2005 Alfa Romeo 156 vs. 2004 Opel Astra
To start off, 2005 Alfa Romeo 156 is newer by 1 year(s). Which means there will be less support and parts availability for 2004 Opel Astra. In addition, the cost of maintenance, including insurance, on 2004 Opel Astra would be higher. At 3,179 cc (6 cylinders), 2005 Alfa Romeo 156 is equipped with a bigger engine. In terms of performance, 2005 Alfa Romeo 156 (247 HP @ 6200 RPM) has 144 more horse power than 2004 Opel Astra. (103 HP @ 4400 RPM). In normal driving conditions, 2005 Alfa Romeo 156 should accelerate faster than 2004 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2004 Opel Astra weights approximately 5 kg more than 2005 Alfa Romeo 156.
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 (305 Nm @ 4800 RPM) has 74 more torque (in Nm) than 2004 Opel Astra. (231 Nm @ 2300 RPM). This means 2005 Alfa Romeo 156 will have an easier job in driving up hills or pulling heavy equipment than 2004 Opel Astra.
Compare all specifications:
| 2005 Alfa Romeo 156 | 2004 Opel Astra | |
| Make | Alfa Romeo | Opel |
| Model | 156 | Astra |
| Year Released | 2005 | 2004 |
| Body Type | Sedan | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 3179 cc | 1686 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 247 HP | 103 HP |
| Engine RPM | 6200 RPM | 4400 RPM |
| Torque | 305 Nm | 231 Nm |
| Torque RPM | 4800 RPM | 2300 RPM |
| Engine Bore Size | 93 mm | 79 mm |
| Engine Stroke Size | 78 mm | 86 mm |
| Top Speed | 250 km/hour | 180 km/hour |
| Acceleration 0-100mph | 6.3 seconds | 12.5 seconds |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1410 kg | 1415 kg |
| Vehicle Length | 4440 mm | 4520 mm |
| Vehicle Width | 1770 mm | 1800 mm |
| Vehicle Height | 1410 mm | 1510 mm |
| Wheelbase Size | 2600 mm | 2840 mm |
| Fuel Consumption Overall | 12.3 L/100km | 4.9 L/100km |
| Fuel Tank Capacity | 63 L | 50 L |
