2006 Alfa Romeo GT vs. 2008 Opel Signum
To start off, 2008 Opel Signum is newer by 2 year(s). Which means there will be less support and parts availability for 2006 Alfa Romeo GT. In addition, the cost of maintenance, including insurance, on 2006 Alfa Romeo GT would be higher. At 3,179 cc (6 cylinders), 2006 Alfa Romeo GT is equipped with a bigger engine. In terms of performance, 2006 Alfa Romeo GT (237 HP @ 6200 RPM) has 62 more horse power than 2008 Opel Signum. (175 HP @ 4000 RPM). In normal driving conditions, 2006 Alfa Romeo GT should accelerate faster than 2008 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2008 Opel Signum weights approximately 182 kg more than 2006 Alfa Romeo GT.
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 Opel Signum (370 Nm @ 1900 RPM) has 70 more torque (in Nm) than 2006 Alfa Romeo GT. (300 Nm @ 4800 RPM). This means 2008 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2006 Alfa Romeo GT.
Compare all specifications:
| 2006 Alfa Romeo GT | 2008 Opel Signum | |
| Make | Alfa Romeo | Opel |
| Model | GT | Signum |
| Year Released | 2006 | 2008 |
| Body Type | Coupe | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 3179 cc | 2957 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 237 HP | 175 HP |
| Engine RPM | 6200 RPM | 4000 RPM |
| Torque | 300 Nm | 370 Nm |
| Torque RPM | 4800 RPM | 1900 RPM |
| Engine Bore Size | 93 mm | 87.5 mm |
| Engine Stroke Size | 78 mm | 82 mm |
| Engine Compression Ratio | 10.0:1 | 18.5:1 |
| Fuel Type | Gasoline - Premium | Diesel |
| Top Speed | 243 km/hour | 221 km/hour |
| Acceleration 0-100mph | 6.7 seconds | 9.4 seconds |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1488 kg | 1670 kg |
| Vehicle Length | 4500 mm | 4640 mm |
| Vehicle Width | 1770 mm | 1800 mm |
| Vehicle Height | 1370 mm | 1470 mm |
| Wheelbase Size | 2600 mm | 2840 mm |
| Fuel Consumption Overall | 12.4 L/100km | 7.4 L/100km |
| Fuel Tank Capacity | 63 L | 60 L |
