2007 BMW Z4 vs. 2008 Saturn Sky
To start off, 2008 Saturn Sky is newer by 1 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 3,246 cc (6 cylinders), 2007 BMW Z4 is equipped with a bigger engine. In terms of performance, 2007 BMW Z4 (338 HP @ 7900 RPM) has 165 more horse power than 2008 Saturn Sky. (173 HP @ 5800 RPM). In normal driving conditions, 2007 BMW Z4 should accelerate faster than 2008 Saturn Sky. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW Z4 weights approximately 195 kg more than 2008 Saturn Sky. 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, 2007 BMW Z4 (365 Nm @ 4900 RPM) has 139 more torque (in Nm) than 2008 Saturn Sky. (226 Nm @ 4500 RPM). This means 2007 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 2008 Saturn Sky.
Compare all specifications:
| 2007 BMW Z4 | 2008 Saturn Sky | |
| Make | BMW | Saturn |
| Model | Z4 | Sky |
| Year Released | 2007 | 2008 |
| Body Type | Convertible | Convertible |
| Engine Position | Front | Front |
| Engine Size | 3246 cc | 2399 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 338 HP | 173 HP |
| Engine RPM | 7900 RPM | 5800 RPM |
| Torque | 365 Nm | 226 Nm |
| Torque RPM | 4900 RPM | 4500 RPM |
| Engine Compression Ratio | 11.5:1 | 10.4:1 |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1485 kg | 1290 kg |
| Vehicle Length | 4120 mm | 4100 mm |
| Vehicle Width | 1310 mm | 1820 mm |
| Vehicle Height | 1790 mm | 1280 mm |
| Wheelbase Size | 2500 mm | 2420 mm |
| Fuel Consumption Overall | 12.1 L/100km | 12.4 L/100km |
| Fuel Tank Capacity | 70 L | 61 L |
