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 1,994 cc (4 cylinders), 2001 Opel Vectra is equipped with a bigger engine. In terms of performance, 2005 Alfa Romeo 156 (118 HP @ 6200 RPM) has 18 more horse power than 2001 Opel Vectra. (100 HP @ 4300 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 49 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 (240 Nm @ 1950 RPM) has 94 more torque (in Nm) than 2005 Alfa Romeo 156. (146 Nm @ 4500 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 |
| Engine Position | Front | Front |
| Engine Size | 1598 cc | 1994 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 118 HP | 100 HP |
| Engine RPM | 6200 RPM | 4300 RPM |
| Torque | 146 Nm | 240 Nm |
| Torque RPM | 4500 RPM | 1950 RPM |
| Engine Compression Ratio | 10.3:1 | 18.5:1 |
| Fuel Type | Gasoline | Diesel |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1416 kg | 1465 kg |
| Vehicle Length | 4450 mm | 4260 mm |
| Vehicle Width | 1750 mm | 1710 mm |
| Vehicle Height | 1440 mm | 1430 mm |
| Wheelbase Size | 2550 mm | 2500 mm |
| Fuel Tank Capacity | 63 L | 60 L |
