2005 Alfa Romeo 156 vs. 2009 Opel Astra
To start off, 2009 Opel Astra is newer by 4 year(s). Which means there will be less support and parts availability for 2005 Alfa Romeo 156. In addition, the cost of maintenance, including insurance, on 2005 Alfa Romeo 156 would be higher. At 1,998 cc (4 cylinders), 2009 Opel Astra is equipped with a bigger engine. In terms of performance, 2009 Opel Astra (197 HP @ 5400 RPM) has 59 more horse power than 2005 Alfa Romeo 156. (138 HP @ 4000 RPM) In normal driving conditions, 2009 Opel Astra should accelerate faster than 2005 Alfa Romeo 156. With that said, vehicle weight also plays an important factor in acceleration. 2009 Opel Astra weights approximately 210 kg more than 2005 Alfa Romeo 156. 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, 2005 Alfa Romeo 156 (310 Nm @ 2000 RPM) has 48 more torque (in Nm) than 2009 Opel Astra. (262 Nm @ 1950 RPM). This means 2005 Alfa Romeo 156 will have an easier job in driving up hills or pulling heavy equipment than 2009 Opel Astra.
Compare all specifications:
| 2005 Alfa Romeo 156 | 2009 Opel Astra | |
| Make | Alfa Romeo | Opel |
| Model | 156 | Astra |
| Year Released | 2005 | 2009 |
| Engine Position | Front | Front |
| Engine Size | 1970 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 | 310 Nm | 262 Nm |
| Torque RPM | 2000 RPM | 1950 RPM |
| Engine Compression Ratio | 18.4:1 | 8.8:1 |
| Fuel Type | Diesel | Gasoline |
| Top Speed | 209 km/hour | 234 km/hour |
| Acceleration 0-100mph | 9.7 seconds | 8.1 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 | 1415 kg | 1625 kg |
| Vehicle Length | 4440 mm | 4300 mm |
| Vehicle Width | 1750 mm | 1760 mm |
| Vehicle Height | 1400 mm | 1440 mm |
| Wheelbase Size | 2600 mm | 2620 mm |
| Fuel Consumption Overall | 6 L/100km | 9.3 L/100km |
| Fuel Tank Capacity | 63 L | 52 L |
