2009 Audi A6 vs. 2004 Audi A4
To start off, 2009 Audi A6 is newer by 5 year(s). Which means there will be less support and parts availability for 2004 Audi A4. In addition, the cost of maintenance, including insurance, on 2004 Audi A4 would be higher. At 4,172 cc (8 cylinders), 2009 Audi A6 is equipped with a bigger engine. In terms of performance, 2009 Audi A6 (296 HP @ 6200 RPM) has 99 more horse power than 2004 Audi A4. (197 HP @ 5100 RPM). In normal driving conditions, 2009 Audi A6 should accelerate faster than 2004 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi A6 weights approximately 280 kg more than 2004 Audi A4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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 A6 (400 Nm @ 3000 RPM) has 120 more torque (in Nm) than 2004 Audi A4. (280 Nm @ 1800 RPM). This means 2009 Audi A6 will have an easier job in driving up hills or pulling heavy equipment than 2004 Audi A4.
Compare all specifications:
| 2009 Audi A6 | 2004 Audi A4 | |
| Make | Audi | Audi |
| Model | A6 | A4 |
| Year Released | 2009 | 2004 |
| Body Type | Station Wagon | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4172 cc | 1984 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 296 HP | 197 HP |
| Engine RPM | 6200 RPM | 5100 RPM |
| Torque | 400 Nm | 280 Nm |
| Torque RPM | 3000 RPM | 1800 RPM |
| Engine Bore Size | 84.6 mm | 82.5 mm |
| Engine Stroke Size | 93 mm | 92.8 mm |
| Engine Compression Ratio | 11.0:1 | 10.5:1 |
| Acceleration 0-100mph | 7.1 seconds | 7.7 seconds |
| Drive Type | 4WD | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1815 kg | 1535 kg |
| Vehicle Length | 4840 mm | 4590 mm |
| Vehicle Width | 1860 mm | 1780 mm |
| Vehicle Height | 1460 mm | 1430 mm |
| Wheelbase Size | 2770 mm | 2470 mm |
| Fuel Consumption Overall | 13.1 L/100km | 9.6 L/100km |
| Fuel Tank Capacity | 80 L | 63 L |
