2002 Alfa Romeo 156 vs. 2005 Opel Vectra
To start off, 2005 Opel Vectra is newer by 3 year(s). Which means there will be less support and parts availability for 2002 Alfa Romeo 156. In addition, the cost of maintenance, including insurance, on 2002 Alfa Romeo 156 would be higher. At 1,998 cc (4 cylinders), 2005 Opel Vectra is equipped with a bigger engine. In terms of performance, 2005 Opel Vectra (173 HP @ 5500 RPM) has 60 more horse power than 2002 Alfa Romeo 156. (113 HP @ 4000 RPM) In normal driving conditions, 2005 Opel Vectra should accelerate faster than 2002 Alfa Romeo 156. With that said, vehicle weight also plays an important factor in acceleration. 2005 Opel Vectra weights approximately 195 kg more than 2002 Alfa Romeo 156. 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, 2002 Alfa Romeo 156 (275 Nm @ 2000 RPM) has 10 more torque (in Nm) than 2005 Opel Vectra. (265 Nm @ 2500 RPM). This means 2002 Alfa Romeo 156 will have an easier job in driving up hills or pulling heavy equipment than 2005 Opel Vectra.
Compare all specifications:
| 2002 Alfa Romeo 156 | 2005 Opel Vectra | |
| Make | Alfa Romeo | Opel |
| Model | 156 | Vectra |
| Year Released | 2002 | 2005 |
| Body Type | Station Wagon | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1910 cc | 1998 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 113 HP | 173 HP |
| Engine RPM | 4000 RPM | 5500 RPM |
| Torque | 275 Nm | 265 Nm |
| Torque RPM | 2000 RPM | 2500 RPM |
| Engine Bore Size | 82 mm | 86 mm |
| Engine Stroke Size | 90.4 mm | 86 mm |
| Engine Compression Ratio | 18.5:1 | 9.5:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Top Speed | 191 km/hour | 230 km/hour |
| Acceleration 0-100mph | 10.7 seconds | 9.4 seconds |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1290 kg | 1485 kg |
| Vehicle Length | 4440 mm | 4600 mm |
| Vehicle Width | 1750 mm | 1800 mm |
| Vehicle Height | 1420 mm | 1470 mm |
| Wheelbase Size | 2600 mm | 2620 mm |
| Fuel Tank Capacity | 63 L | 61 L |
