2006 BMW Z4 vs. 2005 BMW X3
To start off, 2006 BMW Z4 is newer by 1 year(s). Which means there will be less support and parts availability for 2005 BMW X3. In addition, the cost of maintenance, including insurance, on 2005 BMW X3 would be higher. At 2,492 cc (6 cylinders), 2006 BMW Z4 is equipped with a bigger engine. In terms of performance, 2006 BMW Z4 (189 HP @ 6000 RPM) has 5 more horse power than 2005 BMW X3. (184 HP @ 6000 RPM). In normal driving conditions, 2006 BMW Z4 should accelerate faster than 2005 BMW X3. With that said, vehicle weight also plays an important factor in acceleration. 2005 BMW X3 weights approximately 480 kg more than 2006 BMW Z4.
Because 2005 BMW X3 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, 2005 BMW X3 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, 2006 BMW Z4 (245 Nm @ 3500 RPM) has 8 more torque (in Nm) than 2005 BMW X3. (237 Nm @ 3500 RPM). This means 2006 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 2005 BMW X3.
Compare all specifications:
| 2006 BMW Z4 | 2005 BMW X3 | |
| Make | BMW | BMW |
| Model | Z4 | X3 |
| Year Released | 2006 | 2005 |
| Body Type | Convertible | SUV |
| Engine Position | Front | Front |
| Engine Size | 2492 cc | 2491 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 189 HP | 184 HP |
| Engine RPM | 6000 RPM | 6000 RPM |
| Torque | 245 Nm | 237 Nm |
| Torque RPM | 3500 RPM | 3500 RPM |
| Engine Compression Ratio | 11.0:1 | 10.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Drive Type | Rear | 4WD |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1335 kg | 1815 kg |
| Vehicle Length | 4100 mm | 4570 mm |
| Vehicle Width | 1790 mm | 1860 mm |
| Vehicle Height | 1310 mm | 1680 mm |
| Wheelbase Size | 2500 mm | 2710 mm |
| Fuel Consumption Overall | 9 L/100km | 11.8 L/100km |
| Fuel Tank Capacity | 55 L | 67 L |
