2003 Alpina B7 vs. 2007 BMW Convertible
To start off, 2007 BMW Convertible is newer by 4 year(s). Which means there will be less support and parts availability for 2003 Alpina B7. In addition, the cost of maintenance, including insurance, on 2003 Alpina B7 would be higher. At 4,799 cc (8 cylinders), 2007 BMW Convertible is equipped with a bigger engine. In terms of performance, 2003 Alpina B7 (492 HP @ 5500 RPM) has 130 more horse power than 2007 BMW Convertible. (362 HP @ 6300 RPM). In normal driving conditions, 2003 Alpina B7 should accelerate faster than 2007 BMW Convertible. With that said, vehicle weight also plays an important factor in acceleration. 2003 Alpina B7 weights approximately 140 kg more than 2007 BMW Convertible. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2003 Alpina B7 (700 Nm @ 4250 RPM) has 210 more torque (in Nm) than 2007 BMW Convertible. (490 Nm @ 3400 RPM). This means 2003 Alpina B7 will have an easier job in driving up hills or pulling heavy equipment than 2007 BMW Convertible.
Compare all specifications:
| 2003 Alpina B7 | 2007 BMW Convertible | |
| Make | Alpina | BMW |
| Model | B7 | Convertible |
| Year Released | 2003 | 2007 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 4399 cc | 4799 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 492 HP | 362 HP |
| Engine RPM | 5500 RPM | 6300 RPM |
| Torque | 700 Nm | 490 Nm |
| Torque RPM | 4250 RPM | 3400 RPM |
| Engine Compression Ratio | 9.0:1 | 10.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Acceleration 0-100mph | 5.5 seconds | 5.7 seconds |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1990 kg | 1850 kg |
| Vehicle Length | 5180 mm | 4830 mm |
| Vehicle Width | 1910 mm | 1380 mm |
| Vehicle Height | 1450 mm | 1860 mm |
| Wheelbase Size | 3000 mm | 2790 mm |
| Fuel Tank Capacity | 88 L | 70 L |
