2009 BMW 745 vs. 2005 Opel Signum
To start off, 2009 BMW 745 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 745 is equipped with a bigger engine. In terms of performance, 2009 BMW 745 (328 HP @ 6100 RPM) has 155 more horse power than 2005 Opel Signum. (173 HP @ 5500 RPM). In normal driving conditions, 2009 BMW 745 should accelerate faster than 2005 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2009 BMW 745 weights approximately 385 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 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 2009 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, 2009 BMW 745 (450 Nm @ 3600 RPM) has 185 more torque (in Nm) than 2005 Opel Signum. (265 Nm @ 2500 RPM). This means 2009 BMW 745 will have an easier job in driving up hills or pulling heavy equipment than 2005 Opel Signum. 2009 BMW 745 has automatic transmission and 2005 Opel Signum has manual transmission. 2005 Opel Signum will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 BMW 745 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 BMW 745 | 2005 Opel Signum | |
| Make | BMW | Opel |
| Model | 745 | Signum |
| Year Released | 2009 | 2005 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 4398 cc | 1908 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 328 HP | 173 HP |
| Engine RPM | 6100 RPM | 5500 RPM |
| Torque | 450 Nm | 265 Nm |
| Torque RPM | 3600 RPM | 2500 RPM |
| Engine Bore Size | 92.1 mm | 86 mm |
| Engine Stroke Size | 82.7 mm | 86 mm |
| Engine Compression Ratio | 10.0:1 | 9.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Acceleration 0-100mph | 6.3 seconds | 9.4 seconds |
| Drive Type | Rear | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1945 kg | 1560 kg |
| Vehicle Length | 5040 mm | 4640 mm |
| Vehicle Width | 1910 mm | 1800 mm |
| Vehicle Height | 1500 mm | 1470 mm |
| Wheelbase Size | 3000 mm | 2620 mm |
| Fuel Consumption Overall | 10.9 L/100km | 9.2 L/100km |
| Fuel Tank Capacity | 88 L | 60 L |
