1999 Audi S8 vs. 2008 BMW 523
To start off, 2008 BMW 523 is newer by 9 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, 1999 Audi S8 (247 HP @ 7000 RPM) has 72 more horse power than 2008 BMW 523. (175 HP @ 5800 RPM). In normal driving conditions, 1999 Audi S8 should accelerate faster than 2008 BMW 523. With that said, vehicle weight also plays an important factor in acceleration. 1999 Audi S8 weights approximately 250 kg more than 2008 BMW 523. 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 2008 BMW 523. 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 100 more torque (in Nm) than 2008 BMW 523. (230 Nm @ 3500 RPM). This means 1999 Audi S8 will have an easier job in driving up hills or pulling heavy equipment than 2008 BMW 523.
Compare all specifications:
| 1999 Audi S8 | 2008 BMW 523 | |
| Make | Audi | BMW |
| Model | S8 | 523 |
| Year Released | 1999 | 2008 |
| Engine Position | Front | Front |
| Engine Size | 4170 cc | 2496 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 247 HP | 175 HP |
| Engine RPM | 7000 RPM | 5800 RPM |
| Torque | 330 Nm | 230 Nm |
| Torque RPM | 3400 RPM | 3500 RPM |
| Engine Bore Size | 84.5 mm | 82 mm |
| Engine Stroke Size | 93 mm | 78.8 mm |
| Engine Compression Ratio | 11.0:1 | 11.0:1 |
| Top Speed | 250 km/hour | 230 km/hour |
| Acceleration 0-100mph | 6.6 seconds | 9.3 seconds |
| Drive Type | AWD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1750 kg | 1500 kg |
| Vehicle Length | 5040 mm | 4850 mm |
| Vehicle Width | 1890 mm | 1470 mm |
| Vehicle Height | 1420 mm | 1850 mm |
| Wheelbase Size | 2890 mm | 2890 mm |
| Fuel Consumption Overall | 13.9 L/100km | 9.3 L/100km |
| Fuel Tank Capacity | 90 L | 70 L |
