2008 BMW Z4 vs. 2009 BMW 730
To start off, 2009 BMW 730 is newer by 1 year(s). Which means there will be less support and parts availability for 2008 BMW Z4. In addition, the cost of maintenance, including insurance, on 2008 BMW Z4 would be higher. At 3,246 cc (6 cylinders), 2008 BMW Z4 is equipped with a bigger engine. In terms of performance, 2008 BMW Z4 (338 HP @ 7900 RPM) has 96 more horse power than 2009 BMW 730. (242 HP @ 4000 RPM). In normal driving conditions, 2008 BMW Z4 should accelerate faster than 2009 BMW 730. With that said, vehicle weight also plays an important factor in acceleration. 2009 BMW 730 weights approximately 380 kg more than 2008 BMW Z4.
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, 2009 BMW 730 (540 Nm @ 1750 RPM) has 175 more torque (in Nm) than 2008 BMW Z4. (365 Nm @ 4900 RPM). This means 2009 BMW 730 will have an easier job in driving up hills or pulling heavy equipment than 2008 BMW Z4. 2009 BMW 730 has automatic transmission and 2008 BMW Z4 has manual transmission. 2008 BMW Z4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 BMW 730 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2008 BMW Z4 | 2009 BMW 730 | |
| Make | BMW | BMW |
| Model | Z4 | 730 |
| Year Released | 2008 | 2009 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 3246 cc | 2993 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 338 HP | 242 HP |
| Engine RPM | 7900 RPM | 4000 RPM |
| Torque | 365 Nm | 540 Nm |
| Torque RPM | 4900 RPM | 1750 RPM |
| Engine Compression Ratio | 11.5:1 | 16.5:1 |
| Fuel Type | Gasoline | Diesel |
| Top Speed | 250 km/hour | 240 km/hour |
| Acceleration 0-100mph | 5 seconds | 7.2 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1485 kg | 1865 kg |
| Vehicle Length | 4870 mm | 5080 mm |
| Vehicle Height | 1480 mm | 1490 mm |
| Wheelbase Size | 2500 mm | 3080 mm |
| Fuel Consumption Overall | 12.1 L/100km | 7.2 L/100km |
| Fuel Tank Capacity | 70 L | 80 L |
