2006 Audi A4 vs. 2007 Audi A8
To start off, 2007 Audi A8 is newer by 1 year(s). Which means there will be less support and parts availability for 2006 Audi A4. In addition, the cost of maintenance, including insurance, on 2006 Audi A4 would be higher. At 4,134 cc (8 cylinders), 2007 Audi A8 is equipped with a bigger engine. In terms of performance, 2007 Audi A8 (322 HP @ 3750 RPM) has 120 more horse power than 2006 Audi A4. (202 HP @ 3500 RPM) In normal driving conditions, 2007 Audi A8 should accelerate faster than 2006 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2007 Audi A8 weights approximately 670 kg more than 2006 Audi A4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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, 2007 Audi A8 (650 Nm @ 1600 RPM) has 200 more torque (in Nm) than 2006 Audi A4. (450 Nm @ 1400 RPM). This means 2007 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2006 Audi A4.
Compare all specifications:
| 2006 Audi A4 | 2007 Audi A8 | |
| Make | Audi | Audi |
| Model | A4 | A8 |
| Year Released | 2006 | 2007 |
| Body Type | Station Wagon | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2967 cc | 4134 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 202 HP | 322 HP |
| Engine RPM | 3500 RPM | 3750 RPM |
| Torque | 450 Nm | 650 Nm |
| Torque RPM | 1400 RPM | 1600 RPM |
| Engine Compression Ratio | 17.0:1 | 16.5:1 |
| Fuel Type | Diesel | Diesel |
| Top Speed | 231 km/hour | 245 km/hour |
| Acceleration 0-100mph | 7.9 seconds | 5.9 seconds |
| Drive Type | 4WD | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1275 kg | 1945 kg |
| Vehicle Length | 4590 mm | 5070 mm |
| Vehicle Width | 1780 mm | 1900 mm |
| Vehicle Height | 1430 mm | 1450 mm |
| Wheelbase Size | 2650 mm | 2950 mm |
| Fuel Consumption Overall | 8.3 L/100km | 9.4 L/100km |
| Fuel Tank Capacity | 66 L | 90 L |
