2003 Audi A8 vs. 2006 BMW 525
To start off, 2006 BMW 525 is newer by 3 year(s). Which means there will be less support and parts availability for 2003 Audi A8. In addition, the cost of maintenance, including insurance, on 2003 Audi A8 would be higher. At 3,936 cc (8 cylinders), 2003 Audi A8 is equipped with a bigger engine. In terms of performance, 2003 Audi A8 (276 HP @ 3750 RPM) has 61 more horse power than 2006 BMW 525. (215 HP @ 6500 RPM). In normal driving conditions, 2003 Audi A8 should accelerate faster than 2006 BMW 525.
Both vehicles are four wheel drive (4WD) - it offers better handling, traction, and control in all driving conditions compared with front wheel drive or rear 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, 2003 Audi A8 (650 Nm @ 1800 RPM) has 400 more torque (in Nm) than 2006 BMW 525. (250 Nm @ 2750 RPM). This means 2003 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW 525.
Compare all specifications:
| 2003 Audi A8 | 2006 BMW 525 | |
| Make | Audi | BMW |
| Model | A8 | 525 |
| Year Released | 2003 | 2006 |
| Body Type | Sedan | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 3936 cc | 2497 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 276 HP | 215 HP |
| Engine RPM | 3750 RPM | 6500 RPM |
| Torque | 650 Nm | 250 Nm |
| Torque RPM | 1800 RPM | 2750 RPM |
| Engine Bore Size | 81.1 mm | 78.9 mm |
| Engine Stroke Size | 95.5 mm | 82 mm |
| Engine Compression Ratio | 10.5:1 | 11.0:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Drive Type | 4WD | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Length | 5060 mm | 4850 mm |
| Vehicle Width | 1900 mm | 1850 mm |
| Vehicle Height | 1450 mm | 1500 mm |
| Wheelbase Size | 2770 mm | 2840 mm |
| Fuel Consumption Overall | 9.6 L/100km | 9.9 L/100km |
| Fuel Tank Capacity | 90 L | 70 L |
