2008 Alfa Romeo 166 vs. 2008 Opel Signum
To start off, both 2008 Alfa Romeo 166 and 2008 Opel Signum were released in the same year (2008). Therefore the support and the availability on parts for both vehicles should be relatively similar. At 3,177 cc (6 cylinders), 2008 Alfa Romeo 166 is equipped with a bigger engine. In terms of performance, 2008 Alfa Romeo 166 (237 HP @ 6200 RPM) has 64 more horse power than 2008 Opel Signum. (173 HP @ 5500 RPM). In normal driving conditions, 2008 Alfa Romeo 166 should accelerate faster than 2008 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2008 Alfa Romeo 166 weights approximately 55 kg more than 2008 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, 2008 Alfa Romeo 166 (289 Nm @ 4800 RPM) has 24 more torque (in Nm) than 2008 Opel Signum. (265 Nm @ 2500 RPM). This means 2008 Alfa Romeo 166 will have an easier job in driving up hills or pulling heavy equipment than 2008 Opel Signum.
Compare all specifications:
| 2008 Alfa Romeo 166 | 2008 Opel Signum | |
| Make | Alfa Romeo | Opel |
| Model | 166 | Signum |
| Year Released | 2008 | 2008 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 3177 cc | 1998 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 237 HP | 173 HP |
| Engine RPM | 6200 RPM | 5500 RPM |
| Torque | 289 Nm | 265 Nm |
| Torque RPM | 4800 RPM | 2500 RPM |
| Engine Bore Size | 93 mm | 86 mm |
| Engine Stroke Size | 78 mm | 86 mm |
| Engine Compression Ratio | 10.0:1 | 9.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 245 km/hour | 220 km/hour |
| Acceleration 0-100mph | 7.4 seconds | 9.4 seconds |
| Drive Type | Front | Front |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1615 kg | 1560 kg |
| Vehicle Length | 4730 mm | 4640 mm |
| Vehicle Width | 1810 mm | 1800 mm |
| Vehicle Height | 1420 mm | 1470 mm |
| Wheelbase Size | 2710 mm | 2840 mm |
| Fuel Consumption Overall | 12.5 L/100km | 9.2 L/100km |
| Fuel Tank Capacity | 69 L | 60 L |
