2003 BMW X3 vs. 2007 Porsche 911
To start off, 2007 Porsche 911 is newer by 4 year(s). Which means there will be less support and parts availability for 2003 BMW X3. In addition, the cost of maintenance, including insurance, on 2003 BMW X3 would be higher. At 3,824 cc (6 cylinders), 2007 Porsche 911 is equipped with a bigger engine. In terms of performance, 2007 Porsche 911 (350 HP @ 6600 RPM) has 149 more horse power than 2003 BMW X3. (201 HP @ 4000 RPM) In normal driving conditions, 2007 Porsche 911 should accelerate faster than 2003 BMW X3. With that said, vehicle weight also plays an important factor in acceleration. 2003 BMW X3 weights approximately 425 kg more than 2007 Porsche 911.
Because 2003 BMW X3 is four wheel drive (4WD), it will have significant more traction and grip than 2007 Porsche 911. In wet, icy, snow, or gravel driving conditions, 2003 BMW X3 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, 2003 BMW X3 (410 Nm @ 1500 RPM) has 10 more torque (in Nm) than 2007 Porsche 911. (400 Nm @ 4600 RPM). This means 2003 BMW X3 will have an easier job in driving up hills or pulling heavy equipment than 2007 Porsche 911.
Compare all specifications:
| 2003 BMW X3 | 2007 Porsche 911 | |
| Make | BMW | Porsche |
| Model | X3 | 911 |
| Year Released | 2003 | 2007 |
| Body Type | SUV | Convertible |
| Engine Position | Front | Rear |
| Engine Size | 2995 cc | 3824 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | boxer |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 201 HP | 350 HP |
| Engine RPM | 4000 RPM | 6600 RPM |
| Torque | 410 Nm | 400 Nm |
| Torque RPM | 1500 RPM | 4600 RPM |
| Engine Bore Size | 84 mm | 99 mm |
| Engine Stroke Size | 90 mm | 82.8 mm |
| Engine Compression Ratio | 17.0:1 | 11.8:1 |
| Top Speed | 215 km/hour | 293 km/hour |
| Acceleration 0-100mph | 8.2 seconds | 4.9 seconds |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1930 kg | 1505 kg |
| Vehicle Length | 4570 mm | 4430 mm |
| Vehicle Width | 1860 mm | 1810 mm |
| Vehicle Height | 1680 mm | 1310 mm |
| Wheelbase Size | 2730 mm | 2360 mm |
| Fuel Consumption | 7.3 L/100km | 9.1 L/100km |
| Fuel Consumption City | 12.1 L/100km | 13.1 L/100km |
| Fuel Consumption Overall | 9.1 L/100km | 11.6 L/100km |
| Fuel Tank Capacity | 67 L | 64 L |
