2005 BMW 730 vs. 2006 BMW 320
To start off, 2006 BMW 320 is newer by 1 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 2,993 cc (6 cylinders), 2005 BMW 730 is equipped with a bigger engine. In terms of performance, 2005 BMW 730 (228 HP @ 5900 RPM) has 80 more horse power than 2006 BMW 320. (148 HP @ 4000 RPM). In normal driving conditions, 2005 BMW 730 should accelerate faster than 2006 BMW 320. With that said, vehicle weight also plays an important factor in acceleration. 2005 BMW 730 weights approximately 244 kg more than 2006 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, 2006 BMW 320 (330 Nm @ 2000 RPM) has 30 more torque (in Nm) than 2005 BMW 730. (300 Nm @ 3500 RPM). This means 2006 BMW 320 will have an easier job in driving up hills or pulling heavy equipment than 2005 BMW 730.
Compare all specifications:
| 2005 BMW 730 | 2006 BMW 320 | |
| Make | BMW | BMW |
| Model | 730 | 320 |
| Year Released | 2005 | 2006 |
| Body Type | Sedan | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 2993 cc | 1994 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 228 HP | 148 HP |
| Engine RPM | 5900 RPM | 4000 RPM |
| Torque | 300 Nm | 330 Nm |
| Torque RPM | 3500 RPM | 2000 RPM |
| Engine Bore Size | 84 mm | 84 mm |
| Engine Stroke Size | 89.6 mm | 90 mm |
| Engine Compression Ratio | 10.0:1 | 17.0:1 |
| Fuel Type | Gasoline - Premium | Diesel |
| Top Speed | 237 km/hour | 216 km/hour |
| Acceleration 0-100mph | 8.3 seconds | 9.2 seconds |
| Drive Type | Rear | Rear |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1824 kg | 1580 kg |
| Vehicle Length | 5190 mm | 4480 mm |
| Vehicle Width | 1910 mm | 1750 mm |
| Vehicle Height | 1490 mm | 1420 mm |
| Wheelbase Size | 3140 mm | 2730 mm |
| Fuel Consumption Overall | 10.1 L/100km | 6 L/100km |
| Fuel Tank Capacity | 88 L | 63 L |
