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 2,976 cc (6 cylinders), 2005 Audi A6 is equipped with a bigger engine. In terms of performance, 2005 Audi A6 (247 HP @ 6300 RPM) has 29 more horse power than 2009 Audi A4. (218 HP @ 5900 RPM). In normal driving conditions, 2005 Audi A6 should accelerate faster than 2009 Audi A4.
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, 2005 Audi A6 (320 Nm @ 3250 RPM) has 20 more torque (in Nm) than 2009 Audi A4. (300 Nm @ 2200 RPM). This means 2005 Audi A6 will have an easier job in driving up hills or pulling heavy equipment than 2009 Audi A4. 2005 Audi A6 has automatic transmission and 2009 Audi A4 has manual transmission. 2009 Audi A4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2005 Audi A6 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2005 Audi A6 | 2009 Audi A4 | |
| Make | Audi | Audi |
| Model | A6 | A4 |
| Year Released | 2005 | 2009 |
| Body Type | Station Wagon | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2976 cc | 1984 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 247 HP | 218 HP |
| Engine RPM | 6300 RPM | 5900 RPM |
| Torque | 320 Nm | 300 Nm |
| Torque RPM | 3250 RPM | 2200 RPM |
| Engine Bore Size | 84.5 mm | 82.5 mm |
| Engine Stroke Size | 92.8 mm | 92.8 mm |
| Engine Compression Ratio | 13.0:1 | 10.5:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | 4WD | 4WD |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Length | 4940 mm | 4610 mm |
| Vehicle Width | 1870 mm | 1780 mm |
| Vehicle Height | 1470 mm | 1400 mm |
| Wheelbase Size | 2850 mm | 2660 mm |
| Fuel Tank Capacity | 70 L | 63 L |
