2004 Opel Signum vs. 2001 Alfa Romeo 166
To start off, 2004 Opel Signum is newer by 3 year(s). Which means there will be less support and parts availability for 2001 Alfa Romeo 166. In addition, the cost of maintenance, including insurance, on 2001 Alfa Romeo 166 would be higher. At 1,995 cc (4 cylinders), 2004 Opel Signum is equipped with a bigger engine. In terms of performance, 2004 Opel Signum (173 HP @ 5500 RPM) has 25 more horse power than 2001 Alfa Romeo 166. (148 HP @ 6500 RPM). In normal driving conditions, 2004 Opel Signum should accelerate faster than 2001 Alfa Romeo 166. With that said, vehicle weight also plays an important factor in acceleration. 2004 Opel Signum weights approximately 65 kg more than 2001 Alfa Romeo 166. 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, 2004 Opel Signum (265 Nm @ 2500 RPM) has 84 more torque (in Nm) than 2001 Alfa Romeo 166. (181 Nm @ 3800 RPM). This means 2004 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2001 Alfa Romeo 166.
Compare all specifications:
| 2004 Opel Signum | 2001 Alfa Romeo 166 | |
| Make | Opel | Alfa Romeo |
| Model | Signum | 166 |
| Year Released | 2004 | 2001 |
| Body Type | Hatchback | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1995 cc | 1970 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 173 HP | 148 HP |
| Engine RPM | 5500 RPM | 6500 RPM |
| Torque | 265 Nm | 181 Nm |
| Torque RPM | 2500 RPM | 3800 RPM |
| Engine Compression Ratio | 9.5:1 | 10.0:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 220 km/hour | 206 km/hour |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1560 kg | 1495 kg |
| Vehicle Length | 4640 mm | 4730 mm |
| Vehicle Width | 1800 mm | 1810 mm |
| Vehicle Height | 1470 mm | 1420 mm |
| Wheelbase Size | 2840 mm | 2600 mm |
| Fuel Consumption Overall | 9.4 L/100km | 9.7 L/100km |
