2009 BMW 550 vs. 2006 BMW 525
To start off, 2009 BMW 550 is newer by 3 year(s). Which means there will be less support and parts availability for 2006 BMW 525. In addition, the cost of maintenance, including insurance, on 2006 BMW 525 would be higher. At 4,799 cc, 2009 BMW 550 is equipped with a bigger engine. In terms of performance, 2009 BMW 550 (362 HP @ 6300 RPM) has 147 more horse power than 2006 BMW 525. (215 HP @ 6500 RPM). In normal driving conditions, 2009 BMW 550 should accelerate faster than 2006 BMW 525. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW 525 weights approximately 18 kg more than 2009 BMW 550.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front wheel drive vehicles. 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 BMW 550 (490 Nm @ 3400 RPM) has 239 more torque (in Nm) than 2006 BMW 525. (251 Nm @ 2750 RPM). This means 2009 BMW 550 will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW 525.
Compare all specifications:
| 2009 BMW 550 | 2006 BMW 525 | |
| Make | BMW | BMW |
| Model | 550 | 525 |
| Year Released | 2009 | 2006 |
| Engine Position | Front | Front |
| Engine Size | 4799 cc | 2497 cc |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 362 HP | 215 HP |
| Engine RPM | 6300 RPM | 6500 RPM |
| Torque | 490 Nm | 251 Nm |
| Torque RPM | 3400 RPM | 2750 RPM |
| Engine Bore Size | 93 mm | 78.8 mm |
| Engine Stroke Size | 88.3 mm | 82 mm |
| Fuel Type | Gasoline | Gasoline - Premium |
| Top Speed | 250 km/hour | 240 km/hour |
| Acceleration 0-100mph | 5.9 seconds | 7.8 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1662 kg | 1680 kg |
| Vehicle Length | 4850 mm | 4850 mm |
| Vehicle Width | 1470 mm | 1850 mm |
| Vehicle Height | 1850 mm | 1500 mm |
| Wheelbase Size | 2890 mm | 2840 mm |
| Fuel Consumption Overall | 11.1 L/100km | 8.9 L/100km |
| Fuel Tank Capacity | 70 L | 70 L |
