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 2,698 cc (6 cylinders), 2009 Audi A4 is equipped with a bigger engine. In terms of performance, both vehicles can yield 187 horse power. So under normal driving conditions, the acceleration of both vehicles should be relatively similar. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi A6 weights approximately 40 kg more than 2009 Audi A4.
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, 2009 Audi A4 (400 Nm @ 1400 RPM) has 170 more torque (in Nm) than 2005 Audi A6. (230 Nm @ 3000 RPM). This means 2009 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi A6.
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 | 2496 cc | 2698 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 187 HP | 187 HP |
| Engine RPM | 6300 RPM | 3500 RPM |
| Torque | 230 Nm | 400 Nm |
| Torque RPM | 3000 RPM | 1400 RPM |
| Engine Bore Size | 81 mm | 83.1 mm |
| Engine Stroke Size | 77.4 mm | 83.1 mm |
| Engine Compression Ratio | 11.0:1 | 16.8:1 |
| Fuel Type | Gasoline | Diesel |
| Acceleration 0-100mph | 9.3 seconds | 7.9 seconds |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1710 kg | 1670 kg |
| Vehicle Length | 4800 mm | 4710 mm |
| Vehicle Width | 1860 mm | 1830 mm |
| Vehicle Height | 1460 mm | 1430 mm |
| Wheelbase Size | 2660 mm | 2810 mm |
| Fuel Consumption Overall | 9.7 L/100km | 6 L/100km |
| Fuel Tank Capacity | 70 L | 65 L |
