2007 BMW Z4 vs. 2010 BMW 550
To start off, 2010 BMW 550 is newer by 3 year(s). Which means there will be less support and parts availability for 2007 BMW Z4. In addition, the cost of maintenance, including insurance, on 2007 BMW Z4 would be higher. At 4,400 cc (8 cylinders), 2010 BMW 550 is equipped with a bigger engine. In terms of performance, 2010 BMW 550 (400 HP @ 5500 RPM) has 65 more horse power than 2007 BMW Z4. (335 HP @ 7900 RPM) In normal driving conditions, 2010 BMW 550 should accelerate faster than 2007 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2010 BMW 550 weights approximately 930 kg more than 2007 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, 2010 BMW 550 (609 Nm @ 1750 RPM) has 294 more torque (in Nm) than 2007 BMW Z4. (315 Nm @ 2750 RPM). This means 2010 BMW 550 will have an easier job in driving up hills or pulling heavy equipment than 2007 BMW Z4.
Compare all specifications:
| 2007 BMW Z4 | 2010 BMW 550 | |
| Make | BMW | BMW |
| Model | Z4 | 550 |
| Year Released | 2007 | 2010 |
| Body Type | Convertible | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 2996 cc | 4400 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 335 HP | 400 HP |
| Engine RPM | 7900 RPM | 5500 RPM |
| Torque | 315 Nm | 609 Nm |
| Torque RPM | 2750 RPM | 1750 RPM |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1310 kg | 2240 kg |
| Vehicle Length | 4100 mm | 4999 mm |
| Vehicle Width | 1790 mm | 1900 mm |
| Vehicle Height | 1310 mm | 1560 mm |
| Wheelbase Size | 2500 mm | 3066 mm |
| Fuel Tank Capacity | 55 L | 70 L |
