2006 Audi A4 vs. 2009 Audi S6
To start off, 2009 Audi S6 is newer by 3 year(s). Which means there will be less support and parts availability for 2006 Audi A4. In addition, the cost of maintenance, including insurance, on 2006 Audi A4 would be higher. At 5,204 cc (10 cylinders), 2009 Audi S6 is equipped with a bigger engine. In terms of performance, 2009 Audi S6 (435 HP @ 6800 RPM) has 215 more horse power than 2006 Audi A4. (220 HP @ 6300 RPM) In normal driving conditions, 2009 Audi S6 should accelerate faster than 2006 Audi A4.
Both vehicles are four wheel drive (4WD) - it offers better handling, traction, and control in all driving conditions compared with front wheel drive or rear wheel drive vehicles. 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, 2009 Audi S6 (540 Nm @ 3000 RPM) has 240 more torque (in Nm) than 2006 Audi A4. (300 Nm @ 3200 RPM). This means 2009 Audi S6 will have an easier job in driving up hills or pulling heavy equipment than 2006 Audi A4.
Compare all specifications:
| 2006 Audi A4 | 2009 Audi S6 | |
| Make | Audi | Audi |
| Model | A4 | S6 |
| Year Released | 2006 | 2009 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2981 cc | 5204 cc |
| Engine Cylinders | 6 cylinders | 10 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 220 HP | 435 HP |
| Engine RPM | 6300 RPM | 6800 RPM |
| Torque | 300 Nm | 540 Nm |
| Torque RPM | 3200 RPM | 3000 RPM |
| Engine Bore Size | 82.5 mm | 84.5 mm |
| Engine Stroke Size | 92.8 mm | 92.8 mm |
| Engine Compression Ratio | 10.5:1 | 12.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | 4WD | 4WD |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Length | 4580 mm | 4920 mm |
| Vehicle Width | 1780 mm | 2020 mm |
| Vehicle Height | 1400 mm | 1450 mm |
| Wheelbase Size | 2660 mm | 2850 mm |
| Fuel Consumption | 9.4 L/100km | 11.3 L/100km |
| Fuel Consumption City | 13.1 L/100km | 16.9 L/100km |
| Fuel Consumption Overall | 11.8 L/100km | 14.8 L/100km |
| Fuel Tank Capacity | 63 L | 80 L |
