2009 Audi A6 vs. 2005 Audi A4
To start off, 2009 Audi A6 is newer by 4 year(s). Which means there will be less support and parts availability for 2005 Audi A4. In addition, the cost of maintenance, including insurance, on 2005 Audi A4 would be higher. At 4,163 cc (8 cylinders), 2009 Audi A6 is equipped with a bigger engine. In terms of performance, 2009 Audi A6 (350 HP @ 6800 RPM) has 133 more horse power than 2005 Audi A4. (217 HP @ 4000 RPM). In normal driving conditions, 2009 Audi A6 should accelerate faster than 2005 Audi A4.
Let's talk about torque, 2009 Audi A6 (441 Nm) has 141 more torque (in Nm) than 2005 Audi A4. (300 Nm). This means 2009 Audi A6 will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi A4.
Compare all specifications:
| 2009 Audi A6 | 2005 Audi A4 | |
| Make | Audi | Audi |
| Model | A6 | A4 |
| Year Released | 2009 | 2005 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 2976 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 5 valves |
| Horse Power | 350 HP | 217 HP |
| Engine RPM | 6800 RPM | 4000 RPM |
| Torque | 441 Nm | 300 Nm |
| Engine Bore Size | 84.5 mm | 83 mm |
| Engine Stroke Size | 92.8 mm | 93 mm |
| Engine Compression Ratio | 12.5:1 | 10.1:1 |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Length | 4930 mm | 4580 mm |
| Vehicle Width | 2040 mm | 1780 mm |
| Vehicle Height | 1460 mm | 1400 mm |
| Wheelbase Size | 2850 mm | 2660 mm |
| Fuel Consumption Highway | 10.4 L/100km | 8.7 L/100km |
| Fuel Consumption City | 14.9 L/100km | 11.8 L/100km |
| Fuel Consumption Overall | 13.2 L/100km | 10.2 L/100km |
| Fuel Tank Capacity | 80 L | 70 L |
