2002 BMW 320 vs. 2004 BMW 630
To start off, 2004 BMW 630 is newer by 2 year(s). Which means there will be less support and parts availability for 2002 BMW 320. In addition, the cost of maintenance, including insurance, on 2002 BMW 320 would be higher. At 2,993 cc (6 cylinders), 2004 BMW 630 is equipped with a bigger engine. In terms of performance, 2004 BMW 630 (254 HP @ 6600 RPM) has 106 more horse power than 2002 BMW 320. (148 HP @ 5900 RPM) In normal driving conditions, 2004 BMW 630 should accelerate faster than 2002 BMW 320. With that said, vehicle weight also plays an important factor in acceleration. 2004 BMW 630 weights approximately 295 kg more than 2002 BMW 320. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front wheel drive vehicles. 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, 2004 BMW 630 (305 Nm @ 2500 RPM) has 95 more torque (in Nm) than 2002 BMW 320. (210 Nm @ 3750 RPM). This means 2004 BMW 630 will have an easier job in driving up hills or pulling heavy equipment than 2002 BMW 320.
Compare all specifications:
| 2002 BMW 320 | 2004 BMW 630 | |
| Make | BMW | BMW |
| Model | 320 | 630 |
| Year Released | 2002 | 2004 |
| Body Type | Convertible | Convertible |
| Engine Position | Front | Front |
| Engine Size | 1995 cc | 2993 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 148 HP | 254 HP |
| Engine RPM | 5900 RPM | 6600 RPM |
| Torque | 210 Nm | 305 Nm |
| Torque RPM | 3750 RPM | 2500 RPM |
| Engine Bore Size | 84 mm | 85.1 mm |
| Engine Stroke Size | 90 mm | 88 mm |
| Engine Compression Ratio | 10.0:1 | 10.7:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1465 kg | 1760 kg |
| Vehicle Length | 4490 mm | 4830 mm |
| Vehicle Width | 1760 mm | 1860 mm |
| Vehicle Height | 1380 mm | 1380 mm |
| Wheelbase Size | 2730 mm | 2790 mm |
| Fuel Tank Capacity | 63 L | 70 L |
