2009 Audi S4 vs. 2011 Audi A4
To start off, 2011 Audi A4 is newer by 2 year(s). Which means there will be less support and parts availability for 2009 Audi S4. In addition, the cost of maintenance, including insurance, on 2009 Audi S4 would be higher. At 4,161 cc (8 cylinders), 2009 Audi S4 is equipped with a bigger engine. In terms of performance, 2009 Audi S4 (340 HP @ 6800 RPM) has 129 more horse power than 2011 Audi A4. (211 HP @ 4300 RPM). In normal driving conditions, 2009 Audi S4 should accelerate faster than 2011 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2011 Audi A4 weights approximately 715 kg more than 2009 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 S4 (410 Nm @ 3500 RPM) has 61 more torque (in Nm) than 2011 Audi A4. (349 Nm @ 1500 RPM). This means 2009 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 2011 Audi A4. 2009 Audi S4 has automatic transmission and 2011 Audi A4 has manual transmission. 2011 Audi A4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 Audi S4 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 Audi S4 | 2011 Audi A4 | |
| Make | Audi | Audi |
| Model | S4 | A4 |
| Year Released | 2009 | 2011 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4161 cc | 2000 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 340 HP | 211 HP |
| Engine RPM | 6800 RPM | 4300 RPM |
| Torque | 410 Nm | 349 Nm |
| Torque RPM | 3500 RPM | 1500 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | AWD |
| Transmission Type | Automatic | Manual |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 930 kg | 1645 kg |
| Vehicle Length | 4580 mm | 4704 mm |
| Vehicle Width | 1780 mm | 1829 mm |
| Vehicle Height | 1400 mm | 1427 mm |
| Wheelbase Size | 2660 mm | 2809 mm |
| Fuel Consumption Highway | 11.2 L/100km | 7.6 L/100km |
| Fuel Consumption City | 16.8 L/100km | 11.2 L/100km |
| Fuel Tank Capacity | 63 L | 65 L |
