2005 Alfa Romeo 147 vs. 2008 Opel Signum
To start off, 2008 Opel Signum is newer by 3 year(s). Which means there will be less support and parts availability for 2005 Alfa Romeo 147. In addition, the cost of maintenance, including insurance, on 2005 Alfa Romeo 147 would be higher. At 3,175 cc (6 cylinders), 2008 Opel Signum is equipped with a bigger engine. In terms of performance, 2008 Opel Signum (208 HP @ 6200 RPM) has 60 more horse power than 2005 Alfa Romeo 147. (148 HP @ 6300 RPM) In normal driving conditions, 2008 Opel Signum should accelerate faster than 2005 Alfa Romeo 147. With that said, vehicle weight also plays an important factor in acceleration. 2008 Opel Signum weights approximately 285 kg more than 2005 Alfa Romeo 147. 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, 2008 Opel Signum (300 Nm @ 4000 RPM) has 119 more torque (in Nm) than 2005 Alfa Romeo 147. (181 Nm @ 3800 RPM). This means 2008 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2005 Alfa Romeo 147.
Compare all specifications:
| 2005 Alfa Romeo 147 | 2008 Opel Signum | |
| Make | Alfa Romeo | Opel |
| Model | 147 | Signum |
| Year Released | 2005 | 2008 |
| Engine Position | Front | Front |
| Engine Size | 1908 cc | 3175 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 148 HP | 208 HP |
| Engine RPM | 6300 RPM | 6200 RPM |
| Torque | 181 Nm | 300 Nm |
| Torque RPM | 3800 RPM | 4000 RPM |
| Engine Bore Size | 83 mm | 87.5 mm |
| Engine Stroke Size | 91 mm | 88 mm |
| Engine Compression Ratio | 10.0:1 | 10.0:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 208 km/hour | 237 km/hour |
| Acceleration 0-100mph | 9.3 seconds | 7.9 seconds |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 3 doors | 5 doors |
| Vehicle Weight | 1325 kg | 1610 kg |
| Vehicle Length | 4180 mm | 4640 mm |
| Vehicle Width | 1740 mm | 1800 mm |
| Vehicle Height | 1470 mm | 1470 mm |
| Wheelbase Size | 2550 mm | 2840 mm |
| Fuel Consumption Overall | 8.9 L/100km | 10.1 L/100km |
| Fuel Tank Capacity | 60 L | 60 L |
