2003 Audi A8 vs. 2005 Audi RS6
To start off, 2005 Audi RS6 is newer by 2 year(s). Which means there will be less support and parts availability for 2003 Audi A8. In addition, the cost of maintenance, including insurance, on 2003 Audi A8 would be higher. At 4,171 cc (8 cylinders), 2005 Audi RS6 is equipped with a bigger engine. In terms of performance, 2005 Audi RS6 (444 HP @ 5700 RPM) has 227 more horse power than 2003 Audi A8. (217 HP @ 6300 RPM) In normal driving conditions, 2005 Audi RS6 should accelerate faster than 2003 Audi A8. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi RS6 weights approximately 155 kg more than 2003 Audi A8. 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 2003 Audi A8. 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 (560 Nm @ 1950 RPM) has 260 more torque (in Nm) than 2003 Audi A8. (300 Nm @ 8200 RPM). This means 2005 Audi RS6 will have an easier job in driving up hills or pulling heavy equipment than 2003 Audi A8. 2005 Audi RS6 has automatic transmission and 2003 Audi A8 has manual transmission. 2003 Audi A8 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:
| 2003 Audi A8 | 2005 Audi RS6 | |
| Make | Audi | Audi |
| Model | A8 | RS6 |
| Year Released | 2003 | 2005 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2976 cc | 4171 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 5 valves |
| Horse Power | 217 HP | 444 HP |
| Engine RPM | 6300 RPM | 5700 RPM |
| Torque | 300 Nm | 560 Nm |
| Torque RPM | 8200 RPM | 1950 RPM |
| Drive Type | Front | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1670 kg | 1825 kg |
| Vehicle Length | 5060 mm | 4800 mm |
| Vehicle Height | 1450 mm | 1460 mm |
| Wheelbase Size | 2950 mm | 2770 mm |
| Fuel Consumption Overall | 9.6 L/100km | 14.6 L/100km |
| Fuel Tank Capacity | 70 L | 82 L |
