2007 Alfa Romeo 159 vs. 2003 Opel Signum
To start off, 2007 Alfa Romeo 159 is newer by 4 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 2,198 cc (4 cylinders), 2007 Alfa Romeo 159 is equipped with a bigger engine. In terms of performance, 2007 Alfa Romeo 159 (182 HP @ 6500 RPM) has 67 more horse power than 2003 Opel Signum. (115 HP @ 3000 RPM). In normal driving conditions, 2007 Alfa Romeo 159 should accelerate faster than 2003 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2007 Alfa Romeo 159 weights approximately 31 kg more than 2003 Opel Signum. 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 Opel Signum (280 Nm @ 1500 RPM) has 50 more torque (in Nm) than 2007 Alfa Romeo 159. (230 Nm @ 4500 RPM). This means 2003 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2007 Alfa Romeo 159.
Compare all specifications:
| 2007 Alfa Romeo 159 | 2003 Opel Signum | |
| Make | Alfa Romeo | Opel |
| Model | 159 | Signum |
| Year Released | 2007 | 2003 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 2198 cc | 2172 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 182 HP | 115 HP |
| Engine RPM | 6500 RPM | 3000 RPM |
| Torque | 230 Nm | 280 Nm |
| Torque RPM | 4500 RPM | 1500 RPM |
| Engine Bore Size | 86 mm | 84.1 mm |
| Engine Stroke Size | 94.6 mm | 98 mm |
| Fuel Type | Gasoline - Premium | Diesel |
| Drive Type | Front | Front |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1566 kg | 1535 kg |
| Vehicle Length | 4670 mm | 4640 mm |
| Vehicle Width | 1830 mm | 1800 mm |
| Vehicle Height | 1420 mm | 1470 mm |
| Wheelbase Size | 2710 mm | 2840 mm |
