2005 BMW 730 vs. 2009 BMW 550
To start off, 2009 BMW 550 is newer by 4 year(s). Which means there will be less support and parts availability for 2005 BMW 730. In addition, the cost of maintenance, including insurance, on 2005 BMW 730 would be higher. At 4,798 cc, 2009 BMW 550 is equipped with a bigger engine. In terms of performance, 2009 BMW 550 (362 HP @ 6300 RPM) has 137 more horse power than 2005 BMW 730. (225 HP @ 4000 RPM) In normal driving conditions, 2009 BMW 550 should accelerate faster than 2005 BMW 730. With that said, vehicle weight also plays an important factor in acceleration. 2005 BMW 730 weights approximately 315 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, 2005 BMW 730 (500 Nm @ 2000 RPM) has 10 more torque (in Nm) than 2009 BMW 550. (490 Nm @ 3400 RPM). This means 2005 BMW 730 will have an easier job in driving up hills or pulling heavy equipment than 2009 BMW 550.
Compare all specifications:
| 2005 BMW 730 | 2009 BMW 550 | |
| Make | BMW | BMW |
| Model | 730 | 550 |
| Year Released | 2005 | 2009 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2979 cc | 4798 cc |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 225 HP | 362 HP |
| Engine RPM | 4000 RPM | 6300 RPM |
| Torque | 500 Nm | 490 Nm |
| Torque RPM | 2000 RPM | 3400 RPM |
| Engine Bore Size | 84.1 mm | 93 mm |
| Engine Stroke Size | 90 mm | 88.3 mm |
| Engine Compression Ratio | 18.0:1 | 10.5:1 |
| Fuel Type | Diesel | Gasoline |
| Acceleration 0-100mph | 8 seconds | 5.9 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1975 kg | 1660 kg |
| Vehicle Length | 5050 mm | 4850 mm |
| Vehicle Width | 1910 mm | 1470 mm |
| Vehicle Height | 1500 mm | 1850 mm |
| Wheelbase Size | 2890 mm | 2890 mm |
| Fuel Consumption Overall | 8.2 L/100km | 7.8 L/100km |
| Fuel Tank Capacity | 88 L | 70 L |
