2007 Audi A4 vs. 2005 Opel Astra
To start off, 2007 Audi A4 is newer by 2 year(s). Which means there will be less support and parts availability for 2005 Opel Astra. In addition, the cost of maintenance, including insurance, on 2005 Opel Astra would be higher. At 3,123 cc (6 cylinders), 2007 Audi A4 is equipped with a bigger engine. In terms of performance, 2007 Audi A4 (255 HP @ 6500 RPM) has 132 more horse power than 2005 Opel Astra. (123 HP @ 5600 RPM). In normal driving conditions, 2007 Audi A4 should accelerate faster than 2005 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2007 Audi A4 weights approximately 32 kg more than 2005 Opel Astra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2007 Audi A4 is four wheel drive (4WD), it will have significant more traction and grip than 2005 Opel Astra. In wet, icy, snow, or gravel driving conditions, 2007 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, 2007 Audi A4 (330 Nm @ 3250 RPM) has 160 more torque (in Nm) than 2005 Opel Astra. (170 Nm @ 3800 RPM). This means 2007 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 2005 Opel Astra.
Compare all specifications:
| 2007 Audi A4 | 2005 Opel Astra | |
| Make | Audi | Opel |
| Model | A4 | Astra |
| Year Released | 2007 | 2005 |
| Body Type | Convertible | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 3123 cc | 1796 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 255 HP | 123 HP |
| Engine RPM | 6500 RPM | 5600 RPM |
| Torque | 330 Nm | 170 Nm |
| Torque RPM | 3250 RPM | 3800 RPM |
| Engine Bore Size | 84.1 mm | 80.6 mm |
| Engine Stroke Size | 96 mm | 88.2 mm |
| Engine Compression Ratio | 11.3:1 | 10.5:1 |
| Drive Type | 4WD | Front |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 3 doors |
| Vehicle Weight | 1310 kg | 1278 kg |
| Vehicle Length | 4580 mm | 4300 mm |
| Vehicle Width | 1780 mm | 1760 mm |
| Vehicle Height | 1400 mm | 1440 mm |
| Wheelbase Size | 2660 mm | 2710 mm |
| Fuel Consumption Highway | 8.7 L/100km | 6.2 L/100km |
| Fuel Consumption City | 12.4 L/100km | 11.3 L/100km |
| Fuel Consumption Overall | 10.7 L/100km | 8.1 L/100km |
| Fuel Tank Capacity | 63 L | 52 L |
