2005 BMW X3 vs. 2003 BMW Z4
To start off, 2005 BMW X3 is newer by 2 year(s). Which means there will be less support and parts availability for 2003 BMW Z4. In addition, the cost of maintenance, including insurance, on 2003 BMW Z4 would be higher. At 2,999 cc (6 cylinders), 2003 BMW Z4 is equipped with a bigger engine. In terms of performance, 2005 BMW X3 (228 HP @ 5900 RPM) has 1 more horse power than 2003 BMW Z4. (227 HP @ 6000 RPM). In normal driving conditions, 2005 BMW X3 should accelerate faster than 2003 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2005 BMW X3 weights approximately 545 kg more than 2003 BMW Z4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 BMW X3 is four wheel drive (4WD), it will have significant more traction and grip than 2003 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, 2005 BMW X3 (300 Nm @ 3500 RPM) has 9 more torque (in Nm) than 2003 BMW Z4. (291 Nm @ 3500 RPM). This means 2005 BMW X3 will have an easier job in driving up hills or pulling heavy equipment than 2003 BMW Z4.
Compare all specifications:
| 2005 BMW X3 | 2003 BMW Z4 | |
| Make | BMW | BMW |
| Model | X3 | Z4 |
| Year Released | 2005 | 2003 |
| Body Type | SUV | Convertible |
| Engine Position | Front | Front |
| Engine Size | 2983 cc | 2999 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 228 HP | 227 HP |
| Engine RPM | 5900 RPM | 6000 RPM |
| Torque | 300 Nm | 291 Nm |
| Torque RPM | 3500 RPM | 3500 RPM |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | 4WD | Rear |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1835 kg | 1290 kg |
| Vehicle Length | 4570 mm | 4100 mm |
| Vehicle Width | 1860 mm | 1790 mm |
| Vehicle Height | 1680 mm | 1310 mm |
| Wheelbase Size | 2730 mm | 2500 mm |
| Fuel Tank Capacity | 67 L | 55 L |
