2004 Audi A6 vs. 2009 Audi S4
To start off, 2009 Audi S4 is newer by 5 year(s). Which means there will be less support and parts availability for 2004 Audi A6. In addition, the cost of maintenance, including insurance, on 2004 Audi A6 would be higher. At 4,172 cc (8 cylinders), 2004 Audi A6 is equipped with a bigger engine. In terms of performance, 2009 Audi S4 (340 HP @ 6800 RPM) has 44 more horse power than 2004 Audi A6. (296 HP @ 6200 RPM) In normal driving conditions, 2009 Audi S4 should accelerate faster than 2004 Audi A6. With that said, vehicle weight also plays an important factor in acceleration. 2004 Audi A6 weights approximately 840 kg more than 2009 Audi S4.
Both vehicles are four wheel drive (4WD) - it offers better handling, traction, and control in all driving conditions compared with front wheel drive or rear wheel drive vehicles. 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 10 more torque (in Nm) than 2004 Audi A6. (400 Nm @ 3000 RPM). This means 2009 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 2004 Audi A6.
Compare all specifications:
| 2004 Audi A6 | 2009 Audi S4 | |
| Make | Audi | Audi |
| Model | A6 | S4 |
| Year Released | 2004 | 2009 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 4172 cc | 4161 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 5 valves |
| Horse Power | 296 HP | 340 HP |
| Engine RPM | 6200 RPM | 6800 RPM |
| Torque | 400 Nm | 410 Nm |
| Torque RPM | 3000 RPM | 3500 RPM |
| Engine Bore Size | 84.5 mm | 84.5 mm |
| Engine Stroke Size | 93 mm | 92.8 mm |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | 4WD | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1770 kg | 930 kg |
| Vehicle Length | 4920 mm | 4580 mm |
| Vehicle Width | 1860 mm | 1780 mm |
| Vehicle Height | 1470 mm | 1400 mm |
| Wheelbase Size | 2850 mm | 2660 mm |
| Fuel Consumption | 8.8 L/100km | 11.2 L/100km |
| Fuel Consumption City | 16.5 L/100km | 16.8 L/100km |
| Fuel Consumption Overall | 11.6 L/100km | 14.7 L/100km |
| Fuel Tank Capacity | 82 L | 63 L |
