2003 Audi A8 vs. 2005 BMW 630
To start off, 2005 BMW 630 is newer by 2 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 2,999 cc (6 cylinders), 2005 BMW 630 is equipped with a bigger engine. In terms of performance, 2005 BMW 630 (254 HP @ 6600 RPM) has 38 more horse power than 2003 Audi A8. (216 HP @ 6300 RPM) In normal driving conditions, 2005 BMW 630 should accelerate faster than 2003 Audi A8. With that said, vehicle weight also plays an important factor in acceleration. 2005 BMW 630 weights approximately 94 kg more than 2003 Audi A8. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 BMW 630 is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 2005 BMW 630. However, in wet, icy, snow, or gravel driving conditions, 2003 Audi A8, being front wheel drive (FWD), will offer much better control with better grip. 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, both vehicles can yield 300 Nm of torque. So under normal driving conditions, the ability to climb up hills and pull heavy equipment should be relatively similar for both vehicles.
Compare all specifications:
| 2003 Audi A8 | 2005 BMW 630 | |
| Make | Audi | BMW |
| Model | A8 | 630 |
| Year Released | 2003 | 2005 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 2974 cc | 2999 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 216 HP | 254 HP |
| Engine RPM | 6300 RPM | 6600 RPM |
| Torque | 300 Nm | 300 Nm |
| Torque RPM | 3200 RPM | 2500 RPM |
| Engine Bore Size | 82.5 mm | 85 mm |
| Engine Stroke Size | 92.8 mm | 88 mm |
| Top Speed | 242 km/hour | 250 km/hour |
| Acceleration 0-100mph | 7.9 seconds | 6.9 seconds |
| Drive Type | Front | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1670 kg | 1764 kg |
| Vehicle Length | 5060 mm | 4830 mm |
| Vehicle Width | 1900 mm | 1860 mm |
| Vehicle Height | 1450 mm | 1380 mm |
| Wheelbase Size | 2950 mm | 2670 mm |
| Fuel Consumption Overall | 9.6 L/100km | 9.6 L/100km |
| Fuel Tank Capacity | 90 L | 70 L |
