2009 Audi A5 vs. 2006 Audi S4
To start off, 2009 Audi A5 is newer by 3 year(s). Which means there will be less support and parts availability for 2006 Audi S4. In addition, the cost of maintenance, including insurance, on 2006 Audi S4 would be higher. At 4,162 cc (8 cylinders), 2006 Audi S4 is equipped with a bigger engine. In terms of performance, 2006 Audi S4 (339 HP @ 7000 RPM) has 152 more horse power than 2009 Audi A5. (187 HP @ 3500 RPM) In normal driving conditions, 2006 Audi S4 should accelerate faster than 2009 Audi A5. With that said, vehicle weight also plays an important factor in acceleration. 2006 Audi S4 weights approximately 160 kg more than 2009 Audi A5. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2006 Audi S4 is four wheel drive (4WD), it will have significant more traction and grip than 2009 Audi A5. In wet, icy, snow, or gravel driving conditions, 2006 Audi S4 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, 2006 Audi S4 (410 Nm @ 3500 RPM) has 10 more torque (in Nm) than 2009 Audi A5. (400 Nm @ 1400 RPM). This means 2006 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 2009 Audi A5.
Compare all specifications:
| 2009 Audi A5 | 2006 Audi S4 | |
| Make | Audi | Audi |
| Model | A5 | S4 |
| Year Released | 2009 | 2006 |
| Body Type | Coupe | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2698 cc | 4162 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 5 valves |
| Horse Power | 187 HP | 339 HP |
| Engine RPM | 3500 RPM | 7000 RPM |
| Torque | 400 Nm | 410 Nm |
| Torque RPM | 1400 RPM | 3500 RPM |
| Engine Bore Size | 83 mm | 84.5 mm |
| Engine Stroke Size | 83.1 mm | 92.8 mm |
| Engine Compression Ratio | 16.8:1 | 11.0:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Top Speed | 232 km/hour | 250 km/hour |
| Acceleration 0-100mph | 7.9 seconds | 5.6 seconds |
| Drive Type | Front | 4WD |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1575 kg | 1735 kg |
| Vehicle Length | 4630 mm | 4580 mm |
| Vehicle Width | 1860 mm | 1790 mm |
| Vehicle Height | 1380 mm | 1420 mm |
| Wheelbase Size | 2760 mm | 2660 mm |
| Fuel Consumption Overall | 6.7 L/100km | 13.4 L/100km |
| Fuel Tank Capacity | 65 L | 63 L |
