2009 BMW 545 vs. 2005 Opel Signum
To start off, 2009 BMW 545 is newer by 4 year(s). Which means there will be less support and parts availability for 2005 Opel Signum. In addition, the cost of maintenance, including insurance, on 2005 Opel Signum would be higher. At 4,398 cc (8 cylinders), 2009 BMW 545 is equipped with a bigger engine. In terms of performance, 2009 BMW 545 (328 HP @ 6100 RPM) has 204 more horse power than 2005 Opel Signum. (124 HP @ 3250 RPM). In normal driving conditions, 2009 BMW 545 should accelerate faster than 2005 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2009 BMW 545 weights approximately 365 kg more than 2005 Opel Signum. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 BMW 545 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 2009 BMW 545. However, in wet, icy, snow, or gravel driving conditions, 2005 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, 2009 BMW 545 (450 Nm @ 3600 RPM) has 170 more torque (in Nm) than 2005 Opel Signum. (280 Nm @ 1500 RPM). This means 2009 BMW 545 will have an easier job in driving up hills or pulling heavy equipment than 2005 Opel Signum.
Compare all specifications:
| 2009 BMW 545 | 2005 Opel Signum | |
| Make | BMW | Opel |
| Model | 545 | Signum |
| Year Released | 2009 | 2005 |
| Body Type | Station Wagon | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 4398 cc | 2171 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 328 HP | 124 HP |
| Engine RPM | 6100 RPM | 3250 RPM |
| Torque | 450 Nm | 280 Nm |
| Torque RPM | 3600 RPM | 1500 RPM |
| Engine Bore Size | 92 mm | 84 mm |
| Engine Stroke Size | 82.7 mm | 98 mm |
| Engine Compression Ratio | 10.0:1 | 18.5:1 |
| Fuel Type | Gasoline - Premium | Diesel |
| Top Speed | 250 km/hour | 201 km/hour |
| Acceleration 0-100mph | 5.9 seconds | 11.2 seconds |
| Drive Type | Rear | Front |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1975 kg | 1610 kg |
| Vehicle Length | 4850 mm | 4640 mm |
| Vehicle Width | 1850 mm | 1800 mm |
| Vehicle Height | 1500 mm | 1470 mm |
| Wheelbase Size | 2840 mm | 2710 mm |
| Fuel Consumption Overall | 11.3 L/100km | 6.3 L/100km |
| Fuel Tank Capacity | 70 L | 60 L |
