2005 BMW 645 vs. 2005 Opel Signum
To start off, both 2005 BMW 645 and 2005 Opel Signum were released in the same year (2005). Therefore the support and the availability on parts for both vehicles should be relatively similar. At 4,390 cc (8 cylinders), 2005 BMW 645 is equipped with a bigger engine. In terms of performance, 2005 BMW 645 (338 HP @ 6100 RPM) has 130 more horse power than 2005 Opel Signum. (208 HP @ 6000 RPM). In normal driving conditions, 2005 BMW 645 should accelerate faster than 2005 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2005 BMW 645 weights approximately 105 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 2005 BMW 645 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 645. 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, 2005 BMW 645 (439 Nm @ 3600 RPM) has 139 more torque (in Nm) than 2005 Opel Signum. (300 Nm @ 4000 RPM). This means 2005 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2005 Opel Signum. 2005 Opel Signum has automatic transmission and 2005 BMW 645 has manual transmission. 2005 BMW 645 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2005 Opel Signum will be easier to drive especially in heavy traffic.
Compare all specifications:
2005 BMW 645 | 2005 Opel Signum | |
Make | BMW | Opel |
Model | 645 | Signum |
Year Released | 2005 | 2005 |
Body Type | Coupe | Hatchback |
Engine Position | Front | Front |
Engine Size | 4390 cc | 3174 cc |
Engine Cylinders | 8 cylinders | 6 cylinders |
Engine Type | V | V |
Valves per Cylinder | 4 valves | 4 valves |
Horse Power | 338 HP | 208 HP |
Engine RPM | 6100 RPM | 6000 RPM |
Torque | 439 Nm | 300 Nm |
Torque RPM | 3600 RPM | 4000 RPM |
Engine Bore Size | 92 mm | 87.5 mm |
Engine Stroke Size | 83 mm | 88 mm |
Engine Compression Ratio | 10.5:1 | 10.0:1 |
Fuel Type | Gasoline - Premium | Gasoline - Premium |
Top Speed | 250 km/hour | 237 km/hour |
Acceleration 0-100mph | 5.6 seconds | 7.9 seconds |
Drive Type | Rear | Front |
Transmission Type | Manual | Automatic |
Number of Seats | 4 seats | 5 seats |
Number of Doors | 2 doors | 5 doors |
Vehicle Weight | 1715 kg | 1610 kg |
Vehicle Length | 4830 mm | 4640 mm |
Vehicle Width | 1860 mm | 1800 mm |
Vehicle Height | 1380 mm | 1470 mm |
Wheelbase Size | 2790 mm | 2840 mm |
Fuel Consumption Overall | 11.8 L/100km | 10.1 L/100km |
Fuel Tank Capacity | 70 L | 60 L |