2006 BMW 523 vs. 2004 BMW 630
To start off, 2006 BMW 523 is newer by 2 year(s). Which means there will be less support and parts availability for 2004 BMW 630. In addition, the cost of maintenance, including insurance, on 2004 BMW 630 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) has 79 more horse power than 2006 BMW 523. (175 HP) In normal driving conditions, 2004 BMW 630 should accelerate faster than 2006 BMW 523.
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 75 more torque (in Nm) than 2006 BMW 523. (230 Nm @ 3500 RPM). This means 2004 BMW 630 will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW 523.
Compare all specifications:
| 2006 BMW 523 | 2004 BMW 630 | |
| Make | BMW | BMW |
| Model | 523 | 630 |
| Year Released | 2006 | 2004 |
| Body Type | Station Wagon | Convertible |
| Engine Position | Front | Front |
| Engine Size | 2497 cc | 2993 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 175 HP | 254 HP |
| Torque | 230 Nm | 305 Nm |
| Torque RPM | 3500 RPM | 2500 RPM |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 227 km/hour | 250 km/hour |
| Acceleration 0-100mph | 8.8 seconds | 6.9 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Length | 4850 mm | 4830 mm |
| Vehicle Width | 1850 mm | 1860 mm |
| Vehicle Height | 1500 mm | 1380 mm |
| Wheelbase Size | 2840 mm | 2790 mm |
| Fuel Consumption Overall | 8.9 L/100km | 9.6 L/100km |
| Fuel Tank Capacity | 70 L | 70 L |
