2005 Alpina B7 vs. 2003 BMW 645
To start off, 2005 Alpina B7 is newer by 2 year(s). Which means there will be less support and parts availability for 2003 BMW 645. In addition, the cost of maintenance, including insurance, on 2003 BMW 645 would be higher. Both 2005 Alpina B7 and 2003 BMW 645 are equipped with a 4,398 cc engine. In terms of performance, 2005 Alpina B7 (492 HP @ 5500 RPM) has 182 more horse power than 2003 BMW 645. (310 HP @ 6000 RPM). In normal driving conditions, 2005 Alpina B7 should accelerate faster than 2003 BMW 645. With that said, vehicle weight also plays an important factor in acceleration. 2005 Alpina B7 weights approximately 252 kg more than 2003 BMW 645. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front wheel drive vehicles. 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 Alpina B7 (700 Nm @ 4250 RPM) has 250 more torque (in Nm) than 2003 BMW 645. (450 Nm @ 3600 RPM). This means 2005 Alpina B7 will have an easier job in driving up hills or pulling heavy equipment than 2003 BMW 645.
Compare all specifications:
2005 Alpina B7 | 2003 BMW 645 | |
Make | Alpina | BMW |
Model | B7 | 645 |
Year Released | 2005 | 2003 |
Body Type | Sedan | Coupe |
Engine Position | Front | Front |
Engine Size | 4398 cc | 4398 cc |
Engine Cylinders | 8 cylinders | 8 cylinders |
Engine Type | V | V |
Valves per Cylinder | 4 valves | 4 valves |
Horse Power | 492 HP | 310 HP |
Engine RPM | 5500 RPM | 6000 RPM |
Torque | 700 Nm | 450 Nm |
Torque RPM | 4250 RPM | 3600 RPM |
Engine Bore Size | 92 mm | 92 mm |
Engine Stroke Size | 82.7 mm | 82.7 mm |
Engine Compression Ratio | 9.0:1 | 10.5:1 |
Top Speed | 300 km/hour | 250 km/hour |
Acceleration 0-100mph | 5.5 seconds | 5.9 seconds |
Drive Type | Rear | Rear |
Transmission Type | Automatic | Automatic |
Number of Seats | 5 seats | 4 seats |
Number of Doors | 4 doors | 2 doors |
Vehicle Weight | 1950 kg | 1698 kg |
Vehicle Length | 5040 mm | 4830 mm |
Vehicle Width | 1910 mm | 1860 mm |
Vehicle Height | 1480 mm | 1380 mm |
Wheelbase Size | 3000 mm | 2790 mm |
Fuel Tank Capacity | 88 L | 70 L |