2008 Audi A4 vs. 2009 Audi RS6
To start off, 2009 Audi RS6 is newer by 1 year(s). Which means there will be less support and parts availability for 2008 Audi A4. In addition, the cost of maintenance, including insurance, on 2008 Audi A4 would be higher. At 4,991 cc (10 cylinders), 2009 Audi RS6 is equipped with a bigger engine. In terms of performance, 2009 Audi RS6 (572 HP @ 6250 RPM) has 385 more horse power than 2008 Audi A4. (187 HP @ 5700 RPM) In normal driving conditions, 2009 Audi RS6 should accelerate faster than 2008 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi RS6 weights approximately 578 kg more than 2008 Audi A4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 Audi RS6 is four wheel drive (4WD), it will have significant more traction and grip than 2008 Audi A4. In wet, icy, snow, or gravel driving conditions, 2009 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, 2009 Audi RS6 (650 Nm @ 1500 RPM) has 410 more torque (in Nm) than 2008 Audi A4. (240 Nm @ 1950 RPM). This means 2009 Audi RS6 will have an easier job in driving up hills or pulling heavy equipment than 2008 Audi A4. 2009 Audi RS6 has automatic transmission and 2008 Audi A4 has manual transmission. 2008 Audi A4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 Audi RS6 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2008 Audi A4 | 2009 Audi RS6 | |
| Make | Audi | Audi |
| Model | A4 | RS6 |
| Year Released | 2008 | 2009 |
| Body Type | Station Wagon | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 1781 cc | 4991 cc |
| Engine Cylinders | 4 cylinders | 10 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 187 HP | 572 HP |
| Engine RPM | 5700 RPM | 6250 RPM |
| Torque | 240 Nm | 650 Nm |
| Torque RPM | 1950 RPM | 1500 RPM |
| Engine Bore Size | 81 mm | 84.5 mm |
| Engine Stroke Size | 86.4 mm | 89 mm |
| Engine Compression Ratio | 9.0:1 | 10.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 236 km/hour | 280 km/hour |
| Acceleration 0-100mph | 8.5 seconds | 4.6 seconds |
| Drive Type | Front | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1450 kg | 2028 kg |
| Vehicle Length | 4550 mm | 4930 mm |
| Vehicle Width | 1780 mm | 1900 mm |
| Vehicle Height | 1430 mm | 1470 mm |
| Wheelbase Size | 2660 mm | 2850 mm |
| Fuel Consumption Overall | 8.3 L/100km | 14 L/100km |
| Fuel Tank Capacity | 70 L | 80 L |
