2006 Audi S4 vs. 2013 Audi A8
To start off, 2013 Audi A8 is newer by 7 year(s). Which means there will be less support and parts availability for 2006 Audi S4. In addition, the cost of maintenance, including insurance, on 2006 Audi S4 would be higher. At 4,163 cc (8 cylinders), 2006 Audi S4 is equipped with a bigger engine. In terms of performance, 2013 Audi A8 (367 HP @ 6800 RPM) has 27 more horse power than 2006 Audi S4. (340 HP @ 7000 RPM) In normal driving conditions, 2013 Audi A8 should accelerate faster than 2006 Audi S4. With that said, vehicle weight also plays an important factor in acceleration. 2013 Audi A8 weights approximately 494 kg more than 2006 Audi S4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2013 Audi A8 is all wheel drive (AWD), it will have significant more traction and grip than 2006 Audi S4. In wet, icy, snow, or gravel driving conditions, 2013 Audi A8 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, 2013 Audi A8 (445 Nm) has 35 more torque (in Nm) than 2006 Audi S4. (410 Nm). This means 2013 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2006 Audi S4.
Compare all specifications:
| 2006 Audi S4 | 2013 Audi A8 | |
| Make | Audi | Audi |
| Model | S4 | A8 |
| Year Released | 2006 | 2013 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 3991 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | W |
| Valves per Cylinder | 5 valves | 8 valves |
| Horse Power | 340 HP | 367 HP |
| Engine RPM | 7000 RPM | 6800 RPM |
| Torque | 410 Nm | 445 Nm |
| Engine Bore Size | 84.6 mm | 84.5 mm |
| Engine Stroke Size | 93 mm | 89.5 mm |
| Engine Compression Ratio | 11.0:1 | 10.1:1 |
| Drive Type | Front | AWD |
| Transmission Type | Manual | CVT |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1530 kg | 2024 kg |
| Vehicle Length | 4590 mm | 5267 mm |
| Vehicle Width | 1790 mm | 2111 mm |
| Vehicle Height | 1420 mm | 1471 mm |
| Wheelbase Size | 2660 mm | 3122 mm |
| Fuel Consumption Highway | 11.2 L/100km | 7.9 L/100km |
| Fuel Consumption City | 15.7 L/100km | 12 L/100km |
