2001 BMW 745 vs. 2005 Opel Signum
To start off, 2005 Opel Signum is newer by 4 year(s). Which means there will be less support and parts availability for 2001 BMW 745. In addition, the cost of maintenance, including insurance, on 2001 BMW 745 would be higher. At 4,398 cc (8 cylinders), 2001 BMW 745 is equipped with a bigger engine. In terms of performance, 2001 BMW 745 (325 HP @ 6100 RPM) has 205 more horse power than 2005 Opel Signum. (120 HP @ 6000 RPM). In normal driving conditions, 2001 BMW 745 should accelerate faster than 2005 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2001 BMW 745 weights approximately 503 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 2001 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 2001 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, 2001 BMW 745 (450 Nm @ 3600 RPM) has 285 more torque (in Nm) than 2005 Opel Signum. (165 Nm @ 3800 RPM). This means 2001 BMW 745 will have an easier job in driving up hills or pulling heavy equipment than 2005 Opel Signum. 2001 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. 2001 BMW 745 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2001 BMW 745 | 2005 Opel Signum | |
| Make | BMW | Opel |
| Model | 745 | Signum |
| Year Released | 2001 | 2005 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 4398 cc | 1796 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 325 HP | 120 HP |
| Engine RPM | 6100 RPM | 6000 RPM |
| Torque | 450 Nm | 165 Nm |
| Torque RPM | 3600 RPM | 3800 RPM |
| Engine Bore Size | 92 mm | 80.5 mm |
| Engine Stroke Size | 82.7 mm | 88.2 mm |
| Engine Compression Ratio | 10.5:1 | 10.5:1 |
| Top Speed | 250 km/hour | 197 km/hour |
| Acceleration 0-100mph | 6.3 seconds | 12.2 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 | 1985 kg | 1482 kg |
| Vehicle Length | 5140 mm | 4640 mm |
| Vehicle Width | 1910 mm | 1800 mm |
| Vehicle Height | 1500 mm | 1470 mm |
| Wheelbase Size | 3140 mm | 2840 mm |
| Fuel Tank Capacity | 88 L | 60 L |
