2006 BMW X3 vs. 2007 BMW 545
To start off, 2007 BMW 545 is newer by 1 year(s). Which means there will be less support and parts availability for 2006 BMW X3. In addition, the cost of maintenance, including insurance, on 2006 BMW X3 would be higher. At 4,398 cc (8 cylinders), 2007 BMW 545 is equipped with a bigger engine. In terms of performance, 2007 BMW 545 (328 HP @ 6100 RPM) has 127 more horse power than 2006 BMW X3. (201 HP @ 4000 RPM) In normal driving conditions, 2007 BMW 545 should accelerate faster than 2006 BMW X3. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW X3 weights approximately 220 kg more than 2007 BMW 545.
Because 2006 BMW X3 is four wheel drive (4WD), it will have significant more traction and grip than 2007 BMW 545. In wet, icy, snow, or gravel driving conditions, 2006 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, 2007 BMW 545 (450 Nm @ 3600 RPM) has 40 more torque (in Nm) than 2006 BMW X3. (410 Nm @ 1500 RPM). This means 2007 BMW 545 will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW X3.
Compare all specifications:
| 2006 BMW X3 | 2007 BMW 545 | |
| Make | BMW | BMW |
| Model | X3 | 545 |
| Year Released | 2006 | 2007 |
| Body Type | SUV | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2993 cc | 4398 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 201 HP | 328 HP |
| Engine RPM | 4000 RPM | 6100 RPM |
| Torque | 410 Nm | 450 Nm |
| Torque RPM | 1500 RPM | 3600 RPM |
| Engine Compression Ratio | 17.0:1 | 10.0:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Top Speed | 205 km/hour | 245 km/hour |
| Acceleration 0-100mph | 7.9 seconds | 5.8 seconds |
| Drive Type | 4WD | Rear |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1925 kg | 1705 kg |
| Vehicle Length | 4570 mm | 4850 mm |
| Vehicle Width | 1860 mm | 1850 mm |
| Vehicle Height | 1680 mm | 1470 mm |
| Wheelbase Size | 2800 mm | 2890 mm |
| Fuel Consumption Overall | 8.4 L/100km | 11 L/100km |
| Fuel Tank Capacity | 67 L | 70 L |
