2005 BMW 525 vs. 2006 BMW 730
To start off, 2006 BMW 730 is newer by 1 year(s). Which means there will be less support and parts availability for 2005 BMW 525. In addition, the cost of maintenance, including insurance, on 2005 BMW 525 would be higher. At 2,991 cc (6 cylinders), 2006 BMW 730 is equipped with a bigger engine. In terms of performance, 2006 BMW 730 (228 HP @ 4000 RPM) has 37 more horse power than 2005 BMW 525. (191 HP @ 6000 RPM) In normal driving conditions, 2006 BMW 730 should accelerate faster than 2005 BMW 525. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW 730 weights approximately 475 kg more than 2005 BMW 525. 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, 2006 BMW 730 (520 Nm @ 2000 RPM) has 275 more torque (in Nm) than 2005 BMW 525. (245 Nm @ 3500 RPM). This means 2006 BMW 730 will have an easier job in driving up hills or pulling heavy equipment than 2005 BMW 525. 2005 BMW 525 has automatic transmission and 2006 BMW 730 has manual transmission. 2006 BMW 730 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2005 BMW 525 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2005 BMW 525 | 2006 BMW 730 | |
| Make | BMW | BMW |
| Model | 525 | 730 |
| Year Released | 2005 | 2006 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2494 cc | 2991 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 191 HP | 228 HP |
| Engine RPM | 6000 RPM | 4000 RPM |
| Torque | 245 Nm | 520 Nm |
| Torque RPM | 3500 RPM | 2000 RPM |
| Engine Compression Ratio | 10.5:1 | 18.0:1 |
| Fuel Type | Gasoline - Premium | Diesel |
| Top Speed | 230 km/hour | 238 km/hour |
| Acceleration 0-100mph | 8.7 seconds | 7.8 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 | 1500 kg | 1975 kg |
| Vehicle Length | 4850 mm | 5050 mm |
| Vehicle Width | 1850 mm | 1910 mm |
| Vehicle Height | 1470 mm | 1500 mm |
| Wheelbase Size | 2830 mm | 3000 mm |
| Fuel Consumption Overall | 9.4 L/100km | 8.2 L/100km |
| Fuel Tank Capacity | 70 L | 88 L |
