2008 BMW 650 vs. 2009 BMW Z4
To start off, 2009 BMW Z4 is newer by 1 year(s). Which means there will be less support and parts availability for 2008 BMW 650. In addition, the cost of maintenance, including insurance, on 2008 BMW 650 would be higher. At 4,799 cc (8 cylinders), 2008 BMW 650 is equipped with a bigger engine. In terms of performance, 2008 BMW 650 (360 HP @ 6300 RPM) has 25 more horse power than 2009 BMW Z4. (335 HP @ 7900 RPM). In normal driving conditions, 2008 BMW 650 should accelerate faster than 2009 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2008 BMW 650 weights approximately 329 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, 2008 BMW 650 (488 Nm @ 3400 RPM) has 173 more torque (in Nm) than 2009 BMW Z4. (315 Nm @ 2750 RPM). This means 2008 BMW 650 will have an easier job in driving up hills or pulling heavy equipment than 2009 BMW Z4.
Compare all specifications:
| 2008 BMW 650 | 2009 BMW Z4 | |
| Make | BMW | BMW |
| Model | 650 | Z4 |
| Year Released | 2008 | 2009 |
| Body Type | Convertible | Convertible |
| Engine Position | Front | Front |
| Engine Size | 4799 cc | 2979 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 360 HP | 335 HP |
| Engine RPM | 6300 RPM | 7900 RPM |
| Torque | 488 Nm | 315 Nm |
| Torque RPM | 3400 RPM | 2750 RPM |
| Fuel Type | Gasoline | Gasoline |
| Top Speed | 250 km/hour | 250 km/hour |
| Acceleration 0-100mph | 5.7 seconds | 6.2 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1854 kg | 1525 kg |
| Vehicle Length | 4840 mm | 4100 mm |
| Vehicle Width | 1860 mm | 1790 mm |
| Vehicle Height | 1380 mm | 1310 mm |
| Wheelbase Size | 2790 mm | 2500 mm |
| Fuel Consumption Overall | 14.7 L/100km | 9.1 L/100km |
| Fuel Tank Capacity | 70 L | 55 L |
