2008 Audi S4 vs. 2009 Audi A4
To start off, 2009 Audi A4 is newer by 1 year(s). Which means there will be less support and parts availability for 2008 Audi S4. In addition, the cost of maintenance, including insurance, on 2008 Audi S4 would be higher. At 4,124 cc (8 cylinders), 2008 Audi S4 is equipped with a bigger engine. In terms of performance, 2008 Audi S4 (456 HP @ 6800 RPM) has 298 more horse power than 2009 Audi A4. (158 HP @ 4500 RPM). In normal driving conditions, 2008 Audi S4 should accelerate faster than 2009 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2008 Audi S4 weights approximately 965 kg more than 2009 Audi A4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2008 Audi S4 is four wheel drive (4WD), it will have significant more traction and grip than 2009 Audi A4. In wet, icy, snow, or gravel driving conditions, 2008 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, 2008 Audi S4 (302 Nm @ 3500 RPM) has 52 more torque (in Nm) than 2009 Audi A4. (250 Nm @ 1500 RPM). This means 2008 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 2009 Audi A4.
Compare all specifications:
| 2008 Audi S4 | 2009 Audi A4 | |
| Make | Audi | Audi |
| Model | S4 | A4 |
| Year Released | 2008 | 2009 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4124 cc | 1798 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 456 HP | 158 HP |
| Engine RPM | 6800 RPM | 4500 RPM |
| Torque | 302 Nm | 250 Nm |
| Torque RPM | 3500 RPM | 1500 RPM |
| Engine Compression Ratio | 11.0:1 | 9.6:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Top Speed | 249 km/hour | 218 km/hour |
| Acceleration 0-100mph | 6.1 seconds | 8.9 seconds |
| Drive Type | 4WD | Front |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1895 kg | 930 kg |
| Vehicle Length | 4580 mm | 4710 mm |
| Vehicle Width | 1400 mm | 2010 mm |
| Vehicle Height | 1400 mm | 1430 mm |
| Wheelbase Size | 2660 mm | 2810 mm |
| Fuel Consumption Overall | 16.4 L/100km | 7.4 L/100km |
| Fuel Tank Capacity | 70 L | 65 L |
