2005 Audi A6 vs. 2006 Audi S4
To start off, 2006 Audi S4 is newer by 1 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), 2006 Audi S4 is equipped with a bigger engine. In terms of performance, 2006 Audi S4 (340 HP @ 7000 RPM) has 93 more horse power than 2005 Audi A6. (247 HP @ 6300 RPM) In normal driving conditions, 2006 Audi S4 should accelerate faster than 2005 Audi A6.
Because 2005 Audi A6 is four wheel drive (4WD), it will have significant more traction and grip than 2006 Audi S4. In wet, icy, snow, or gravel driving conditions, 2005 Audi A6 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, 2006 Audi S4 (410 Nm @ 3500 RPM) has 90 more torque (in Nm) than 2005 Audi A6. (320 Nm @ 3250 RPM). This means 2006 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 2006 Audi S4 has manual transmission. 2006 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:
| 2005 Audi A6 | 2006 Audi S4 | |
| Make | Audi | Audi |
| Model | A6 | S4 |
| Year Released | 2005 | 2006 |
| Body Type | Station Wagon | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2976 cc | 4163 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 5 valves |
| Horse Power | 247 HP | 340 HP |
| Engine RPM | 6300 RPM | 7000 RPM |
| Torque | 320 Nm | 410 Nm |
| Torque RPM | 3250 RPM | 3500 RPM |
| Engine Bore Size | 84.5 mm | 84.5 mm |
| Engine Stroke Size | 92.8 mm | 92.8 mm |
| Engine Compression Ratio | 13.0:1 | 11.0:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Length | 4940 mm | 4590 mm |
| Vehicle Width | 1870 mm | 1780 mm |
| Vehicle Height | 1470 mm | 1430 mm |
| Wheelbase Size | 2850 mm | 2650 mm |
| Fuel Tank Capacity | 70 L | 63 L |
