2006 BMW 550 vs. 2004 Opel Signum
To start off, 2006 BMW 550 is newer by 2 year(s). Which means there will be less support and parts availability for 2004 Opel Signum. In addition, the cost of maintenance, including insurance, on 2004 Opel Signum would be higher. At 4,799 cc (8 cylinders), 2006 BMW 550 is equipped with a bigger engine. In terms of performance, 2006 BMW 550 (360 HP @ 6300 RPM) has 237 more horse power than 2004 Opel Signum. (123 HP @ 6000 RPM). In normal driving conditions, 2006 BMW 550 should accelerate faster than 2004 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW 550 weights approximately 245 kg more than 2004 Opel Signum. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2006 BMW 550 is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 2006 BMW 550. However, in wet, icy, snow, or gravel driving conditions, 2004 Opel Signum, being front wheel drive (FWD), will offer much better control with better grip. 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, 2006 BMW 550 (488 Nm @ 3400 RPM) has 321 more torque (in Nm) than 2004 Opel Signum. (167 Nm @ 3800 RPM). This means 2006 BMW 550 will have an easier job in driving up hills or pulling heavy equipment than 2004 Opel Signum.
Compare all specifications:
| 2006 BMW 550 | 2004 Opel Signum | |
| Make | BMW | Opel |
| Model | 550 | Signum |
| Year Released | 2006 | 2004 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 4799 cc | 1796 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 360 HP | 123 HP |
| Engine RPM | 6300 RPM | 6000 RPM |
| Torque | 488 Nm | 167 Nm |
| Torque RPM | 3400 RPM | 3800 RPM |
| Engine Bore Size | 93.1 mm | 80.5 mm |
| Engine Stroke Size | 88.4 mm | 88.2 mm |
| Engine Compression Ratio | 10.5:1 | 10.5:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Acceleration 0-100mph | 5.5 seconds | 12.2 seconds |
| Drive Type | Rear | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1725 kg | 1480 kg |
| Vehicle Length | 4880 mm | 4640 mm |
| Vehicle Width | 1850 mm | 1800 mm |
| Vehicle Height | 1470 mm | 1470 mm |
| Wheelbase Size | 2890 mm | 2640 mm |
| Fuel Consumption Overall | 12.4 L/100km | 8.1 L/100km |
| Fuel Tank Capacity | 70 L | 60 L |
