2005 BMW 730 vs. 2009 BMW Z4
To start off, 2009 BMW Z4 is newer by 4 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 2,977 cc (6 cylinders), 2005 BMW 730 is equipped with a bigger engine. In terms of performance, 2005 BMW 730 (254 HP @ 6600 RPM) has 39 more horse power than 2009 BMW Z4. (215 HP @ 6500 RPM). In normal driving conditions, 2005 BMW 730 should accelerate faster than 2009 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2005 BMW 730 weights approximately 573 kg more than 2009 BMW Z4. 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 (300 Nm @ 2500 RPM) has 50 more torque (in Nm) than 2009 BMW Z4. (250 Nm @ 2750 RPM). This means 2005 BMW 730 will have an easier job in driving up hills or pulling heavy equipment than 2009 BMW Z4.
Compare all specifications:
| 2005 BMW 730 | 2009 BMW Z4 | |
| Make | BMW | BMW |
| Model | 730 | Z4 |
| Year Released | 2005 | 2009 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 2977 cc | 2497 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 254 HP | 215 HP |
| Engine RPM | 6600 RPM | 6500 RPM |
| Torque | 300 Nm | 250 Nm |
| Torque RPM | 2500 RPM | 2750 RPM |
| Engine Bore Size | 85 mm | 82 mm |
| Engine Stroke Size | 88 mm | 78.8 mm |
| Engine Compression Ratio | 10.7:1 | 11.0:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 244 km/hour | 240 km/hour |
| Acceleration 0-100mph | 7.8 seconds | 7 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1935 kg | 1362 kg |
| Vehicle Length | 5040 mm | 4100 mm |
| Vehicle Width | 1910 mm | 1310 mm |
| Vehicle Height | 1500 mm | 1790 mm |
| Wheelbase Size | 2840 mm | 2500 mm |
| Fuel Consumption Overall | 10.7 L/100km | 8.4 L/100km |
| Fuel Tank Capacity | 88 L | 55 L |
