2005 Audi S4 vs. 2009 Audi S6
To start off, 2009 Audi S6 is newer by 4 year(s). Which means there will be less support and parts availability for 2005 Audi S4. In addition, the cost of maintenance, including insurance, on 2005 Audi S4 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 95 more horse power than 2005 Audi S4. (340 HP @ 7000 RPM) In normal driving conditions, 2009 Audi S6 should accelerate faster than 2005 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 (540 Nm @ 3000 RPM) has 130 more torque (in Nm) than 2005 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 2005 Audi S4. 2009 Audi S6 has automatic transmission and 2005 Audi S4 has manual transmission. 2005 Audi S4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 Audi S6 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2005 Audi S4 | 2009 Audi S6 | |
| Make | Audi | Audi |
| Model | S4 | S6 |
| Year Released | 2005 | 2009 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 5204 cc |
| Engine Cylinders | 8 cylinders | 10 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 340 HP | 435 HP |
| Engine RPM | 7000 RPM | 6800 RPM |
| Torque | 410 Nm | 540 Nm |
| Torque RPM | 3500 RPM | 3000 RPM |
| Engine Bore Size | 85 mm | 84.5 mm |
| Engine Stroke Size | 93 mm | 92.8 mm |
| Engine Compression Ratio | 11.0:1 | 12.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | 4WD | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Length | 4580 mm | 4920 mm |
| Vehicle Width | 1790 mm | 2020 mm |
| Vehicle Height | 1450 mm | 1450 mm |
| Wheelbase Size | 2660 mm | 2850 mm |
| Fuel Consumption Highway | 11.4 L/100km | 11.3 L/100km |
| Fuel Consumption City | 15.8 L/100km | 16.9 L/100km |
| Fuel Consumption Overall | 14 L/100km | 14.8 L/100km |
| Fuel Tank Capacity | 63 L | 80 L |
