2009 Audi A4 vs. 2006 Audi RS4
To start off, 2009 Audi A4 is newer by 3 year(s). Which means there will be less support and parts availability for 2006 Audi RS4. In addition, the cost of maintenance, including insurance, on 2006 Audi RS4 would be higher. At 4,163 cc (8 cylinders), 2006 Audi RS4 is equipped with a bigger engine. In terms of performance, 2006 Audi RS4 (414 HP @ 7800 RPM) has 86 more horse power than 2009 Audi A4. (328 HP @ 5500 RPM) In normal driving conditions, 2006 Audi RS4 should accelerate faster than 2009 Audi A4.
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 A4 (440 Nm @ 2900 RPM) has 10 more torque (in Nm) than 2006 Audi RS4. (430 Nm @ 5500 RPM). This means 2009 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 2006 Audi RS4.
Compare all specifications:
| 2009 Audi A4 | 2006 Audi RS4 | |
| Make | Audi | Audi |
| Model | A4 | RS4 |
| Year Released | 2009 | 2006 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2995 cc | 4163 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 328 HP | 414 HP |
| Engine RPM | 5500 RPM | 7800 RPM |
| Torque | 440 Nm | 430 Nm |
| Torque RPM | 2900 RPM | 5500 RPM |
| Engine Bore Size | 84.6 mm | 84.5 mm |
| Engine Stroke Size | 89 mm | 92.8 mm |
| Engine Compression Ratio | 10.3:1 | 12.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Acceleration 0-100mph | 5.1 seconds | 4.8 seconds |
| Drive Type | 4WD | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Length | 4720 mm | 4600 mm |
| Vehicle Width | 1830 mm | 1820 mm |
| Vehicle Height | 1410 mm | 1420 mm |
| Wheelbase Size | 2820 mm | 2650 mm |
| Fuel Consumption Overall | 9.7 L/100km | 13.4 L/100km |
