2008 Alfa Romeo 147 vs. 2003 Opel Signum
To start off, 2008 Alfa Romeo 147 is newer by 5 year(s). Which means there will be less support and parts availability for 2003 Opel Signum. In addition, the cost of maintenance, including insurance, on 2003 Opel Signum would be higher. At 2,172 cc (4 cylinders), 2003 Opel Signum is equipped with a bigger engine. In terms of performance, 2008 Alfa Romeo 147 (118 HP @ 4200 RPM) has 3 more horse power than 2003 Opel Signum. (115 HP @ 3000 RPM). In normal driving conditions, 2008 Alfa Romeo 147 should accelerate faster than 2003 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2003 Opel Signum weights approximately 270 kg more than 2008 Alfa Romeo 147.
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 Opel Signum (280 Nm @ 1500 RPM) has 134 more torque (in Nm) than 2008 Alfa Romeo 147. (146 Nm @ 4200 RPM). This means 2003 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2008 Alfa Romeo 147.
Compare all specifications:
| 2008 Alfa Romeo 147 | 2003 Opel Signum | |
| Make | Alfa Romeo | Opel |
| Model | 147 | Signum |
| Year Released | 2008 | 2003 |
| Engine Position | Front | Front |
| Engine Size | 1597 cc | 2172 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 118 HP | 115 HP |
| Engine RPM | 4200 RPM | 3000 RPM |
| Torque | 146 Nm | 280 Nm |
| Torque RPM | 4200 RPM | 1500 RPM |
| Engine Bore Size | 82 mm | 84.1 mm |
| Engine Stroke Size | 75.7 mm | 98 mm |
| Fuel Type | Gasoline | Diesel |
| Drive Type | Front | Front |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 3 doors | 5 doors |
| Vehicle Weight | 1265 kg | 1535 kg |
| Vehicle Length | 4230 mm | 4640 mm |
| Vehicle Height | 1450 mm | 1470 mm |
| Wheelbase Size | 2550 mm | 2840 mm |
