2009 BMW X6 vs. 2006 BMW Z4
To start off, 2009 BMW X6 is newer by 3 year(s). Which means there will be less support and parts availability for 2006 BMW Z4. In addition, the cost of maintenance, including insurance, on 2006 BMW Z4 would be higher. At 2,993 cc (6 cylinders), 2009 BMW X6 is equipped with a bigger engine. In terms of performance, 2009 BMW X6 (232 HP @ 4000 RPM) has 64 more horse power than 2006 BMW Z4. (168 HP @ 6250 RPM). In normal driving conditions, 2009 BMW X6 should accelerate faster than 2006 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2009 BMW X6 weights approximately 825 kg more than 2006 BMW Z4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 BMW X6 is four wheel drive (4WD), it will have significant more traction and grip than 2006 BMW Z4. In wet, icy, snow, or gravel driving conditions, 2009 BMW X6 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 X6 (520 Nm @ 2000 RPM) has 310 more torque (in Nm) than 2006 BMW Z4. (210 Nm @ 3500 RPM). This means 2009 BMW X6 will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW Z4.
Compare all specifications:
| 2009 BMW X6 | 2006 BMW Z4 | |
| Make | BMW | BMW |
| Model | X6 | Z4 |
| Year Released | 2009 | 2006 |
| Body Type | SUV | Convertible |
| Engine Position | Front | Front |
| Engine Size | 2993 cc | 2170 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 232 HP | 168 HP |
| Engine RPM | 4000 RPM | 6250 RPM |
| Torque | 520 Nm | 210 Nm |
| Torque RPM | 2000 RPM | 3500 RPM |
| Engine Bore Size | 84 mm | 80 mm |
| Engine Stroke Size | 90 mm | 72 mm |
| Engine Compression Ratio | 17.0:1 | 10.8:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Top Speed | 210 km/hour | 225 km/hour |
| Acceleration 0-100mph | 8 seconds | 7.7 seconds |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 4 seats | 2 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 2150 kg | 1325 kg |
| Vehicle Length | 4880 mm | 4100 mm |
| Vehicle Width | 1990 mm | 1790 mm |
| Vehicle Height | 1700 mm | 1310 mm |
| Wheelbase Size | 2940 mm | 2500 mm |
| Fuel Consumption Overall | 8.2 L/100km | 8.9 L/100km |
| Fuel Tank Capacity | 85 L | 55 L |
