2003 Alpina Roadster vs. 2009 Porsche 911
To start off, 2009 Porsche 911 is newer by 6 year(s). Which means there will be less support and parts availability for 2003 Alpina Roadster. In addition, the cost of maintenance, including insurance, on 2003 Alpina Roadster would be higher. At 3,599 cc (6 cylinders), 2009 Porsche 911 is equipped with a bigger engine. In terms of performance, 2009 Porsche 911 (473 HP @ 6000 RPM) has 172 more horse power than 2003 Alpina Roadster. (301 HP @ 6300 RPM) In normal driving conditions, 2009 Porsche 911 should accelerate faster than 2003 Alpina Roadster. With that said, vehicle weight also plays an important factor in acceleration. 2003 Alpina Roadster weights approximately 96 kg more than 2009 Porsche 911.
Because 2009 Porsche 911 is four wheel drive (4WD), it will have significant more traction and grip than 2003 Alpina Roadster. In wet, icy, snow, or gravel driving conditions, 2009 Porsche 911 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, 2009 Porsche 911 (620 Nm @ 2700 RPM) has 258 more torque (in Nm) than 2003 Alpina Roadster. (362 Nm @ 4800 RPM). This means 2009 Porsche 911 will have an easier job in driving up hills or pulling heavy equipment than 2003 Alpina Roadster.
Compare all specifications:
| 2003 Alpina Roadster | 2009 Porsche 911 | |
| Make | Alpina | Porsche |
| Model | Roadster | 911 |
| Year Released | 2003 | 2009 |
| Body Type | Convertible | Coupe |
| Engine Position | Front | Rear |
| Engine Size | 3346 cc | 3599 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | boxer |
| Horse Power | 301 HP | 473 HP |
| Engine RPM | 6300 RPM | 6000 RPM |
| Torque | 362 Nm | 620 Nm |
| Torque RPM | 4800 RPM | 2700 RPM |
| Engine Bore Size | 87 mm | 100 mm |
| Engine Stroke Size | 93.8 mm | 76.4 mm |
| Engine Compression Ratio | 10.0:1 | 9.4:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Acceleration 0-100mph | 5.4 seconds | 4.2 seconds |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1626 kg | 1530 kg |
| Vehicle Length | 4100 mm | 4440 mm |
| Vehicle Width | 1790 mm | 1300 mm |
| Vehicle Height | 1310 mm | 1840 mm |
| Wheelbase Size | 2500 mm | 2360 mm |
| Fuel Consumption Overall | 11.7 L/100km | 12.8 L/100km |
| Fuel Tank Capacity | 55 L | 64 L |
