2006 BMW 525 vs. 2009 BMW 635
To start off, 2009 BMW 635 is newer by 3 year(s). Which means there will be less support and parts availability for 2006 BMW 525. In addition, the cost of maintenance, including insurance, on 2006 BMW 525 would be higher. At 2,993 cc (6 cylinders), 2009 BMW 635 is equipped with a bigger engine. In terms of performance, 2009 BMW 635 (282 HP @ 4400 RPM) has 67 more horse power than 2006 BMW 525. (215 HP @ 6500 RPM) In normal driving conditions, 2009 BMW 635 should accelerate faster than 2006 BMW 525.
Because 2006 BMW 525 is four wheel drive (4WD), it will have significant more traction and grip than 2009 BMW 635. In wet, icy, snow, or gravel driving conditions, 2006 BMW 525 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, 2009 BMW 635 (580 Nm @ 1750 RPM) has 330 more torque (in Nm) than 2006 BMW 525. (250 Nm @ 2750 RPM). This means 2009 BMW 635 will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW 525. 2009 BMW 635 has automatic transmission and 2006 BMW 525 has manual transmission. 2006 BMW 525 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 BMW 635 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2006 BMW 525 | 2009 BMW 635 | |
| Make | BMW | BMW |
| Model | 525 | 635 |
| Year Released | 2006 | 2009 |
| Body Type | Sedan | 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 | 215 HP | 282 HP |
| Engine RPM | 6500 RPM | 4400 RPM |
| Torque | 250 Nm | 580 Nm |
| Torque RPM | 2750 RPM | 1750 RPM |
| Engine Bore Size | 78.8 mm | 84 mm |
| Engine Stroke Size | 82 mm | 90 mm |
| Engine Compression Ratio | 11.0:1 | 17.0:1 |
| Fuel Type | Gasoline - Premium | Diesel |
| Top Speed | 237 km/hour | 250 km/hour |
| Acceleration 0-100mph | 8.3 seconds | 6.6 seconds |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Length | 4850 mm | 4830 mm |
| Vehicle Width | 1850 mm | 1860 mm |
| Vehicle Height | 1470 mm | 1380 mm |
| Wheelbase Size | 2890 mm | 2790 mm |
| Fuel Consumption Overall | 9.8 L/100km | 7.4 L/100km |
| Fuel Tank Capacity | 70 L | 70 L |
