2009 BMW 730 vs. 2007 BMW 523
To start off, 2009 BMW 730 is newer by 2 year(s). Which means there will be less support and parts availability for 2007 BMW 523. In addition, the cost of maintenance, including insurance, on 2007 BMW 523 would be higher. At 2,993 cc (6 cylinders), 2009 BMW 730 is equipped with a bigger engine. In terms of performance, 2009 BMW 730 (242 HP @ 4000 RPM) has 67 more horse power than 2007 BMW 523. (175 HP @ 5800 RPM). In normal driving conditions, 2009 BMW 730 should accelerate faster than 2007 BMW 523. With that said, vehicle weight also plays an important factor in acceleration. 2009 BMW 730 weights approximately 300 kg more than 2007 BMW 523. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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 730 (540 Nm @ 1750 RPM) has 310 more torque (in Nm) than 2007 BMW 523. (230 Nm @ 3500 RPM). This means 2009 BMW 730 will have an easier job in driving up hills or pulling heavy equipment than 2007 BMW 523. 2009 BMW 730 has automatic transmission and 2007 BMW 523 has manual transmission. 2007 BMW 523 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 BMW 730 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 BMW 730 | 2007 BMW 523 | |
| Make | BMW | BMW |
| Model | 730 | 523 |
| Year Released | 2009 | 2007 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2993 cc | 2497 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 242 HP | 175 HP |
| Engine RPM | 4000 RPM | 5800 RPM |
| Torque | 540 Nm | 230 Nm |
| Torque RPM | 1750 RPM | 3500 RPM |
| Engine Compression Ratio | 16.5:1 | 11.0:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Top Speed | 240 km/hour | 235 km/hour |
| Acceleration 0-100mph | 7.2 seconds | 8.8 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1865 kg | 1565 kg |
| Vehicle Length | 5080 mm | 4850 mm |
| Vehicle Width | 1910 mm | 1850 mm |
| Vehicle Height | 1490 mm | 1470 mm |
| Wheelbase Size | 3080 mm | 2890 mm |
| Fuel Consumption Overall | 7.2 L/100km | 8.5 L/100km |
| Fuel Tank Capacity | 80 L | 70 L |
