2008 Opel Signum vs. 2002 Alfa Romeo 156
To start off, 2008 Opel Signum is newer by 6 year(s). Which means there will be less support and parts availability for 2002 Alfa Romeo 156. In addition, the cost of maintenance, including insurance, on 2002 Alfa Romeo 156 would be higher. At 3,179 cc (6 cylinders), 2002 Alfa Romeo 156 is equipped with a bigger engine. In terms of performance, 2002 Alfa Romeo 156 (248 HP @ 6200 RPM) has 99 more horse power than 2008 Opel Signum. (149 HP @ 4000 RPM) In normal driving conditions, 2002 Alfa Romeo 156 should accelerate faster than 2008 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2008 Opel Signum weights approximately 78 kg more than 2002 Alfa Romeo 156.
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 (315 Nm @ 2000 RPM) has 15 more torque (in Nm) than 2002 Alfa Romeo 156. (300 Nm @ 4800 RPM). This means 2008 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2002 Alfa Romeo 156. 2002 Alfa Romeo 156 has automatic transmission and 2008 Opel Signum has manual transmission. 2008 Opel Signum will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2002 Alfa Romeo 156 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2008 Opel Signum | 2002 Alfa Romeo 156 | |
| Make | Opel | Alfa Romeo |
| Model | Signum | 156 |
| Year Released | 2008 | 2002 |
| Body Type | Hatchback | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 1910 cc | 3179 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 149 HP | 248 HP |
| Engine RPM | 4000 RPM | 6200 RPM |
| Torque | 315 Nm | 300 Nm |
| Torque RPM | 2000 RPM | 4800 RPM |
| Engine Bore Size | 82 mm | 93 mm |
| Engine Stroke Size | 90.4 mm | 78 mm |
| Engine Compression Ratio | 18.0:1 | 10.5:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Top Speed | 209 km/hour | 250 km/hour |
| Drive Type | Front | Front |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1613 kg | 1535 kg |
| Vehicle Length | 4640 mm | 4450 mm |
| Vehicle Width | 1800 mm | 1750 mm |
| Vehicle Height | 1470 mm | 1400 mm |
| Wheelbase Size | 2840 mm | 2600 mm |
| Fuel Consumption Overall | 6.1 L/100km | 12.3 L/100km |
| Fuel Tank Capacity | 60 L | 63 L |
