2005 BMW 745 vs. 1999 Opel Signum
To start off, 2005 BMW 745 is newer by 6 year(s). Which means there will be less support and parts availability for 1999 Opel Signum. In addition, the cost of maintenance, including insurance, on 1999 Opel Signum would be higher. At 4,392 cc (8 cylinders), 2005 BMW 745 is equipped with a bigger engine. In terms of performance, 2005 BMW 745 (341 HP @ 6100 RPM) has 188 more horse power than 1999 Opel Signum. (153 HP @ 5600 RPM). In normal driving conditions, 2005 BMW 745 should accelerate faster than 1999 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2005 BMW 745 weights approximately 490 kg more than 1999 Opel Signum. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 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 2005 BMW 745. However, in wet, icy, snow, or gravel driving conditions, 1999 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, 2005 BMW 745 (447 Nm @ 3600 RPM) has 226 more torque (in Nm) than 1999 Opel Signum. (221 Nm @ 3800 RPM). This means 2005 BMW 745 will have an easier job in driving up hills or pulling heavy equipment than 1999 Opel Signum. 2005 BMW 745 has automatic transmission and 1999 Opel Signum has manual transmission. 1999 Opel Signum will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2005 BMW 745 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2005 BMW 745 | 1999 Opel Signum | |
| Make | BMW | Opel |
| Model | 745 | Signum |
| Year Released | 2005 | 1999 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 4392 cc | 2198 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 341 HP | 153 HP |
| Engine RPM | 6100 RPM | 5600 RPM |
| Torque | 447 Nm | 221 Nm |
| Torque RPM | 3600 RPM | 3800 RPM |
| Engine Bore Size | 92 mm | 86 mm |
| Engine Stroke Size | 83 mm | 94.6 mm |
| Acceleration 0-100mph | 6.3 seconds | 9.8 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 | 2025 kg | 1535 kg |
| Vehicle Length | 5180 mm | 4640 mm |
| Vehicle Width | 1910 mm | 1800 mm |
| Vehicle Height | 1500 mm | 1470 mm |
| Wheelbase Size | 3140 mm | 2640 mm |
| Fuel Tank Capacity | 88 L | 60 L |
