2004 Opel Vectra vs. 2008 Alfa Romeo 156
To start off, 2008 Alfa Romeo 156 is newer by 4 year(s). Which means there will be less support and parts availability for 2004 Opel Vectra. In addition, the cost of maintenance, including insurance, on 2004 Opel Vectra would be higher. At 2,958 cc (6 cylinders), 2004 Opel Vectra is equipped with a bigger engine. In terms of performance, 2008 Alfa Romeo 156 (189 HP @ 6300 RPM) has 15 more horse power than 2004 Opel Vectra. (174 HP @ 4000 RPM) In normal driving conditions, 2008 Alfa Romeo 156 should accelerate faster than 2004 Opel Vectra. With that said, vehicle weight also plays an important factor in acceleration. 2004 Opel Vectra weights approximately 354 kg more than 2008 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, 2004 Opel Vectra (370 Nm @ 1900 RPM) has 152 more torque (in Nm) than 2008 Alfa Romeo 156. (218 Nm @ 5000 RPM). This means 2004 Opel Vectra will have an easier job in driving up hills or pulling heavy equipment than 2008 Alfa Romeo 156. 2004 Opel Vectra has automatic transmission and 2008 Alfa Romeo 156 has manual transmission. 2008 Alfa Romeo 156 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2004 Opel Vectra will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2004 Opel Vectra | 2008 Alfa Romeo 156 | |
| Make | Opel | Alfa Romeo |
| Model | Vectra | 156 |
| Year Released | 2004 | 2008 |
| Engine Position | Front | Front |
| Engine Size | 2958 cc | 2492 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 174 HP | 189 HP |
| Engine RPM | 4000 RPM | 6300 RPM |
| Torque | 370 Nm | 218 Nm |
| Torque RPM | 1900 RPM | 5000 RPM |
| Engine Bore Size | 87.5 mm | 88 mm |
| Engine Stroke Size | 82 mm | 68.3 mm |
| Engine Compression Ratio | 18.5:1 | 10.3:1 |
| Fuel Type | Diesel | Gasoline |
| Top Speed | 222 km/hour | 230 km/hour |
| Acceleration 0-100mph | 9.8 seconds | 7.3 seconds |
| Drive Type | Front | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1710 kg | 1356 kg |
| Vehicle Length | 4830 mm | 4440 mm |
| Vehicle Width | 1770 mm | 1750 mm |
| Vehicle Height | 1470 mm | 1440 mm |
| Wheelbase Size | 2700 mm | 2600 mm |
| Fuel Consumption Overall | 7.3 L/100km | 11.8 L/100km |
| Fuel Tank Capacity | 60 L | 63 L |
