2005 Audi RS4 vs. 2011 Audi A8
To start off, 2011 Audi A8 is newer by 6 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 4,200 cc (8 cylinders), 2011 Audi A8 is equipped with a bigger engine. In terms of performance, 2005 Audi RS4 (376 HP @ 6300 RPM) has 4 more horse power than 2011 Audi A8. (372 HP @ 6800 RPM). In normal driving conditions, 2005 Audi RS4 should accelerate faster than 2011 Audi A8. With that said, vehicle weight also plays an important factor in acceleration. 2011 Audi A8 weights approximately 415 kg more than 2005 Audi RS4.
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 5 more torque (in Nm) than 2011 Audi A8. (444 Nm @ 3500 RPM). This means 2005 Audi RS4 will have an easier job in driving up hills or pulling heavy equipment than 2011 Audi A8. 2011 Audi A8 has automatic transmission and 2005 Audi RS4 has manual transmission. 2005 Audi RS4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2011 Audi A8 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2005 Audi RS4 | 2011 Audi A8 | |
| Make | Audi | Audi |
| Model | RS4 | A8 |
| Year Released | 2005 | 2011 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2671 cc | 4200 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 376 HP | 372 HP |
| Engine RPM | 6300 RPM | 6800 RPM |
| Torque | 449 Nm | 444 Nm |
| Torque RPM | 2500 RPM | 3500 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | AWD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1585 kg | 2000 kg |
| Vehicle Length | 4600 mm | 5136 mm |
| Vehicle Width | 1820 mm | 1948 mm |
| Vehicle Height | 1420 mm | 1461 mm |
| Wheelbase Size | 2610 mm | 2992 mm |
| Fuel Consumption Highway | 10.1 L/100km | 8.7 L/100km |
| Fuel Consumption City | 19.7 L/100km | 13.8 L/100km |
| Fuel Tank Capacity | 55 L | 90 L |
