2006 BMW 745 vs. 2005 Opel Signum
To start off, 2006 BMW 745 is newer by 1 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 4,423 cc (8 cylinders), 2006 BMW 745 is equipped with a bigger engine. In terms of performance, 2006 BMW 745 (325 HP @ 3800 RPM) has 201 more horse power than 2005 Opel Signum. (124 HP @ 3250 RPM). In normal driving conditions, 2006 BMW 745 should accelerate faster than 2005 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW 745 weights approximately 505 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 2006 BMW 745 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 745. 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, 2006 BMW 745 (700 Nm @ 1900 RPM) has 420 more torque (in Nm) than 2005 Opel Signum. (280 Nm @ 1500 RPM). This means 2006 BMW 745 will have an easier job in driving up hills or pulling heavy equipment than 2005 Opel Signum.
Compare all specifications:
| 2006 BMW 745 | 2005 Opel Signum | |
| Make | BMW | Opel |
| Model | 745 | Signum |
| Year Released | 2006 | 2005 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 4423 cc | 2171 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 325 HP | 124 HP |
| Engine RPM | 3800 RPM | 3250 RPM |
| Torque | 700 Nm | 280 Nm |
| Torque RPM | 1900 RPM | 1500 RPM |
| Engine Compression Ratio | 17.0:1 | 18.5:1 |
| Fuel Type | Diesel | Diesel |
| Top Speed | 245 km/hour | 201 km/hour |
| Acceleration 0-100mph | 6.6 seconds | 11.2 seconds |
| Drive Type | Rear | Front |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 2115 kg | 1610 kg |
| Vehicle Length | 5050 mm | 4640 mm |
| Vehicle Width | 1910 mm | 1800 mm |
| Vehicle Height | 1500 mm | 1470 mm |
| Wheelbase Size | 3000 mm | 2710 mm |
| Fuel Consumption Overall | 9.5 L/100km | 6.3 L/100km |
| Fuel Tank Capacity | 88 L | 60 L |
