A6 | 2006 Opel Astra | |
| Make | Audi | Opel |
| Model | A6 | Astra |
| Year Released | 2004 | 2006 |
| Engine Position | Front | Front |
| Engine Size | 4172 cc | 1910 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 296 HP | 148 HP |
| Engine RPM | 6200 RPM | 4000 RPM |
| Torque | 400 Nm | 320 Nm |
| Torque RPM | 3000 RPM | 2000 RPM |
| Engine Bore Size | 84.5 mm | 83 mm |
| Engine Stroke Size | 93 mm | 92 mm |
| Engine Compression Ratio | 11.0:1 | 17.5:1 |
| Fuel Type | Gasoline - Premium | Diesel |
| Drive Type | 4WD | Front |
| Number of Seats | 5 seats | 4 seats |
| Vehicle Width | 1860 mm | 1760 mm |
