2004 Alfa Romeo 156 vs. 2005 Opel Astra
To start off, 2005 Opel Astra is newer by 1 year(s). Which means there will be less support and parts availability for 2004 Alfa Romeo 156. In addition, the cost of maintenance, including insurance, on 2004 Alfa Romeo 156 would be higher. At 1,910 cc (4 cylinders), 2005 Opel Astra is equipped with a bigger engine. In terms of performance, 2005 Opel Astra (148 HP @ 4000 RPM) has 10 more horse power than 2004 Alfa Romeo 156. (138 HP @ 6500 RPM) In normal driving conditions, 2005 Opel Astra should accelerate faster than 2004 Alfa Romeo 156. With that said, vehicle weight also plays an important factor in acceleration. 2004 Alfa Romeo 156 weights approximately 110 kg more than 2005 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, 2005 Opel Astra (316 Nm @ 2000 RPM) has 153 more torque (in Nm) than 2004 Alfa Romeo 156. (163 Nm @ 3900 RPM). This means 2005 Opel Astra will have an easier job in driving up hills or pulling heavy equipment than 2004 Alfa Romeo 156.
Compare all specifications:
| 2004 Alfa Romeo 156 | 2005 Opel Astra | |
| Make | Alfa Romeo | Opel |
| Model | 156 | Astra |
| Year Released | 2004 | 2005 |
| Body Type | Station Wagon | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 1747 cc | 1910 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 138 HP | 148 HP |
| Engine RPM | 6500 RPM | 4000 RPM |
| Torque | 163 Nm | 316 Nm |
| Torque RPM | 3900 RPM | 2000 RPM |
| Engine Bore Size | 82.1 mm | 82 mm |
| Engine Stroke Size | 82.7 mm | 90.4 mm |
| Fuel Type | Gasoline - Premium | Diesel |
| Acceleration 0-100mph | 9.7 seconds | 9.2 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 | 1390 kg | 1280 kg |
| Vehicle Length | 4450 mm | 4520 mm |
| Vehicle Width | 1750 mm | 1760 mm |
| Vehicle Height | 1400 mm | 1510 mm |
| Wheelbase Size | 2600 mm | 2710 mm |
| Fuel Consumption Overall | 8.6 L/100km | 6.1 L/100km |
| Fuel Tank Capacity | 63 L | 52 L |
