2006 Alfa Romeo 156 vs. 1999 Opel Signum
To start off, 2006 Alfa Romeo 156 is newer by 7 year(s). Which means there will be less support and parts availability for 1999 Opel Signum. In addition, the cost of maintenance, including insurance, on 1999 Opel Signum would be higher. At 2,387 cc (5 cylinders), 2006 Alfa Romeo 156 is equipped with a bigger engine. In terms of performance, 2006 Alfa Romeo 156 (173 HP @ 4000 RPM) has 74 more horse power than 1999 Opel Signum. (99 HP @ 3120 RPM). In normal driving conditions, 2006 Alfa Romeo 156 should accelerate faster than 1999 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 1999 Opel Signum weights approximately 85 kg more than 2006 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, 2006 Alfa Romeo 156 (385 Nm @ 2000 RPM) has 145 more torque (in Nm) than 1999 Opel Signum. (240 Nm @ 1500 RPM). This means 2006 Alfa Romeo 156 will have an easier job in driving up hills or pulling heavy equipment than 1999 Opel Signum.
Compare all specifications:
| 2006 Alfa Romeo 156 | 1999 Opel Signum | |
| Make | Alfa Romeo | Opel |
| Model | 156 | Signum |
| Year Released | 2006 | 1999 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 2387 cc | 1995 cc |
| Engine Cylinders | 5 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 173 HP | 99 HP |
| Engine RPM | 4000 RPM | 3120 RPM |
| Torque | 385 Nm | 240 Nm |
| Torque RPM | 2000 RPM | 1500 RPM |
| Engine Bore Size | 82 mm | 84 mm |
| Engine Stroke Size | 90.4 mm | 90 mm |
| Engine Compression Ratio | 18.5:1 | 18.5:1 |
| Top Speed | 225 km/hour | 185 km/hour |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1510 kg | 1595 kg |
| Vehicle Length | 4440 mm | 4640 mm |
| Vehicle Width | 1750 mm | 1800 mm |
| Vehicle Height | 1440 mm | 1470 mm |
| Wheelbase Size | 2550 mm | 2840 mm |
| Fuel Tank Capacity | 63 L | 60 L |
