2005 Audi A4 vs. 2007 Audi A6
To start off, 2007 Audi A6 is newer by 2 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 2,967 cc (6 cylinders), 2007 Audi A6 is equipped with a bigger engine. In terms of performance, 2007 Audi A6 (221 HP @ 4000 RPM) has 73 more horse power than 2005 Audi A4. (148 HP @ 5700 RPM) In normal driving conditions, 2007 Audi A6 should accelerate faster than 2005 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2007 Audi A6 weights approximately 135 kg more than 2005 Audi A4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2007 Audi A6 is four wheel drive (4WD), it will have significant more traction and grip than 2005 Audi A4. In wet, icy, snow, or gravel driving conditions, 2007 Audi A6 will offer significantly more control. 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, 2007 Audi A6 (450 Nm @ 1400 RPM) has 240 more torque (in Nm) than 2005 Audi A4. (210 Nm @ 1750 RPM). This means 2007 Audi A6 will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi A4.
Compare all specifications:
| 2005 Audi A4 | 2007 Audi A6 | |
| Make | Audi | Audi |
| Model | A4 | A6 |
| Year Released | 2005 | 2007 |
| Body Type | Sedan | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 1781 cc | 2967 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 148 HP | 221 HP |
| Engine RPM | 5700 RPM | 4000 RPM |
| Torque | 210 Nm | 450 Nm |
| Torque RPM | 1750 RPM | 1400 RPM |
| Engine Bore Size | 81.1 mm | 83 mm |
| Engine Stroke Size | 86.4 mm | 91.4 mm |
| Engine Compression Ratio | 9.3:1 | 17.0:1 |
| Acceleration 0-100mph | 9.1 seconds | 7.3 seconds |
| Drive Type | Front | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1375 kg | 1510 kg |
| Vehicle Length | 4550 mm | 4940 mm |
| Vehicle Width | 1780 mm | 1860 mm |
| Vehicle Height | 1430 mm | 1470 mm |
| Wheelbase Size | 2660 mm | 2850 mm |
| Fuel Consumption Overall | 8.2 L/100km | 8.2 L/100km |
| Fuel Tank Capacity | 70 L | 80 L |
