2009 Audi A4 vs. 2010 Opel Astra
To start off, 2010 Opel Astra is newer by 1 year(s). Which means there will be less support and parts availability for 2009 Audi A4. In addition, the cost of maintenance, including insurance, on 2009 Audi A4 would be higher. At 1,910 cc (4 cylinders), 2010 Opel Astra is equipped with a bigger engine. In terms of performance, 2009 Audi A4 (158 HP @ 4500 RPM) has 10 more horse power than 2010 Opel Astra. (148 HP @ 4000 RPM). In normal driving conditions, 2009 Audi A4 should accelerate faster than 2010 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi A4 weights approximately 77 kg more than 2010 Opel Astra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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, 2010 Opel Astra (320 Nm @ 2000 RPM) has 70 more torque (in Nm) than 2009 Audi A4. (250 Nm @ 1500 RPM). This means 2010 Opel Astra will have an easier job in driving up hills or pulling heavy equipment than 2009 Audi A4.
Compare all specifications:
| 2009 Audi A4 | 2010 Opel Astra | |
| Make | Audi | Opel |
| Model | A4 | Astra |
| Year Released | 2009 | 2010 |
| Engine Position | Front | Front |
| Engine Size | 1797 cc | 1910 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 158 HP | 148 HP |
| Engine RPM | 4500 RPM | 4000 RPM |
| Torque | 250 Nm | 320 Nm |
| Torque RPM | 1500 RPM | 2000 RPM |
| Engine Bore Size | 82.5 mm | 82 mm |
| Engine Stroke Size | 84.1 mm | 90.4 mm |
| Engine Compression Ratio | 9.6:1 | 17.5:1 |
| Fuel Type | Gasoline - Premium | Diesel |
| Top Speed | 218 km/hour | 210 km/hour |
| Acceleration 0-100mph | 8.9 seconds | 8.9 seconds |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1470 kg | 1393 kg |
| Vehicle Length | 4710 mm | 4300 mm |
| Vehicle Width | 1830 mm | 1760 mm |
| Vehicle Height | 1440 mm | 1440 mm |
| Wheelbase Size | 2810 mm | 2620 mm |
| Fuel Consumption Overall | 7.2 L/100km | 5.8 L/100km |
| Fuel Tank Capacity | 65 L | 52 L |
