1999 Audi S8 vs. 2007 Cadillac STS
To start off, 2007 Cadillac STS is newer by 8 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, 2007 Cadillac STS (255 HP @ 6500 RPM) has 8 more horse power than 1999 Audi S8. (247 HP @ 7000 RPM) In normal driving conditions, 2007 Cadillac STS should accelerate faster than 1999 Audi S8.
Because 1999 Audi S8 is all wheel drive (AWD), it will have significant more traction and grip than 2007 Cadillac STS. 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, 2007 Cadillac STS (342 Nm @ 3200 RPM) has 12 more torque (in Nm) than 1999 Audi S8. (330 Nm @ 3400 RPM). This means 2007 Cadillac STS will have an easier job in driving up hills or pulling heavy equipment than 1999 Audi S8.
Compare all specifications:
| 1999 Audi S8 | 2007 Cadillac STS | |
| Make | Audi | Cadillac |
| Model | S8 | STS |
| Year Released | 1999 | 2007 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4170 cc | 3556 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 247 HP | 255 HP |
| Engine RPM | 7000 RPM | 6500 RPM |
| Torque | 330 Nm | 342 Nm |
| Torque RPM | 3400 RPM | 3200 RPM |
| Engine Bore Size | 84.5 mm | 94 mm |
| Engine Stroke Size | 93 mm | 86 mm |
| Engine Compression Ratio | 11.0:1 | 10.2:1 |
| Drive Type | AWD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Length | 5040 mm | 4990 mm |
| Vehicle Width | 1890 mm | 1850 mm |
| Vehicle Height | 1420 mm | 1470 mm |
| Wheelbase Size | 2890 mm | 2960 mm |
| Fuel Consumption Highway | 9.5 L/100km | 8.7 L/100km |
| Fuel Consumption City | 21.7 L/100km | 13.1 L/100km |
| Fuel Consumption Overall | 13.9 L/100km | 11.2 L/100km |
| Fuel Tank Capacity | 90 L | 64 L |
