2009 Audi A8 vs. 2012 Audi S4
To start off, 2012 Audi S4 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 4,163 cc (8 cylinders), 2009 Audi A8 is equipped with a bigger engine. In terms of performance, 2009 Audi A8 (350 HP @ 6800 RPM) has 17 more horse power than 2012 Audi S4. (333 HP @ 5500 RPM). In normal driving conditions, 2009 Audi A8 should accelerate faster than 2012 Audi S4.
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 (441 Nm @ 3500 RPM) has 1 more torque (in Nm) than 2012 Audi S4. (440 Nm @ 2900 RPM). This means 2009 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2012 Audi S4. 2009 Audi A8 has automatic transmission and 2012 Audi S4 has manual transmission. 2012 Audi S4 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 S4 | |
| Make | Audi | Audi |
| Model | A8 | S4 |
| Year Released | 2009 | 2012 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 3000 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 350 HP | 333 HP |
| Engine RPM | 6800 RPM | 5500 RPM |
| Torque | 441 Nm | 440 Nm |
| Torque RPM | 3500 RPM | 2900 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | AWD |
| Transmission Type | Automatic | 6-speed manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Length | 5200 mm | 4704 mm |
| Vehicle Width | 1900 mm | 1829 mm |
| Vehicle Height | 1460 mm | 1427 mm |
| Wheelbase Size | 3080 mm | 2809 mm |
| Fuel Consumption Highway | 10.2 L/100km | 8.7 L/100km |
| Fuel Consumption City | 14.7 L/100km | 13.1 L/100km |
| Fuel Tank Capacity | 90 L | 64 L |
