2003 Alpina Roadster vs. 2007 BMW X5
To start off, 2007 BMW X5 is newer by 4 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 3,346 cc (6 cylinders), 2003 Alpina Roadster is equipped with a bigger engine. In terms of performance, 2003 Alpina Roadster (301 HP @ 6300 RPM) has 99 more horse power than 2007 BMW X5. (202 HP @ 4000 RPM). In normal driving conditions, 2003 Alpina Roadster should accelerate faster than 2007 BMW X5. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW X5 weights approximately 529 kg more than 2003 Alpina Roadster.
Because 2007 BMW X5 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, 2007 BMW X5 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, 2007 BMW X5 (480 Nm @ 2000 RPM) has 118 more torque (in Nm) than 2003 Alpina Roadster. (362 Nm @ 4800 RPM). This means 2007 BMW X5 will have an easier job in driving up hills or pulling heavy equipment than 2003 Alpina Roadster. 2007 BMW X5 has automatic transmission and 2003 Alpina Roadster has manual transmission. 2003 Alpina Roadster will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 BMW X5 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2003 Alpina Roadster | 2007 BMW X5 | |
| Make | Alpina | BMW |
| Model | Roadster | X5 |
| Year Released | 2003 | 2007 |
| Body Type | Convertible | SUV |
| Engine Position | Front | Front |
| Engine Size | 3346 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 | 202 HP |
| Engine RPM | 6300 RPM | 4000 RPM |
| Torque | 362 Nm | 480 Nm |
| Torque RPM | 4800 RPM | 2000 RPM |
| Engine Bore Size | 87 mm | 84 mm |
| Engine Stroke Size | 93.8 mm | 88 mm |
| Engine Compression Ratio | 10.0:1 | 18.0:1 |
| Fuel Type | Gasoline - Premium | Diesel |
| Acceleration 0-100mph | 5.4 seconds | 10.1 seconds |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1626 kg | 2155 kg |
| Vehicle Length | 4100 mm | 4670 mm |
| Vehicle Width | 1790 mm | 1880 mm |
| Vehicle Height | 1310 mm | 1720 mm |
| Wheelbase Size | 2500 mm | 2830 mm |
| Fuel Consumption Overall | 11.7 L/100km | 8.6 L/100km |
| Fuel Tank Capacity | 55 L | 93 L |
