2007 BMW X3 vs. 1999 BMW 323
To start off, 2007 BMW X3 is newer by 8 year(s). Which means there will be less support and parts availability for 1999 BMW 323. In addition, the cost of maintenance, including insurance, on 1999 BMW 323 would be higher. At 2,993 cc (6 cylinders), 2007 BMW X3 is equipped with a bigger engine. In terms of performance, 2007 BMW X3 (283 HP @ 4400 RPM) has 113 more horse power than 1999 BMW 323. (170 HP @ 5500 RPM). In normal driving conditions, 2007 BMW X3 should accelerate faster than 1999 BMW 323. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW X3 weights approximately 493 kg more than 1999 BMW 323. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2007 BMW X3 is four wheel drive (4WD), it will have significant more traction and grip than 1999 BMW 323. 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 X3 (580 Nm @ 1750 RPM) has 335 more torque (in Nm) than 1999 BMW 323. (245 Nm @ 3500 RPM). This means 2007 BMW X3 will have an easier job in driving up hills or pulling heavy equipment than 1999 BMW 323.
Compare all specifications:
| 2007 BMW X3 | 1999 BMW 323 | |
| Make | BMW | BMW |
| Model | X3 | 323 |
| Year Released | 2007 | 1999 |
| Body Type | SUV | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2993 cc | 2494 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 283 HP | 170 HP |
| Engine RPM | 4400 RPM | 5500 RPM |
| Torque | 580 Nm | 245 Nm |
| Torque RPM | 1750 RPM | 3500 RPM |
| Engine Compression Ratio | 17.0:1 | 10.5:1 |
| Top Speed | 240 km/hour | 201 km/hour |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1950 kg | 1457 kg |
| Vehicle Length | 4570 mm | 4480 mm |
| Vehicle Width | 1860 mm | 1750 mm |
| Vehicle Height | 1680 mm | 1420 mm |
| Wheelbase Size | 2800 mm | 2730 mm |
| Fuel Tank Capacity | 67 L | 63 L |
