2004 BMW X5 vs. 2006 BMW Z4
To start off, 2006 BMW Z4 is newer by 2 year(s). Which means there will be less support and parts availability for 2004 BMW X5. In addition, the cost of maintenance, including insurance, on 2004 BMW X5 would be higher. At 2,978 cc (6 cylinders), 2004 BMW X5 is equipped with a bigger engine. In terms of performance, 2004 BMW X5 (228 HP @ 7400 RPM) has 39 more horse power than 2006 BMW Z4. (189 HP @ 6000 RPM). In normal driving conditions, 2004 BMW X5 should accelerate faster than 2006 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2004 BMW X5 weights approximately 775 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 2004 BMW X5 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, 2004 BMW X5 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, 2004 BMW X5 (290 Nm) has 45 more torque (in Nm) than 2006 BMW Z4. (245 Nm). This means 2004 BMW X5 will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW Z4.
Compare all specifications:
| 2004 BMW X5 | 2006 BMW Z4 | |
| Make | BMW | BMW |
| Model | X5 | Z4 |
| Year Released | 2004 | 2006 |
| Body Type | SUV | Convertible |
| Engine Position | Front | Front |
| Engine Size | 2978 cc | 2492 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 228 HP | 189 HP |
| Engine RPM | 7400 RPM | 6000 RPM |
| Torque | 290 Nm | 245 Nm |
| Engine Bore Size | 84 mm | 84 mm |
| Engine Stroke Size | 90 mm | 75 mm |
| Engine Compression Ratio | 10.2:1 | 11.0:1 |
| Drive Type | 4WD | Rear |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 2110 kg | 1335 kg |
| Vehicle Length | 4670 mm | 4100 mm |
| Vehicle Width | 1880 mm | 1790 mm |
| Vehicle Height | 1770 mm | 1310 mm |
| Wheelbase Size | 2940 mm | 2500 mm |
| Fuel Consumption Overall | 13.8 L/100km | 9 L/100km |
| Fuel Tank Capacity | 92 L | 55 L |
