2005 Audi A6 vs. 2009 Audi A4
To start off, 2009 Audi A4 is newer by 4 year(s). Which means there will be less support and parts availability for 2005 Audi A6. In addition, the cost of maintenance, including insurance, on 2005 Audi A6 would be higher. At 2,669 cc (6 cylinders), 2005 Audi A6 is equipped with a bigger engine. In terms of performance, 2005 Audi A6 (180 HP @ 3300 RPM) has 39 more horse power than 2009 Audi A4. (141 HP @ 4200 RPM). In normal driving conditions, 2005 Audi A6 should accelerate faster than 2009 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi A6 weights approximately 985 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.
Both vehicles are front wheel drive (FWD). Which offers better traction when its slippery than 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, 2005 Audi A6 (380 Nm @ 1400 RPM) has 60 more torque (in Nm) than 2009 Audi A4. (320 Nm @ 1750 RPM). This means 2005 Audi A6 will have an easier job in driving up hills or pulling heavy equipment than 2009 Audi A4.
Compare all specifications:
| 2005 Audi A6 | 2009 Audi A4 | |
| Make | Audi | Audi |
| Model | A6 | A4 |
| Year Released | 2005 | 2009 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2669 cc | 1968 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 180 HP | 141 HP |
| Engine RPM | 3300 RPM | 4200 RPM |
| Torque | 380 Nm | 320 Nm |
| Torque RPM | 1400 RPM | 1750 RPM |
| Engine Bore Size | 83 mm | 81 mm |
| Engine Stroke Size | 83.1 mm | 95.5 mm |
| Engine Compression Ratio | 17.0:1 | 16.5:1 |
| Fuel Type | Diesel | Diesel |
| Top Speed | 225 km/hour | 215 km/hour |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1880 kg | 895 kg |
| Vehicle Length | 4920 mm | 4710 mm |
| Vehicle Width | 1860 mm | 2010 mm |
| Vehicle Height | 1460 mm | 1430 mm |
| Wheelbase Size | 2580 mm | 2810 mm |
| Fuel Consumption Overall | 7.1 L/100km | 5.5 L/100km |
| Fuel Tank Capacity | 70 L | 65 L |
