2004 Alfa Romeo 156 vs. 2004 Opel Signum
To start off, both 2004 Alfa Romeo 156 and 2004 Opel Signum were released in the same year (2004). Therefore the support and the availability on parts for both vehicles should be relatively similar. At 3,175 cc (6 cylinders), 2004 Opel Signum is equipped with a bigger engine. In terms of performance, 2004 Opel Signum (208 HP @ 6200 RPM) has 70 more horse power than 2004 Alfa Romeo 156. (138 HP @ 6500 RPM) In normal driving conditions, 2004 Opel Signum should accelerate faster than 2004 Alfa Romeo 156. With that said, vehicle weight also plays an important factor in acceleration. 2004 Opel Signum weights approximately 205 kg more than 2004 Alfa Romeo 156. 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, 2004 Opel Signum (300 Nm @ 4000 RPM) has 137 more torque (in Nm) than 2004 Alfa Romeo 156. (163 Nm @ 3900 RPM). This means 2004 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2004 Alfa Romeo 156. 2004 Opel Signum has automatic transmission and 2004 Alfa Romeo 156 has manual transmission. 2004 Alfa Romeo 156 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2004 Opel Signum will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2004 Alfa Romeo 156 | 2004 Opel Signum | |
| Make | Alfa Romeo | Opel |
| Model | 156 | Signum |
| Year Released | 2004 | 2004 |
| Body Type | Station Wagon | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 1747 cc | 3175 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 138 HP | 208 HP |
| Engine RPM | 6500 RPM | 6200 RPM |
| Torque | 163 Nm | 300 Nm |
| Torque RPM | 3900 RPM | 4000 RPM |
| Engine Bore Size | 82.1 mm | 87.5 mm |
| Engine Stroke Size | 82.7 mm | 88 mm |
| Engine Compression Ratio | 10.3:1 | 10.0:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Acceleration 0-100mph | 9.7 seconds | 7.9 seconds |
| Drive Type | Front | Front |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1390 kg | 1595 kg |
| Vehicle Length | 4450 mm | 4640 mm |
| Vehicle Width | 1750 mm | 1800 mm |
| Vehicle Height | 1400 mm | 1470 mm |
| Wheelbase Size | 2600 mm | 2740 mm |
| Fuel Consumption Overall | 8.6 L/100km | 10.1 L/100km |
| Fuel Tank Capacity | 63 L | 52 L |
