2003 BMW X5 vs. 2011 BMW X6
To start off, 2011 BMW X6 is newer by 8 year(s). Which means there will be less support and parts availability for 2003 BMW X5. In addition, the cost of maintenance, including insurance, on 2003 BMW X5 would be higher. At 4,400 cc (8 cylinders), 2011 BMW X6 is equipped with a bigger engine. In terms of performance, 2011 BMW X6 (480 HP @ 5500 RPM) has 265 more horse power than 2003 BMW X5. (215 HP @ 4000 RPM) In normal driving conditions, 2011 BMW X6 should accelerate faster than 2003 BMW X5. With that said, vehicle weight also plays an important factor in acceleration. 2011 BMW X6 weights approximately 435 kg more than 2003 BMW X5. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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, 2011 BMW X6 (779 Nm @ 1750 RPM) has 279 more torque (in Nm) than 2003 BMW X5. (500 Nm @ 2000 RPM). This means 2011 BMW X6 will have an easier job in driving up hills or pulling heavy equipment than 2003 BMW X5.
Compare all specifications:
| 2003 BMW X5 | 2011 BMW X6 | |
| Make | BMW | BMW |
| Model | X5 | X6 |
| Year Released | 2003 | 2011 |
| Body Type | SUV | SUV |
| Engine Position | Front | Front |
| Engine Size | 2983 cc | 4400 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 215 HP | 480 HP |
| Engine RPM | 4000 RPM | 5500 RPM |
| Torque | 500 Nm | 779 Nm |
| Torque RPM | 2000 RPM | 1750 RPM |
| Drive Type | 4WD | AWD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 2180 kg | 2615 kg |
| Vehicle Length | 4670 mm | 4879 mm |
| Vehicle Width | 1880 mm | 1984 mm |
| Vehicle Height | 1720 mm | 1689 mm |
| Wheelbase Size | 2840 mm | 2934 mm |
| Fuel Consumption | 8 L/100km | 12.4 L/100km |
| Fuel Consumption City | 12 L/100km | 13.8 L/100km |
| Fuel Tank Capacity | 93 L | 85 L |
