2009 BMW 523 vs. 2008 BMW 630
To start off, 2009 BMW 523 is newer by 1 year(s). Which means there will be less support and parts availability for 2008 BMW 630. In addition, the cost of maintenance, including insurance, on 2008 BMW 630 would be higher. At 2,994 cc (6 cylinders), 2008 BMW 630 is equipped with a bigger engine. In terms of performance, 2008 BMW 630 (254 HP @ 6600 RPM) has 79 more horse power than 2009 BMW 523. (175 HP @ 5800 RPM) In normal driving conditions, 2008 BMW 630 should accelerate faster than 2009 BMW 523. With that said, vehicle weight also plays an important factor in acceleration. 2008 BMW 630 weights approximately 75 kg more than 2009 BMW 523. 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, 2008 BMW 630 (300 Nm @ 2500 RPM) has 70 more torque (in Nm) than 2009 BMW 523. (230 Nm @ 3500 RPM). This means 2008 BMW 630 will have an easier job in driving up hills or pulling heavy equipment than 2009 BMW 523.
Compare all specifications:
| 2009 BMW 523 | 2008 BMW 630 | |
| Make | BMW | BMW |
| Model | 523 | 630 |
| Year Released | 2009 | 2008 |
| Engine Position | Front | Front |
| Engine Size | 2497 cc | 2994 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 |
| Engine RPM | 5800 RPM | 6600 RPM |
| Torque | 230 Nm | 300 Nm |
| Torque RPM | 3500 RPM | 2500 RPM |
| Engine Bore Size | 82 mm | 85 mm |
| Engine Stroke Size | 78.8 mm | 88 mm |
| Engine Compression Ratio | 11.0:1 | 10.7:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Acceleration 0-100mph | 8.8 seconds | 6.5 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1490 kg | 1565 kg |
| Vehicle Length | 4850 mm | 4830 mm |
| Vehicle Width | 1470 mm | 1860 mm |
| Vehicle Height | 1850 mm | 1380 mm |
| Wheelbase Size | 2890 mm | 2790 mm |
| Fuel Consumption Overall | 8.5 L/100km | 9.1 L/100km |
| Fuel Tank Capacity | 70 L | 70 L |
