1997 Alfa Romeo 156 vs. 2004 Opel Vectra
To start off, 2004 Opel Vectra is newer by 7 year(s). Which means there will be less support and parts availability for 1997 Alfa Romeo 156. In addition, the cost of maintenance, including insurance, on 1997 Alfa Romeo 156 would be higher. At 2,958 cc (6 cylinders), 2004 Opel Vectra is equipped with a bigger engine. In terms of performance, 2004 Opel Vectra (149 HP @ 4000 RPM) has 6 more horse power than 1997 Alfa Romeo 156. (143 HP @ 6500 RPM) In normal driving conditions, 2004 Opel Vectra should accelerate faster than 1997 Alfa Romeo 156. With that said, vehicle weight also plays an important factor in acceleration. 2004 Opel Vectra weights approximately 383 kg more than 1997 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, 2004 Opel Vectra (370 Nm @ 1900 RPM) has 201 more torque (in Nm) than 1997 Alfa Romeo 156. (169 Nm @ 3500 RPM). This means 2004 Opel Vectra will have an easier job in driving up hills or pulling heavy equipment than 1997 Alfa Romeo 156.
Compare all specifications:
| 1997 Alfa Romeo 156 | 2004 Opel Vectra | |
| Make | Alfa Romeo | Opel |
| Model | 156 | Vectra |
| Year Released | 1997 | 2004 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1747 cc | 2958 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Horse Power | 143 HP | 149 HP |
| Engine RPM | 6500 RPM | 4000 RPM |
| Torque | 169 Nm | 370 Nm |
| Torque RPM | 3500 RPM | 1900 RPM |
| Engine Bore Size | 82 mm | 87.5 mm |
| Engine Stroke Size | 82.7 mm | 82 mm |
| Engine Compression Ratio | 10.3:1 | 18.5:1 |
| Top Speed | 210 km/hour | 226 km/hour |
| Acceleration 0-100mph | 9.3 seconds | 9.3 seconds |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1230 kg | 1613 kg |
| Vehicle Length | 4440 mm | 4600 mm |
| Vehicle Width | 1750 mm | 1800 mm |
| Vehicle Height | 1420 mm | 1470 mm |
| Wheelbase Size | 2600 mm | 2840 mm |
| Fuel Consumption Highway | 6.4 L/100km | 5.4 L/100km |
| Fuel Consumption City | 11.4 L/100km | 9.8 L/100km |
| Fuel Consumption Overall | 8.2 L/100km | 7.1 L/100km |
| Fuel Tank Capacity | 63 L | 61 L |
