2003 Alfa Romeo 156 vs. 2005 Opel Astra
To start off, 2005 Opel Astra is newer by 2 year(s). Which means there will be less support and parts availability for 2003 Alfa Romeo 156. In addition, the cost of maintenance, including insurance, on 2003 Alfa Romeo 156 would be higher. At 1,995 cc (4 cylinders), 2005 Opel Astra is equipped with a bigger engine. In terms of performance, 2003 Alfa Romeo 156 (162 HP @ 6400 RPM) has 14 more horse power than 2005 Opel Astra. (148 HP @ 4000 RPM). In normal driving conditions, 2003 Alfa Romeo 156 should accelerate faster than 2005 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2003 Alfa Romeo 156 weights approximately 85 kg more than 2005 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, 2005 Opel Astra (320 Nm @ 2000 RPM) has 114 more torque (in Nm) than 2003 Alfa Romeo 156. (206 Nm @ 3250 RPM). This means 2005 Opel Astra will have an easier job in driving up hills or pulling heavy equipment than 2003 Alfa Romeo 156.
Compare all specifications:
| 2003 Alfa Romeo 156 | 2005 Opel Astra | |
| Make | Alfa Romeo | Opel |
| Model | 156 | Astra |
| Year Released | 2003 | 2005 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 1968 cc | 1995 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 162 HP | 148 HP |
| Engine RPM | 6400 RPM | 4000 RPM |
| Torque | 206 Nm | 320 Nm |
| Torque RPM | 3250 RPM | 2000 RPM |
| Engine Bore Size | 83 mm | 82.1 mm |
| Engine Stroke Size | 91 mm | 90.4 mm |
| Engine Compression Ratio | 11.3:1 | 17.5:1 |
| Acceleration 0-100mph | 8.2 seconds | 8.9 seconds |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 3 doors |
| Vehicle Weight | 1285 kg | 1200 kg |
| Vehicle Length | 4440 mm | 4300 mm |
| Vehicle Width | 1750 mm | 1800 mm |
| Vehicle Height | 1440 mm | 1440 mm |
| Wheelbase Size | 2550 mm | 2400 mm |
| Fuel Consumption Highway | 6.6 L/100km | 4.9 L/100km |
| Fuel Consumption City | 12.2 L/100km | 7.4 L/100km |
| Fuel Consumption Overall | 8.6 L/100km | 5.8 L/100km |
| Fuel Tank Capacity | 63 L | 52 L |
