2003 Alfa Romeo 166 vs. 2001 Opel Signum
To start off, 2003 Alfa Romeo 166 is newer by 2 year(s). Which means there will be less support and parts availability for 2001 Opel Signum. In addition, the cost of maintenance, including insurance, on 2001 Opel Signum would be higher. At 2,387 cc (5 cylinders), 2003 Alfa Romeo 166 is equipped with a bigger engine. In terms of performance, 2003 Alfa Romeo 166 (148 HP @ 4000 RPM) has 25 more horse power than 2001 Opel Signum. (123 HP @ 6000 RPM). In normal driving conditions, 2003 Alfa Romeo 166 should accelerate faster than 2001 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2003 Alfa Romeo 166 weights approximately 62 kg more than 2001 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 Alfa Romeo 166 (300 Nm @ 1800 RPM) has 133 more torque (in Nm) than 2001 Opel Signum. (167 Nm @ 3800 RPM). This means 2003 Alfa Romeo 166 will have an easier job in driving up hills or pulling heavy equipment than 2001 Opel Signum.
Compare all specifications:
| 2003 Alfa Romeo 166 | 2001 Opel Signum | |
| Make | Alfa Romeo | Opel |
| Model | 166 | Signum |
| Year Released | 2003 | 2001 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 2387 cc | 1796 cc |
| Engine Cylinders | 5 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 148 HP | 123 HP |
| Engine RPM | 4000 RPM | 6000 RPM |
| Torque | 300 Nm | 167 Nm |
| Torque RPM | 1800 RPM | 3800 RPM |
| Engine Compression Ratio | 18.5:1 | 10.5:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Acceleration 0-100mph | 9.9 seconds | 12.2 seconds |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1542 kg | 1480 kg |
| Vehicle Length | 4730 mm | 4640 mm |
| Vehicle Width | 1810 mm | 1800 mm |
| Vehicle Height | 1420 mm | 1470 mm |
| Wheelbase Size | 2600 mm | 2620 mm |
| Fuel Consumption Overall | 7.5 L/100km | 7.9 L/100km |
| Fuel Tank Capacity | 69 L | 60 L |
