2009 BMW 650 vs. 2010 BMW Z4
To start off, 2010 BMW Z4 is newer by 1 year(s). Which means there will be less support and parts availability for 2009 BMW 650. In addition, the cost of maintenance, including insurance, on 2009 BMW 650 would be higher. At 4,799 cc (8 cylinders), 2009 BMW 650 is equipped with a bigger engine. In terms of performance, 2009 BMW 650 (362 HP @ 6300 RPM) has 107 more horse power than 2010 BMW Z4. (255 HP @ 6600 RPM). In normal driving conditions, 2009 BMW 650 should accelerate faster than 2010 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2010 BMW Z4 weights approximately 85 kg more than 2009 BMW 650.
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 650 (490 Nm @ 3400 RPM) has 192 more torque (in Nm) than 2010 BMW Z4. (298 Nm @ 2600 RPM). This means 2009 BMW 650 will have an easier job in driving up hills or pulling heavy equipment than 2010 BMW Z4.
Compare all specifications:
| 2009 BMW 650 | 2010 BMW Z4 | |
| Make | BMW | BMW |
| Model | 650 | Z4 |
| Year Released | 2009 | 2010 |
| Body Type | Coupe | Convertible |
| Engine Position | Front | Front |
| Engine Size | 4799 cc | 3000 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 362 HP | 255 HP |
| Engine RPM | 6300 RPM | 6600 RPM |
| Torque | 490 Nm | 298 Nm |
| Torque RPM | 3400 RPM | 2600 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1385 kg | 1470 kg |
| Vehicle Length | 4830 mm | 4239 mm |
| Vehicle Width | 1380 mm | 1791 mm |
| Vehicle Height | 1860 mm | 1290 mm |
| Wheelbase Size | 2790 mm | 2497 mm |
| Fuel Tank Capacity | 70 L | 55 L |
