2007 BMW Z4 vs. 2009 BMW 525
To start off, 2009 BMW 525 is newer by 2 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 2,497 cc (6 cylinders), 2009 BMW 525 is equipped with a bigger engine. In terms of performance, 2009 BMW 525 (215 HP @ 6500 RPM) has 67 more horse power than 2007 BMW Z4. (148 HP @ 6200 RPM) In normal driving conditions, 2009 BMW 525 should accelerate faster than 2007 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2009 BMW 525 weights approximately 270 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.
Because 2009 BMW 525 is four wheel drive (4WD), it will have significant more traction and grip than 2007 BMW Z4. In wet, icy, snow, or gravel driving conditions, 2009 BMW 525 will offer significantly more control. 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 525 (250 Nm @ 2750 RPM) has 50 more torque (in Nm) than 2007 BMW Z4. (200 Nm @ 3600 RPM). This means 2009 BMW 525 will have an easier job in driving up hills or pulling heavy equipment than 2007 BMW Z4.
Compare all specifications:
| 2007 BMW Z4 | 2009 BMW 525 | |
| Make | BMW | BMW |
| Model | Z4 | 525 |
| Year Released | 2007 | 2009 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1993 cc | 2497 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 148 HP | 215 HP |
| Engine RPM | 6200 RPM | 6500 RPM |
| Torque | 200 Nm | 250 Nm |
| Torque RPM | 3600 RPM | 2750 RPM |
| Engine Bore Size | 84 mm | 78.8 mm |
| Engine Stroke Size | 90 mm | 82 mm |
| Engine Compression Ratio | 10.5:1 | 11.0:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Top Speed | 220 km/hour | 237 km/hour |
| Acceleration 0-100mph | 8.2 seconds | 8.3 seconds |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1295 kg | 1565 kg |
| Vehicle Length | 4100 mm | 4850 mm |
| Vehicle Width | 1310 mm | 1850 mm |
| Vehicle Height | 1790 mm | 1470 mm |
| Wheelbase Size | 2500 mm | 2890 mm |
| Fuel Consumption Overall | 7.5 L/100km | 9.6 L/100km |
| Fuel Tank Capacity | 55 L | 70 L |
