2009 Audi A4 vs. 2004 Audi A6
To start off, 2009 Audi A4 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 2,965 cc (6 cylinders), 2009 Audi A4 is equipped with a bigger engine. In terms of performance, 2009 Audi A4 (237 HP @ 4000 RPM) has 57 more horse power than 2004 Audi A6. (180 HP @ 6000 RPM). In normal driving conditions, 2009 Audi A4 should accelerate faster than 2004 Audi A6. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi A4 weights approximately 33 kg more than 2004 Audi A6. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 Audi A4 is four wheel drive (4WD), it will have significant more traction and grip than 2004 Audi A6. In wet, icy, snow, or gravel driving conditions, 2009 Audi A4 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, 2009 Audi A4 (500 Nm @ 1500 RPM) has 265 more torque (in Nm) than 2004 Audi A6. (235 Nm @ 3000 RPM). This means 2009 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 2004 Audi A6.
Compare all specifications:
| 2009 Audi A4 | 2004 Audi A6 | |
| Make | Audi | Audi |
| Model | A4 | A6 |
| Year Released | 2009 | 2004 |
| Body Type | Station Wagon | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 2965 cc | 2496 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 237 HP | 180 HP |
| Engine RPM | 4000 RPM | 6000 RPM |
| Torque | 500 Nm | 235 Nm |
| Torque RPM | 1500 RPM | 3000 RPM |
| Engine Bore Size | 83 mm | 81 mm |
| Engine Stroke Size | 91.4 mm | 77.4 mm |
| Engine Compression Ratio | 16.8:1 | 10.3:1 |
| Top Speed | 250 km/hour | 221 km/hour |
| Acceleration 0-100mph | 6.3 seconds | 9.5 seconds |
| Drive Type | 4WD | Front |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1695 kg | 1662 kg |
| Vehicle Length | 4710 mm | 4940 mm |
| Vehicle Width | 1830 mm | 1860 mm |
| Vehicle Height | 1440 mm | 1470 mm |
| Wheelbase Size | 2810 mm | 2660 mm |
| Fuel Consumption Overall | 7.1 L/100km | 9.6 L/100km |
| Fuel Tank Capacity | 64 L | 70 L |
