1997 Alfa Romeo 156 vs. 2004 Opel Signum
To start off, 2004 Opel Signum is newer by 7 year(s). Which means there will be less support and parts availability for 1997 Alfa Romeo 156. In addition, the cost of maintenance, including insurance, on 1997 Alfa Romeo 156 would be higher. At 1,910 cc (4 cylinders), 1997 Alfa Romeo 156 is equipped with a bigger engine. In terms of performance, 2004 Opel Signum (125 HP @ 5600 RPM) has 22 more horse power than 1997 Alfa Romeo 156. (103 HP @ 4000 RPM) In normal driving conditions, 2004 Opel Signum should accelerate faster than 1997 Alfa Romeo 156. With that said, vehicle weight also plays an important factor in acceleration. 2004 Opel Signum weights approximately 110 kg more than 1997 Alfa Romeo 156. 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, 1997 Alfa Romeo 156 (256 Nm @ 2000 RPM) has 86 more torque (in Nm) than 2004 Opel Signum. (170 Nm @ 3800 RPM). This means 1997 Alfa Romeo 156 will have an easier job in driving up hills or pulling heavy equipment than 2004 Opel Signum.
Compare all specifications:
| 1997 Alfa Romeo 156 | 2004 Opel Signum | |
| Make | Alfa Romeo | Opel |
| Model | 156 | Signum |
| Year Released | 1997 | 2004 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 1910 cc | 1796 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 103 HP | 125 HP |
| Engine RPM | 4000 RPM | 5600 RPM |
| Torque | 256 Nm | 170 Nm |
| Torque RPM | 2000 RPM | 3800 RPM |
| Engine Bore Size | 82 mm | 80.5 mm |
| Engine Stroke Size | 90.4 mm | 88.2 mm |
| Fuel Type | Diesel | Gasoline |
| Top Speed | 188 km/hour | 197 km/hour |
| Drive Type | Front | Front |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1270 kg | 1380 kg |
| Vehicle Length | 4440 mm | 4640 mm |
| Vehicle Width | 1750 mm | 1800 mm |
| Vehicle Height | 1420 mm | 1470 mm |
| Wheelbase Size | 2600 mm | 2700 mm |
| Fuel Consumption | 4.7 L/100km | 6.1 L/100km |
| Fuel Consumption City | 7.8 L/100km | 11.1 L/100km |
| Fuel Consumption Overall | 5.8 L/100km | 7.5 L/100km |
| Fuel Tank Capacity | 63 L | 58 L |
