2008 BMW 550 vs. 2013 BMW X6
To start off, 2013 BMW X6 is newer by 5 year(s). Which means there will be less support and parts availability for 2008 BMW 550. In addition, the cost of maintenance, including insurance, on 2008 BMW 550 would be higher. At 4,799 cc, 2008 BMW 550 is equipped with a bigger engine. In terms of performance, 2008 BMW 550 (360 HP @ 6300 RPM) has 64 more horse power than 2013 BMW X6. (296 HP @ 5500 RPM). In normal driving conditions, 2008 BMW 550 should accelerate faster than 2013 BMW X6. With that said, vehicle weight also plays an important factor in acceleration. 2013 BMW X6 weights approximately 710 kg more than 2008 BMW 550.
Because 2013 BMW X6 is all wheel drive (AWD), it will have significant more traction and grip than 2008 BMW 550. In wet, icy, snow, or gravel driving conditions, 2013 BMW X6 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, 2013 BMW X6 (610 Nm @ 4500 RPM) has 120 more torque (in Nm) than 2008 BMW 550. (490 Nm @ 3400 RPM). This means 2013 BMW X6 will have an easier job in driving up hills or pulling heavy equipment than 2008 BMW 550.
Compare all specifications:
| 2008 BMW 550 | 2013 BMW X6 | |
| Make | BMW | BMW |
| Model | 550 | X6 |
| Year Released | 2008 | 2013 |
| Engine Position | Front | Front |
| Engine Size | 4799 cc | 4395 cc |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 360 HP | 296 HP |
| Engine RPM | 6300 RPM | 5500 RPM |
| Torque | 490 Nm | 610 Nm |
| Torque RPM | 3400 RPM | 4500 RPM |
| Engine Bore Size | 93 mm | 89 mm |
| Engine Stroke Size | 88.3 mm | 88 mm |
| Engine Compression Ratio | 10.5:1 | 10.0 : 1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | AWD |
| Transmission Type | Automatic | 8-speed automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1660 kg | 2370 kg |
| Vehicle Length | 4870 mm | 4877 mm |
| Vehicle Height | 1470 mm | 1690 mm |
| Wheelbase Size | 2890 mm | 2933 mm |
| Fuel Tank Capacity | 70 L | 85 L |
