2003 Alfa Romeo 156 vs. 1999 Opel Vectra
To start off, 2003 Alfa Romeo 156 is newer by 4 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 2,387 cc (6 cylinders), 2003 Alfa Romeo 156 is equipped with a bigger engine. In terms of performance, 2003 Alfa Romeo 156 (189 HP @ 6300 RPM) has 108 more horse power than 1999 Opel Vectra. (81 HP @ 4300 RPM). In normal driving conditions, 2003 Alfa Romeo 156 should accelerate faster than 1999 Opel Vectra. With that said, vehicle weight also plays an important factor in acceleration. 2003 Alfa Romeo 156 weights approximately 34 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, 2003 Alfa Romeo 156 (218 Nm @ 5000 RPM) has 33 more torque (in Nm) than 1999 Opel Vectra. (185 Nm @ 1800 RPM). This means 2003 Alfa Romeo 156 will have an easier job in driving up hills or pulling heavy equipment than 1999 Opel Vectra.
Compare all specifications:
| 2003 Alfa Romeo 156 | 1999 Opel Vectra | |
| Make | Alfa Romeo | Opel |
| Model | 156 | Vectra |
| Year Released | 2003 | 1999 |
| Engine Position | Front | Front |
| Engine Size | 2387 cc | 1995 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 189 HP | 81 HP |
| Engine RPM | 6300 RPM | 4300 RPM |
| Torque | 218 Nm | 185 Nm |
| Torque RPM | 5000 RPM | 1800 RPM |
| Engine Bore Size | 88 mm | 84 mm |
| Engine Stroke Size | 68.3 mm | 90 mm |
| Fuel Type | Gasoline - Premium | Diesel |
| Drive Type | Front | Front |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Weight | 1434 kg | 1400 kg |
| Vehicle Length | 4440 mm | 4500 mm |
| Vehicle Width | 1750 mm | 1720 mm |
| Vehicle Height | 1400 mm | 1500 mm |
| Wheelbase Size | 2600 mm | 2650 mm |
