2005 Alfa Romeo 156 vs. 2007 Opel Astra
To start off, 2007 Opel Astra is newer by 2 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 2,492 cc (6 cylinders), 2005 Alfa Romeo 156 is equipped with a bigger engine. In terms of performance, 2005 Alfa Romeo 156 (185 HP @ 5000 RPM) has 17 more horse power than 2007 Opel Astra. (168 HP @ 5200 RPM). In normal driving conditions, 2005 Alfa Romeo 156 should accelerate faster than 2007 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2005 Alfa Romeo 156 weights approximately 65 kg more than 2007 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, 2007 Opel Astra (250 Nm @ 1950 RPM) has 28 more torque (in Nm) than 2005 Alfa Romeo 156. (222 Nm @ 5000 RPM). This means 2007 Opel Astra will have an easier job in driving up hills or pulling heavy equipment than 2005 Alfa Romeo 156.
Compare all specifications:
| 2005 Alfa Romeo 156 | 2007 Opel Astra | |
| Make | Alfa Romeo | Opel |
| Model | 156 | Astra |
| Year Released | 2005 | 2007 |
| Body Type | Station Wagon | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 2492 cc | 1998 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 185 HP | 168 HP |
| Engine RPM | 5000 RPM | 5200 RPM |
| Torque | 222 Nm | 250 Nm |
| Torque RPM | 5000 RPM | 1950 RPM |
| Engine Bore Size | 88 mm | 86.1 mm |
| Engine Stroke Size | 68.3 mm | 86 mm |
| Acceleration 0-100mph | 8.4 seconds | 8.9 seconds |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1490 kg | 1425 kg |
| Vehicle Length | 4450 mm | 4520 mm |
| Vehicle Width | 1750 mm | 1800 mm |
| Vehicle Height | 1440 mm | 1510 mm |
| Wheelbase Size | 2710 mm | 2710 mm |
| Fuel Consumption Overall | 11.8 L/100km | 9.1 L/100km |
| Fuel Tank Capacity | 72 L | 52 L |
