2007 BMW M6 vs. 2009 BMW 525
To start off, 2009 BMW 525 is newer by 2 year(s). Which means there will be less support and parts availability for 2007 BMW M6. In addition, the cost of maintenance, including insurance, on 2007 BMW M6 would be higher. At 4,999 cc (10 cylinders), 2007 BMW M6 is equipped with a bigger engine. In terms of performance, 2007 BMW M6 (500 HP @ 7750 RPM) has 285 more horse power than 2009 BMW 525. (215 HP @ 6500 RPM). In normal driving conditions, 2007 BMW M6 should accelerate faster than 2009 BMW 525. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW M6 weights approximately 415 kg more than 2009 BMW 525. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 BMW 525 is four wheel drive (4WD), it will have significant more traction and grip than 2007 BMW M6. In wet, icy, snow, or gravel driving conditions, 2009 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, 2007 BMW M6 (519 Nm @ 6100 RPM) has 269 more torque (in Nm) than 2009 BMW 525. (250 Nm @ 2750 RPM). This means 2007 BMW M6 will have an easier job in driving up hills or pulling heavy equipment than 2009 BMW 525. 2009 BMW 525 has automatic transmission and 2007 BMW M6 has manual transmission. 2007 BMW M6 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 BMW 525 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2007 BMW M6 | 2009 BMW 525 | |
| Make | BMW | BMW |
| Model | M6 | 525 |
| Year Released | 2007 | 2009 |
| Body Type | Convertible | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 4999 cc | 2497 cc |
| Engine Cylinders | 10 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 500 HP | 215 HP |
| Engine RPM | 7750 RPM | 6500 RPM |
| Torque | 519 Nm | 250 Nm |
| Torque RPM | 6100 RPM | 2750 RPM |
| Engine Bore Size | 92 mm | 78.9 mm |
| Engine Stroke Size | 75.2 mm | 82 mm |
| Engine Compression Ratio | 12.0:1 | 11.0:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1940 kg | 1525 kg |
| Vehicle Length | 4880 mm | 4850 mm |
| Vehicle Width | 1860 mm | 1850 mm |
| Vehicle Height | 1380 mm | 1500 mm |
| Wheelbase Size | 2790 mm | 2840 mm |
| Fuel Consumption Overall | 17 L/100km | 9.9 L/100km |
| Fuel Tank Capacity | 70 L | 70 L |
