2005 Alfa Romeo 156 vs. 1999 Opel Vectra
To start off, 2005 Alfa Romeo 156 is newer by 6 year(s). Which means there will be less support and parts availability for 1999 Opel Vectra. In addition, the cost of maintenance, including insurance, on 1999 Opel Vectra would be higher. At 2,492 cc (6 cylinders), 2005 Alfa Romeo 156 is equipped with a bigger engine. In terms of performance, 2005 Alfa Romeo 156 (185 HP @ 5000 RPM) has 104 more horse power than 1999 Opel Vectra. (81 HP @ 4300 RPM). In normal driving conditions, 2005 Alfa Romeo 156 should accelerate faster than 1999 Opel Vectra. With that said, vehicle weight also plays an important factor in acceleration. 2005 Alfa Romeo 156 weights approximately 90 kg more than 1999 Opel Vectra. 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 Alfa Romeo 156 (222 Nm @ 5000 RPM) has 37 more torque (in Nm) than 1999 Opel Vectra. (185 Nm @ 1800 RPM). This means 2005 Alfa Romeo 156 will have an easier job in driving up hills or pulling heavy equipment than 1999 Opel Vectra.
Compare all specifications:
| 2005 Alfa Romeo 156 | 1999 Opel Vectra | |
| Make | Alfa Romeo | Opel |
| Model | 156 | Vectra |
| Year Released | 2005 | 1999 |
| Engine Position | Front | Front |
| Engine Size | 2492 cc | 1995 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 185 HP | 81 HP |
| Engine RPM | 5000 RPM | 4300 RPM |
| Torque | 222 Nm | 185 Nm |
| Torque RPM | 5000 RPM | 1800 RPM |
| Engine Bore Size | 88 mm | 84 mm |
| Engine Stroke Size | 68.3 mm | 90 mm |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Weight | 1490 kg | 1400 kg |
| Vehicle Length | 4450 mm | 4500 mm |
| Vehicle Width | 1750 mm | 1720 mm |
| Vehicle Height | 1440 mm | 1500 mm |
| Wheelbase Size | 2710 mm | 2650 mm |
