2008 Audi S4 vs. 2009 Audi S6
To start off, 2009 Audi S6 is newer by 1 year(s). Which means there will be less support and parts availability for 2008 Audi S4. In addition, the cost of maintenance, including insurance, on 2008 Audi S4 would be higher. At 4,172 cc (8 cylinders), 2009 Audi S6 is equipped with a bigger engine. In terms of performance, 2008 Audi S4 (340 HP @ 7000 RPM) has 5 more horse power than 2009 Audi S6. (335 HP @ 7000 RPM). In normal driving conditions, 2008 Audi S4 should accelerate faster than 2009 Audi S6. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi S6 weights approximately 110 kg more than 2008 Audi S4.
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 (420 Nm @ 3400 RPM) has 10 more torque (in Nm) than 2008 Audi S4. (410 Nm @ 3500 RPM). This means 2009 Audi S6 will have an easier job in driving up hills or pulling heavy equipment than 2008 Audi S4.
Compare all specifications:
| 2008 Audi S4 | 2009 Audi S6 | |
| Make | Audi | Audi |
| Model | S4 | S6 |
| Year Released | 2008 | 2009 |
| Body Type | Sedan | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 4161 cc | 4172 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 5 valves |
| Horse Power | 340 HP | 335 HP |
| Engine RPM | 7000 RPM | 7000 RPM |
| Torque | 410 Nm | 420 Nm |
| Torque RPM | 3500 RPM | 3400 RPM |
| Engine Bore Size | 84.5 mm | 84.6 mm |
| Engine Stroke Size | 92.8 mm | 93 mm |
| Fuel Type | Gasoline | Gasoline - Premium |
| Acceleration 0-100mph | 5.8 seconds | 6.8 seconds |
| Drive Type | 4WD | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1705 kg | 1815 kg |
| Vehicle Length | 4590 mm | 4840 mm |
| Vehicle Width | 1780 mm | 1860 mm |
| Vehicle Height | 1430 mm | 1450 mm |
| Wheelbase Size | 2650 mm | 2770 mm |
| Fuel Consumption Overall | 12.3 L/100km | 14.8 L/100km |
| Fuel Tank Capacity | 63 L | 82 L |
