2003 BMW 520 vs. 2006 BMW M6
To start off, 2006 BMW M6 is newer by 3 year(s). Which means there will be less support and parts availability for 2003 BMW 520. In addition, the cost of maintenance, including insurance, on 2003 BMW 520 would be higher. At 4,997 cc (10 cylinders), 2006 BMW M6 is equipped with a bigger engine. In terms of performance, 2006 BMW M6 (500 HP @ 7750 RPM) has 333 more horse power than 2003 BMW 520. (167 HP @ 6100 RPM) In normal driving conditions, 2006 BMW M6 should accelerate faster than 2003 BMW 520.
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, 2006 BMW M6 (519 Nm @ 6100 RPM) has 309 more torque (in Nm) than 2003 BMW 520. (210 Nm @ 3500 RPM). This means 2006 BMW M6 will have an easier job in driving up hills or pulling heavy equipment than 2003 BMW 520.
Compare all specifications:
| 2003 BMW 520 | 2006 BMW M6 | |
| Make | BMW | BMW |
| Model | 520 | M6 |
| Year Released | 2003 | 2006 |
| Body Type | Station Wagon | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2170 cc | 4997 cc |
| Engine Cylinders | 6 cylinders | 10 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 167 HP | 500 HP |
| Engine RPM | 6100 RPM | 7750 RPM |
| Torque | 210 Nm | 519 Nm |
| Torque RPM | 3500 RPM | 6100 RPM |
| Engine Bore Size | 80 mm | 92 mm |
| Engine Stroke Size | 72 mm | 75.2 mm |
| Engine Compression Ratio | 10.7:1 | 12.0:1 |
| Drive Type | Rear | Rear |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Length | 4810 mm | 4880 mm |
| Vehicle Width | 1810 mm | 1860 mm |
| Vehicle Height | 1450 mm | 1380 mm |
| Wheelbase Size | 2890 mm | 2790 mm |
| Fuel Consumption | 7.5 L/100km | 13.1 L/100km |
| Fuel Consumption City | 12.8 L/100km | 19.6 L/100km |
| Fuel Tank Capacity | 70 L | 70 L |
