1999 BMW 730 vs. 2007 BMW 523
To start off, 2007 BMW 523 is newer by 8 year(s). Which means there will be less support and parts availability for 1999 BMW 730. In addition, the cost of maintenance, including insurance, on 1999 BMW 730 would be higher. At 2,793 cc (6 cylinders), 1999 BMW 730 is equipped with a bigger engine. In terms of performance, 1999 BMW 730 (190 HP @ 5300 RPM) has 15 more horse power than 2007 BMW 523. (175 HP @ 5800 RPM). In normal driving conditions, 1999 BMW 730 should accelerate faster than 2007 BMW 523. With that said, vehicle weight also plays an important factor in acceleration. 1999 BMW 730 weights approximately 181 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, 1999 BMW 730 (280 Nm @ 3950 RPM) has 50 more torque (in Nm) than 2007 BMW 523. (230 Nm @ 3500 RPM). This means 1999 BMW 730 will have an easier job in driving up hills or pulling heavy equipment than 2007 BMW 523.
Compare all specifications:
| 1999 BMW 730 | 2007 BMW 523 | |
| Make | BMW | BMW |
| Model | 730 | 523 |
| Year Released | 1999 | 2007 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2793 cc | 2497 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 190 HP | 175 HP |
| Engine RPM | 5300 RPM | 5800 RPM |
| Torque | 280 Nm | 230 Nm |
| Torque RPM | 3950 RPM | 3500 RPM |
| Engine Bore Size | 84 mm | 78.8 mm |
| Engine Stroke Size | 84 mm | 82 mm |
| Engine Compression Ratio | 10.2:1 | 11.0:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1746 kg | 1565 kg |
| Vehicle Length | 5130 mm | 4850 mm |
| Vehicle Width | 1870 mm | 1850 mm |
| Vehicle Height | 1430 mm | 1470 mm |
| Wheelbase Size | 2940 mm | 2890 mm |
| Fuel Tank Capacity | 90 L | 70 L |
