2005 Audi RS6 vs. 2009 Audi A4
To start off, 2009 Audi A4 is newer by 4 year(s). Which means there will be less support and parts availability for 2005 Audi RS6. In addition, the cost of maintenance, including insurance, on 2005 Audi RS6 would be higher. At 4,172 cc (8 cylinders), 2005 Audi RS6 is equipped with a bigger engine. In terms of performance, 2005 Audi RS6 (444 HP @ 5700 RPM) has 236 more horse power than 2009 Audi A4. (208 HP @ 4300 RPM). In normal driving conditions, 2005 Audi RS6 should accelerate faster than 2009 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi RS6 weights approximately 320 kg more than 2009 Audi A4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 Audi RS6 is four wheel drive (4WD), it will have significant more traction and grip than 2009 Audi A4. In wet, icy, snow, or gravel driving conditions, 2005 Audi RS6 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 RS6 (580 Nm @ 1950 RPM) has 230 more torque (in Nm) than 2009 Audi A4. (350 Nm @ 1500 RPM). This means 2005 Audi RS6 will have an easier job in driving up hills or pulling heavy equipment than 2009 Audi A4. 2005 Audi RS6 has automatic transmission and 2009 Audi A4 has manual transmission. 2009 Audi A4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2005 Audi RS6 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2005 Audi RS6 | 2009 Audi A4 | |
| Make | Audi | Audi |
| Model | RS6 | A4 |
| Year Released | 2005 | 2009 |
| Body Type | Station Wagon | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 4172 cc | 1984 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 444 HP | 208 HP |
| Engine RPM | 5700 RPM | 4300 RPM |
| Torque | 580 Nm | 350 Nm |
| Torque RPM | 1950 RPM | 1500 RPM |
| Engine Bore Size | 84.5 mm | 82.5 mm |
| Engine Stroke Size | 93 mm | 92.8 mm |
| Engine Compression Ratio | 9.0:1 | 9.6:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 250 km/hour | 242 km/hour |
| Acceleration 0-100mph | 4.7 seconds | 7.4 seconds |
| Drive Type | 4WD | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1865 kg | 1545 kg |
| Vehicle Length | 4840 mm | 4710 mm |
| Vehicle Width | 1860 mm | 1830 mm |
| Vehicle Height | 1400 mm | 1440 mm |
| Wheelbase Size | 2760 mm | 2810 mm |
| Fuel Consumption Overall | 14.6 L/100km | 6.6 L/100km |
| Fuel Tank Capacity | 82 L | 64 L |
