2004 BMW 645 vs. 2011 Alpina B7
To start off, 2011 Alpina B7 is newer by 7 year(s). Which means there will be less support and parts availability for 2004 BMW 645. In addition, the cost of maintenance, including insurance, on 2004 BMW 645 would be higher. At 4,400 cc (8 cylinders), 2011 Alpina B7 is equipped with a bigger engine. In terms of performance, 2011 Alpina B7 (500 HP @ 5500 RPM) has 172 more horse power than 2004 BMW 645. (328 HP @ 6100 RPM) In normal driving conditions, 2011 Alpina B7 should accelerate faster than 2004 BMW 645. With that said, vehicle weight also plays an important factor in acceleration. 2011 Alpina B7 weights approximately 450 kg more than 2004 BMW 645. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2011 Alpina B7 is all wheel drive (AWD), it will have significant more traction and grip than 2004 BMW 645. In wet, icy, snow, or gravel driving conditions, 2011 Alpina B7 will offer significantly more control. 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, 2011 Alpina B7 (699 Nm @ 3000 RPM) has 249 more torque (in Nm) than 2004 BMW 645. (450 Nm @ 3600 RPM). This means 2011 Alpina B7 will have an easier job in driving up hills or pulling heavy equipment than 2004 BMW 645. 2011 Alpina B7 has automatic transmission and 2004 BMW 645 has manual transmission. 2004 BMW 645 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2011 Alpina B7 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2004 BMW 645 | 2011 Alpina B7 | |
| Make | BMW | Alpina |
| Model | 645 | B7 |
| Year Released | 2004 | 2011 |
| Body Type | Coupe | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4398 cc | 4400 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 328 HP | 500 HP |
| Engine RPM | 6100 RPM | 5500 RPM |
| Torque | 450 Nm | 699 Nm |
| Torque RPM | 3600 RPM | 3000 RPM |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Rear | AWD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1690 kg | 2140 kg |
| Vehicle Length | 4830 mm | 5085 mm |
| Vehicle Width | 1860 mm | 1902 mm |
| Vehicle Height | 1380 mm | 1483 mm |
| Wheelbase Size | 2830 mm | 3071 mm |
| Fuel Tank Capacity | 70 L | 82 L |
