2003 BMW X3 vs. 2007 BMW 320
To start off, 2007 BMW 320 is newer by 4 year(s). Which means there will be less support and parts availability for 2003 BMW X3. In addition, the cost of maintenance, including insurance, on 2003 BMW X3 would be higher. At 2,995 cc (6 cylinders), 2003 BMW X3 is equipped with a bigger engine. In terms of performance, 2003 BMW X3 (201 HP @ 4000 RPM) has 53 more horse power than 2007 BMW 320. (148 HP @ 6200 RPM). In normal driving conditions, 2003 BMW X3 should accelerate faster than 2007 BMW 320. With that said, vehicle weight also plays an important factor in acceleration. 2003 BMW X3 weights approximately 500 kg more than 2007 BMW 320. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2003 BMW X3 is four wheel drive (4WD), it will have significant more traction and grip than 2007 BMW 320. In wet, icy, snow, or gravel driving conditions, 2003 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, 2003 BMW X3 (410 Nm @ 1500 RPM) has 210 more torque (in Nm) than 2007 BMW 320. (200 Nm @ 3600 RPM). This means 2003 BMW X3 will have an easier job in driving up hills or pulling heavy equipment than 2007 BMW 320. 2003 BMW X3 has automatic transmission and 2007 BMW 320 has manual transmission. 2007 BMW 320 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2003 BMW X3 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2003 BMW X3 | 2007 BMW 320 | |
| Make | BMW | BMW |
| Model | X3 | 320 |
| Year Released | 2003 | 2007 |
| Body Type | SUV | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 2995 cc | 1995 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 201 HP | 148 HP |
| Engine RPM | 4000 RPM | 6200 RPM |
| Torque | 410 Nm | 200 Nm |
| Torque RPM | 1500 RPM | 3600 RPM |
| Engine Bore Size | 84 mm | 84 mm |
| Engine Stroke Size | 90 mm | 90 mm |
| Engine Compression Ratio | 17.0:1 | 10.5:1 |
| Top Speed | 215 km/hour | 218 km/hour |
| Acceleration 0-100mph | 8.2 seconds | 9.4 seconds |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1930 kg | 1430 kg |
| Vehicle Length | 4570 mm | 4530 mm |
| Vehicle Width | 1860 mm | 1420 mm |
| Vehicle Height | 1680 mm | 1820 mm |
| Wheelbase Size | 2730 mm | 2770 mm |
| Fuel Consumption Overall | 9.1 L/100km | 7.8 L/100km |
| Fuel Tank Capacity | 67 L | 63 L |
