2003 Alpina B3 vs. 2012 BMW 640
To start off, 2012 BMW 640 is newer by 9 year(s). Which means there will be less support and parts availability for 2003 Alpina B3. In addition, the cost of maintenance, including insurance, on 2003 Alpina B3 would be higher. At 3,344 cc (6 cylinders), 2003 Alpina B3 is equipped with a bigger engine. In terms of performance, 2012 BMW 640 (311 HP @ 4400 RPM) has 10 more horse power than 2003 Alpina B3. (301 HP @ 6200 RPM) In normal driving conditions, 2012 BMW 640 should accelerate faster than 2003 Alpina B3. With that said, vehicle weight also plays an important factor in acceleration. 2012 BMW 640 weights approximately 290 kg more than 2003 Alpina B3. 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, 2012 BMW 640 (630 Nm @ 1500 RPM) has 268 more torque (in Nm) than 2003 Alpina B3. (362 Nm @ 4800 RPM). This means 2012 BMW 640 will have an easier job in driving up hills or pulling heavy equipment than 2003 Alpina B3.
Compare all specifications:
| 2003 Alpina B3 | 2012 BMW 640 | |
| Make | Alpina | BMW |
| Model | B3 | 640 |
| Year Released | 2003 | 2012 |
| Body Type | Convertible | Convertible |
| Engine Position | Front | Front |
| Engine Size | 3344 cc | 2993 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 301 HP | 311 HP |
| Engine RPM | 6200 RPM | 4400 RPM |
| Torque | 362 Nm | 630 Nm |
| Torque RPM | 4800 RPM | 1500 RPM |
| Engine Bore Size | 87 mm | 90 mm |
| Engine Stroke Size | 93.8 mm | 84 mm |
| Fuel Type | Gasoline | Diesel |
| Drive Type | Rear | Rear |
| Number of Seats | 4 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1645 kg | 1935 kg |
| Vehicle Length | 4490 mm | 4894 mm |
| Vehicle Width | 1760 mm | 1894 mm |
| Vehicle Height | 1360 mm | 1365 mm |
| Wheelbase Size | 2730 mm | 2855 mm |
| Fuel Tank Capacity | 63 L | 70 L |
