2009 Audi S4 vs. 2005 Audi A6
To start off, 2009 Audi S4 is newer by 4 year(s). Which means there will be less support and parts availability for 2005 Audi A6. In addition, the cost of maintenance, including insurance, on 2005 Audi A6 would be higher. At 4,163 cc (8 cylinders), 2009 Audi S4 is equipped with a bigger engine. In terms of performance, 2009 Audi S4 (340 HP @ 7000 RPM) has 122 more horse power than 2005 Audi A6. (218 HP @ 4000 RPM). In normal driving conditions, 2009 Audi S4 should accelerate faster than 2005 Audi A6.
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 S4 (410 Nm @ 3500 RPM) has 10 more torque (in Nm) than 2005 Audi A6. (400 Nm @ 1400 RPM). This means 2009 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi A6. 2005 Audi A6 has automatic transmission and 2009 Audi S4 has manual transmission. 2009 Audi S4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2005 Audi A6 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 Audi S4 | 2005 Audi A6 | |
| Make | Audi | Audi |
| Model | S4 | A6 |
| Year Released | 2009 | 2005 |
| Body Type | Convertible | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 3189 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 340 HP | 218 HP |
| Engine RPM | 7000 RPM | 4000 RPM |
| Torque | 410 Nm | 400 Nm |
| Torque RPM | 3500 RPM | 1400 RPM |
| Engine Bore Size | 84.6 mm | 83 mm |
| Engine Stroke Size | 92.8 mm | 91.4 mm |
| Engine Compression Ratio | 18.0:1 | 17.0:1 |
| Fuel Type | Gasoline | Diesel |
| Drive Type | 4WD | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Length | 4580 mm | 4940 mm |
| Vehicle Width | 1780 mm | 1870 mm |
| Vehicle Height | 1400 mm | 1460 mm |
| Wheelbase Size | 2660 mm | 2850 mm |
| Fuel Tank Capacity | 63 L | 70 L |
