2007 BMW 730 vs. 2006 BMW 320
To start off, 2007 BMW 730 is newer by 1 year(s). Which means there will be less support and parts availability for 2006 BMW 320. In addition, the cost of maintenance, including insurance, on 2006 BMW 320 would be higher. At 2,996 cc (6 cylinders), 2007 BMW 730 is equipped with a bigger engine. In terms of performance, 2007 BMW 730 (255 HP @ 6600 RPM) has 87 more horse power than 2006 BMW 320. (168 HP @ 6100 RPM). In normal driving conditions, 2007 BMW 730 should accelerate faster than 2006 BMW 320. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW 730 weights approximately 300 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, 2007 BMW 730 (300 Nm @ 2500 RPM) has 90 more torque (in Nm) than 2006 BMW 320. (210 Nm @ 3500 RPM). This means 2007 BMW 730 will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW 320.
Compare all specifications:
| 2007 BMW 730 | 2006 BMW 320 | |
| Make | BMW | BMW |
| Model | 730 | 320 |
| Year Released | 2007 | 2006 |
| Body Type | Sedan | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 2996 cc | 2171 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 255 HP | 168 HP |
| Engine RPM | 6600 RPM | 6100 RPM |
| Torque | 300 Nm | 210 Nm |
| Torque RPM | 2500 RPM | 3500 RPM |
| Engine Compression Ratio | 10.7:1 | 11.0:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Acceleration 0-100mph | 7.9 seconds | 8.5 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 | 1820 kg | 1520 kg |
| Vehicle Length | 5180 mm | 4480 mm |
| Vehicle Width | 1910 mm | 1750 mm |
| Vehicle Height | 1500 mm | 1420 mm |
| Wheelbase Size | 3140 mm | 2730 mm |
| Fuel Consumption Overall | 10.1 L/100km | 9 L/100km |
| Fuel Tank Capacity | 88 L | 63 L |
