2006 Audi A4 vs. 2007 Opel Astra
To start off, 2007 Opel Astra is newer by 1 year(s). Which means there will be less support and parts availability for 2006 Audi A4. In addition, the cost of maintenance, including insurance, on 2006 Audi A4 would be higher. At 1,998 cc (4 cylinders), 2007 Opel Astra is equipped with a bigger engine. In terms of performance, 2007 Opel Astra (197 HP @ 5400 RPM) has 59 more horse power than 2006 Audi A4. (138 HP @ 4000 RPM) In normal driving conditions, 2007 Opel Astra should accelerate faster than 2006 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2006 Audi A4 weights approximately 145 kg more than 2007 Opel Astra.
Both vehicles are front wheel drive (FWD). Which offers better traction when its slippery than rear wheel drive vehicles. 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, 2006 Audi A4 (320 Nm @ 1750 RPM) has 58 more torque (in Nm) than 2007 Opel Astra. (262 Nm @ 1950 RPM). This means 2006 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 2007 Opel Astra.
Compare all specifications:
| 2006 Audi A4 | 2007 Opel Astra | |
| Make | Audi | Opel |
| Model | A4 | Astra |
| Year Released | 2006 | 2007 |
| Engine Position | Front | Front |
| Engine Size | 1968 cc | 1998 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 138 HP | 197 HP |
| Engine RPM | 4000 RPM | 5400 RPM |
| Torque | 320 Nm | 262 Nm |
| Torque RPM | 1750 RPM | 1950 RPM |
| Engine Bore Size | 81 mm | 86.1 mm |
| Engine Stroke Size | 95.5 mm | 86 mm |
| Engine Compression Ratio | 18.0:1 | 8.8:1 |
| Fuel Type | Diesel | Gasoline |
| Acceleration 0-100mph | 9.7 seconds | 7.8 seconds |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1530 kg | 1385 kg |
| Vehicle Length | 4550 mm | 4300 mm |
| Vehicle Width | 1780 mm | 1760 mm |
| Vehicle Height | 1430 mm | 1440 mm |
| Wheelbase Size | 2660 mm | 2620 mm |
| Fuel Consumption Overall | 5.7 L/100km | 9.3 L/100km |
| Fuel Tank Capacity | 70 L | 52 L |
