2005 BMW 730 vs. 2007 BMW 320
To start off, 2007 BMW 320 is newer by 2 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 2,979 cc (6 cylinders), 2005 BMW 730 is equipped with a bigger engine. In terms of performance, 2005 BMW 730 (225 HP @ 4000 RPM) has 71 more horse power than 2007 BMW 320. (154 HP @ 4000 RPM). In normal driving conditions, 2005 BMW 730 should accelerate faster than 2007 BMW 320. With that said, vehicle weight also plays an important factor in acceleration. 2005 BMW 730 weights approximately 515 kg more than 2007 BMW 320. 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, 2005 BMW 730 (500 Nm @ 2000 RPM) has 170 more torque (in Nm) than 2007 BMW 320. (330 Nm @ 2000 RPM). This means 2005 BMW 730 will have an easier job in driving up hills or pulling heavy equipment than 2007 BMW 320.
Compare all specifications:
| 2005 BMW 730 | 2007 BMW 320 | |
| Make | BMW | BMW |
| Model | 730 | 320 |
| Year Released | 2005 | 2007 |
| Body Type | Sedan | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 2979 cc | 1995 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 225 HP | 154 HP |
| Engine RPM | 4000 RPM | 4000 RPM |
| Torque | 500 Nm | 330 Nm |
| Torque RPM | 2000 RPM | 2000 RPM |
| Engine Bore Size | 84.1 mm | 84 mm |
| Engine Stroke Size | 90 mm | 90 mm |
| Engine Compression Ratio | 18.0:1 | 17.0:1 |
| Fuel Type | Diesel | Diesel |
| Acceleration 0-100mph | 8 seconds | 8.6 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1975 kg | 1460 kg |
| Vehicle Length | 5050 mm | 4530 mm |
| Vehicle Width | 1910 mm | 1420 mm |
| Vehicle Height | 1500 mm | 1820 mm |
| Wheelbase Size | 2890 mm | 2770 mm |
| Fuel Consumption Overall | 8.2 L/100km | 7.7 L/100km |
| Fuel Tank Capacity | 88 L | 63 L |
