2006 BMW 525 vs. 2011 BMW Z4
To start off, 2011 BMW Z4 is newer by 5 year(s). Which means there will be less support and parts availability for 2006 BMW 525. In addition, the cost of maintenance, including insurance, on 2006 BMW 525 would be higher. At 2,497 cc (6 cylinders), 2006 BMW 525 is equipped with a bigger engine. In terms of performance, 2011 BMW Z4 (244 HP @ 5000 RPM) has 29 more horse power than 2006 BMW 525. (215 HP @ 6500 RPM) In normal driving conditions, 2011 BMW Z4 should accelerate faster than 2006 BMW 525. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW 525 weights approximately 75 kg more than 2011 BMW Z4.
Because 2006 BMW 525 is four wheel drive (4WD), it will have significant more traction and grip than 2011 BMW Z4. In wet, icy, snow, or gravel driving conditions, 2006 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, 2011 BMW Z4 (350 Nm @ 1500 RPM) has 100 more torque (in Nm) than 2006 BMW 525. (250 Nm @ 2750 RPM). This means 2011 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW 525.
Compare all specifications:
| 2006 BMW 525 | 2011 BMW Z4 | |
| Make | BMW | BMW |
| Model | 525 | Z4 |
| Year Released | 2006 | 2011 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 2497 cc | 1997 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 215 HP | 244 HP |
| Engine RPM | 6500 RPM | 5000 RPM |
| Torque | 250 Nm | 350 Nm |
| Torque RPM | 2750 RPM | 1500 RPM |
| Engine Bore Size | 78.8 mm | 90.1 mm |
| Engine Stroke Size | 82 mm | 84 mm |
| Fuel Type | Gasoline - Premium | Gasoline |
| Top Speed | 237 km/hour | 250 km/hour |
| Acceleration 0-100mph | 8.3 seconds | 5.7 seconds |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1565 kg | 1490 kg |
| Vehicle Length | 4850 mm | 4239 mm |
| Vehicle Width | 1850 mm | 1791 mm |
| Vehicle Height | 1470 mm | 1290 mm |
| Wheelbase Size | 2890 mm | 2497 mm |
| Fuel Consumption Highway | 7.4 L/100km | 5.5 L/100km |
| Fuel Consumption City | 13.9 L/100km | 9.1 L/100km |
| Fuel Consumption Overall | 9.8 L/100km | 6.8 L/100km |
| Fuel Tank Capacity | 70 L | 55 L |
