1999 Audi S8 vs. 2009 Audi A4
To start off, 2009 Audi A4 is newer by 10 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, 2009 Audi A4 (261 HP @ 6500 RPM) has 14 more horse power than 1999 Audi S8. (247 HP @ 7000 RPM) In normal driving conditions, 2009 Audi A4 should accelerate faster than 1999 Audi S8. With that said, vehicle weight also plays an important factor in acceleration. 1999 Audi S8 weights approximately 120 kg more than 2009 Audi A4.
Because 1999 Audi S8 is all wheel drive (AWD), it will have significant more traction and grip than 2009 Audi A4. 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, both vehicles can yield 330 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:
| 1999 Audi S8 | 2009 Audi A4 | |
| Make | Audi | Audi |
| Model | S8 | A4 |
| Year Released | 1999 | 2009 |
| Body Type | Sedan | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 4170 cc | 3197 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 247 HP | 261 HP |
| Engine RPM | 7000 RPM | 6500 RPM |
| Torque | 330 Nm | 330 Nm |
| Torque RPM | 3400 RPM | 3000 RPM |
| Engine Bore Size | 84.5 mm | 84.6 mm |
| Engine Stroke Size | 93 mm | 92.8 mm |
| Engine Compression Ratio | 11.0:1 | 12.5:1 |
| Acceleration 0-100mph | 6.6 seconds | 6.4 seconds |
| Drive Type | AWD | Front |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1750 kg | 1630 kg |
| Vehicle Length | 5040 mm | 4710 mm |
| Vehicle Width | 1890 mm | 1830 mm |
| Vehicle Height | 1420 mm | 1440 mm |
| Wheelbase Size | 2890 mm | 2810 mm |
| Fuel Consumption Overall | 13.9 L/100km | 9.1 L/100km |
| Fuel Tank Capacity | 90 L | 64 L |
