2005 Alfa Romeo 156 vs. 2001 Opel Vectra
To start off, 2005 Alfa Romeo 156 is newer by 4 year(s). Which means there will be less support and parts availability for 2001 Opel Vectra. In addition, the cost of maintenance, including insurance, on 2001 Opel Vectra would be higher. At 2,196 cc (4 cylinders), 2001 Opel Vectra is equipped with a bigger engine. In terms of performance, 2005 Alfa Romeo 156 (173 HP @ 4000 RPM) has 31 more horse power than 2001 Opel Vectra. (142 HP @ 5600 RPM). In normal driving conditions, 2005 Alfa Romeo 156 should accelerate faster than 2001 Opel Vectra. With that said, vehicle weight also plays an important factor in acceleration. 2001 Opel Vectra weights approximately 65 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, 2001 Opel Vectra (203 Nm @ 4000 RPM) has 16 more torque (in Nm) than 2005 Alfa Romeo 156. (187 Nm @ 3500 RPM). This means 2001 Opel Vectra 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 | 2001 Opel Vectra | |
| Make | Alfa Romeo | Opel |
| Model | 156 | Vectra |
| Year Released | 2005 | 2001 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1969 cc | 2196 cc |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 173 HP | 142 HP |
| Engine RPM | 4000 RPM | 5600 RPM |
| Torque | 187 Nm | 203 Nm |
| Torque RPM | 3500 RPM | 4000 RPM |
| Engine Bore Size | 83 mm | 86 mm |
| Engine Stroke Size | 91 mm | 94.6 mm |
| Engine Compression Ratio | 10.0:1 | 10.0:1 |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1250 kg | 1315 kg |
| Wheelbase Size | 2550 mm | 2650 mm |
| Fuel Tank Capacity | 63 L | 60 L |
