2007 BMW 550 vs. 2007 BMW X3
To start off, both 2007 BMW 550 and 2007 BMW X3 were released in the same year (2007). Therefore the support and the availability on parts for both vehicles should be relatively similar. At 4,799 cc (8 cylinders), 2007 BMW 550 is equipped with a bigger engine. In terms of performance, 2007 BMW 550 (362 HP @ 6300 RPM) has 213 more horse power than 2007 BMW X3. (149 HP @ 4000 RPM). In normal driving conditions, 2007 BMW 550 should accelerate faster than 2007 BMW X3. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW X3 weights approximately 80 kg more than 2007 BMW 550.
Because 2007 BMW X3 is four wheel drive (4WD), it will have significant more traction and grip than 2007 BMW 550. In wet, icy, snow, or gravel driving conditions, 2007 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 550 (490 Nm @ 3400 RPM) has 160 more torque (in Nm) than 2007 BMW X3. (330 Nm @ 2000 RPM). This means 2007 BMW 550 will have an easier job in driving up hills or pulling heavy equipment than 2007 BMW X3.
Compare all specifications:
| 2007 BMW 550 | 2007 BMW X3 | |
| Make | BMW | BMW |
| Model | 550 | X3 |
| Year Released | 2007 | 2007 |
| Engine Position | Front | Front |
| Engine Size | 4799 cc | 1995 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 362 HP | 149 HP |
| Engine RPM | 6300 RPM | 4000 RPM |
| Torque | 490 Nm | 330 Nm |
| Torque RPM | 3400 RPM | 2000 RPM |
| Engine Bore Size | 93.1 mm | 84 mm |
| Engine Stroke Size | 88.3 mm | 90 mm |
| Engine Compression Ratio | 10.5:1 | 17.0:1 |
| Fuel Type | Gasoline | Diesel |
| Acceleration 0-100mph | 5.5 seconds | 9.1 seconds |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1660 kg | 1740 kg |
| Vehicle Length | 4850 mm | 4570 mm |
| Vehicle Width | 1470 mm | 1680 mm |
| Vehicle Height | 1850 mm | 1860 mm |
| Wheelbase Size | 2890 mm | 2800 mm |
| Fuel Consumption Overall | 10.8 L/100km | 6.5 L/100km |
| Fuel Tank Capacity | 70 L | 67 L |
