2006 Alpina Roadster vs. 2006 BMW 320
To start off, both 2006 Alpina Roadster and 2006 BMW 320 were released in the same year (2006). Therefore the support and the availability on parts for both vehicles should be relatively similar. At 3,346 cc (6 cylinders), 2006 Alpina Roadster is equipped with a bigger engine. In terms of performance, 2006 Alpina Roadster (296 HP @ 6300 RPM) has 148 more horse power than 2006 BMW 320. (148 HP @ 4000 RPM). In normal driving conditions, 2006 Alpina Roadster should accelerate faster than 2006 BMW 320. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW 320 weights approximately 285 kg more than 2006 Alpina Roadster.
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, 2006 Alpina Roadster (362 Nm @ 4800 RPM) has 32 more torque (in Nm) than 2006 BMW 320. (330 Nm @ 2000 RPM). This means 2006 Alpina Roadster will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW 320.
Compare all specifications:
| 2006 Alpina Roadster | 2006 BMW 320 | |
| Make | Alpina | BMW |
| Model | Roadster | 320 |
| Year Released | 2006 | 2006 |
| Body Type | Convertible | Convertible |
| Engine Position | Front | Front |
| Engine Size | 3346 cc | 1995 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 296 HP | 148 HP |
| Engine RPM | 6300 RPM | 4000 RPM |
| Torque | 362 Nm | 330 Nm |
| Torque RPM | 4800 RPM | 2000 RPM |
| Engine Bore Size | 87 mm | 84 mm |
| Engine Stroke Size | 93.8 mm | 90 mm |
| Engine Compression Ratio | 10.0:1 | 17.0:1 |
| Fuel Type | Gasoline - Premium | Diesel |
| Top Speed | 265 km/hour | 211 km/hour |
| Acceleration 0-100mph | 5.7 seconds | 9.7 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1395 kg | 1680 kg |
| Vehicle Length | 4100 mm | 4490 mm |
| Vehicle Width | 1790 mm | 1760 mm |
| Vehicle Height | 1310 mm | 1380 mm |
| Wheelbase Size | 2500 mm | 2730 mm |
| Fuel Consumption Overall | 11.7 L/100km | 6.5 L/100km |
| Fuel Tank Capacity | 55 L | 63 L |
