1999 BMW 323 vs. 2007 BMW X5
To start off, 2007 BMW X5 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 4,397 cc (8 cylinders), 2007 BMW X5 is equipped with a bigger engine. In terms of performance, 2007 BMW X5 (316 HP @ 6100 RPM) has 146 more horse power than 1999 BMW 323. (170 HP @ 5500 RPM) In normal driving conditions, 2007 BMW X5 should accelerate faster than 1999 BMW 323. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW X5 weights approximately 765 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 X5 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 X5 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 X5 (440 Nm @ 3700 RPM) has 195 more torque (in Nm) than 1999 BMW 323. (245 Nm @ 3500 RPM). This means 2007 BMW X5 will have an easier job in driving up hills or pulling heavy equipment than 1999 BMW 323. 2007 BMW X5 has automatic transmission and 1999 BMW 323 has manual transmission. 1999 BMW 323 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 BMW X5 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1999 BMW 323 | 2007 BMW X5 | |
| Make | BMW | BMW |
| Model | 323 | X5 |
| Year Released | 1999 | 2007 |
| Body Type | Sedan | SUV |
| Engine Position | Front | Front |
| Engine Size | 2494 cc | 4397 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 170 HP | 316 HP |
| Engine RPM | 5500 RPM | 6100 RPM |
| Torque | 245 Nm | 440 Nm |
| Torque RPM | 3500 RPM | 3700 RPM |
| Engine Compression Ratio | 10.5:1 | 10.0:1 |
| Top Speed | 201 km/hour | 210 km/hour |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1430 kg | 2195 kg |
| Vehicle Length | 4480 mm | 4670 mm |
| Vehicle Width | 1750 mm | 1880 mm |
| Vehicle Height | 1420 mm | 1710 mm |
| Wheelbase Size | 2730 mm | 2830 mm |
| Fuel Tank Capacity | 63 L | 93 L |
