2007 Alfa Romeo 166 vs. 2008 Opel Signum
To start off, 2008 Opel Signum is newer by 1 year(s). Which means there will be less support and parts availability for 2007 Alfa Romeo 166. In addition, the cost of maintenance, including insurance, on 2007 Alfa Romeo 166 would be higher. At 3,179 cc (6 cylinders), 2007 Alfa Romeo 166 is equipped with a bigger engine. In terms of performance, 2007 Alfa Romeo 166 (236 HP @ 6200 RPM) has 63 more horse power than 2008 Opel Signum. (173 HP @ 5500 RPM). In normal driving conditions, 2007 Alfa Romeo 166 should accelerate faster than 2008 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2008 Opel Signum weights approximately 18 kg more than 2007 Alfa Romeo 166.
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, 2007 Alfa Romeo 166 (289 Nm @ 4800 RPM) has 24 more torque (in Nm) than 2008 Opel Signum. (265 Nm @ 2500 RPM). This means 2007 Alfa Romeo 166 will have an easier job in driving up hills or pulling heavy equipment than 2008 Opel Signum.
Compare all specifications:
| 2007 Alfa Romeo 166 | 2008 Opel Signum | |
| Make | Alfa Romeo | Opel |
| Model | 166 | Signum |
| Year Released | 2007 | 2008 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 3179 cc | 1998 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 236 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 | 10.5:1 | 9.5:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Top Speed | 245 km/hour | 220 km/hour |
| Acceleration 0-100mph | 7.4 seconds | 9.4 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 | 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 |
