2009 Audi A8 vs. 2012 Audi RS5
To start off, 2012 Audi RS5 is newer by 3 year(s). Which means there will be less support and parts availability for 2009 Audi A8. In addition, the cost of maintenance, including insurance, on 2009 Audi A8 would be higher. At 4,200 cc (8 cylinders), 2012 Audi RS5 is equipped with a bigger engine. In terms of performance, 2012 Audi RS5 (354 HP @ 7000 RPM) has 83 more horse power than 2009 Audi A8. (271 HP @ 3750 RPM) In normal driving conditions, 2012 Audi RS5 should accelerate faster than 2009 Audi A8. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi A8 weights approximately 190 kg more than 2012 Audi RS5.
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 A8 (650 Nm @ 1800 RPM) has 210 more torque (in Nm) than 2012 Audi RS5. (440 Nm @ 3500 RPM). This means 2009 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2012 Audi RS5. 2009 Audi A8 has automatic transmission and 2012 Audi RS5 has manual transmission. 2012 Audi RS5 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 Audi A8 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 Audi A8 | 2012 Audi RS5 | |
| Make | Audi | Audi |
| Model | A8 | RS5 |
| Year Released | 2009 | 2012 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 3936 cc | 4200 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 271 HP | 354 HP |
| Engine RPM | 3750 RPM | 7000 RPM |
| Torque | 650 Nm | 440 Nm |
| Torque RPM | 1800 RPM | 3500 RPM |
| Fuel Type | Diesel | Gasoline |
| Drive Type | 4WD | AWD |
| Transmission Type | Automatic | 6-speed manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1940 kg | 1750 kg |
| Vehicle Length | 5060 mm | 4625 mm |
| Vehicle Width | 1900 mm | 1854 mm |
| Vehicle Height | 1450 mm | 1372 mm |
| Wheelbase Size | 2950 mm | 2751 mm |
| Fuel Tank Capacity | 90 L | 63 L |
