1999 Audi S8 vs. 2004 BMW 630
To start off, 2004 BMW 630 is newer by 5 year(s). Which means there will be less support and parts availability for 1999 Audi S8. In addition, the cost of maintenance, including insurance, on 1999 Audi S8 would be higher. At 4,170 cc (8 cylinders), 1999 Audi S8 is equipped with a bigger engine. In terms of performance, 2004 BMW 630 (254 HP @ 6600 RPM) has 7 more horse power than 1999 Audi S8. (247 HP @ 7000 RPM) In normal driving conditions, 2004 BMW 630 should accelerate faster than 1999 Audi S8. With that said, vehicle weight also plays an important factor in acceleration. 2004 BMW 630 weights approximately 26 kg more than 1999 Audi S8. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1999 Audi S8 is all wheel drive (AWD), it will have significant more traction and grip than 2004 BMW 630. In wet, icy, snow, or gravel driving conditions, 1999 Audi S8 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, 1999 Audi S8 (330 Nm @ 3400 RPM) has 30 more torque (in Nm) than 2004 BMW 630. (300 Nm @ 2500 RPM). This means 1999 Audi S8 will have an easier job in driving up hills or pulling heavy equipment than 2004 BMW 630.
Compare all specifications:
| 1999 Audi S8 | 2004 BMW 630 | |
| Make | Audi | BMW |
| Model | S8 | 630 |
| Year Released | 1999 | 2004 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 4170 cc | 2983 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 247 HP | 254 HP |
| Engine RPM | 7000 RPM | 6600 RPM |
| Torque | 330 Nm | 300 Nm |
| Torque RPM | 3400 RPM | 2500 RPM |
| Engine Bore Size | 84.5 mm | 85 mm |
| Engine Stroke Size | 93 mm | 88 mm |
| Engine Compression Ratio | 11.0:1 | 10.7:1 |
| Top Speed | 250 km/hour | 250 km/hour |
| Acceleration 0-100mph | 6.6 seconds | 7.2 seconds |
| Drive Type | AWD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1750 kg | 1776 kg |
| Vehicle Length | 5040 mm | 4830 mm |
| Vehicle Width | 1890 mm | 1860 mm |
| Vehicle Height | 1420 mm | 1380 mm |
| Wheelbase Size | 2890 mm | 2730 mm |
| Fuel Consumption Highway | 9.5 L/100km | 7.5 L/100km |
| Fuel Consumption City | 21.7 L/100km | 14.2 L/100km |
| Fuel Consumption Overall | 13.9 L/100km | 9.9 L/100km |
| Fuel Tank Capacity | 90 L | 70 L |
