2009 Audi A6 vs. 2005 Audi RS4
To start off, 2009 Audi A6 is newer by 4 year(s). Which means there will be less support and parts availability for 2005 Audi RS4. In addition, the cost of maintenance, including insurance, on 2005 Audi RS4 would be higher. At 2,698 cc (6 cylinders), 2009 Audi A6 is equipped with a bigger engine. In terms of performance, 2005 Audi RS4 (376 HP @ 6300 RPM) has 198 more horse power than 2009 Audi A6. (178 HP @ 3300 RPM) In normal driving conditions, 2005 Audi RS4 should accelerate faster than 2009 Audi A6. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi RS4 weights approximately 690 kg more than 2009 Audi A6. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 Audi RS4 is four wheel drive (4WD), it will have significant more traction and grip than 2009 Audi A6. In wet, icy, snow, or gravel driving conditions, 2005 Audi RS4 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, 2005 Audi RS4 (449 Nm @ 2500 RPM) has 69 more torque (in Nm) than 2009 Audi A6. (380 Nm @ 1400 RPM). This means 2005 Audi RS4 will have an easier job in driving up hills or pulling heavy equipment than 2009 Audi A6.
Compare all specifications:
| 2009 Audi A6 | 2005 Audi RS4 | |
| Make | Audi | Audi |
| Model | A6 | RS4 |
| Year Released | 2009 | 2005 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2698 cc | 2671 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 5 valves |
| Horse Power | 178 HP | 376 HP |
| Engine RPM | 3300 RPM | 6300 RPM |
| Torque | 380 Nm | 449 Nm |
| Torque RPM | 1400 RPM | 2500 RPM |
| Engine Compression Ratio | 17.0:1 | 12.5:1 |
| Fuel Type | Diesel | Gasoline |
| Top Speed | 225 km/hour | 245 km/hour |
| Acceleration 0-100mph | 8.1 seconds | 4.8 seconds |
| Drive Type | Front | 4WD |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 895 kg | 1585 kg |
| Vehicle Length | 4920 mm | 4600 mm |
| Vehicle Width | 1860 mm | 1820 mm |
| Vehicle Height | 1470 mm | 1420 mm |
| Wheelbase Size | 2850 mm | 2610 mm |
| Fuel Consumption Overall | 7 L/100km | 13.7 L/100km |
| Fuel Tank Capacity | 70 L | 55 L |
