2008 Audi A4 vs. 2006 Audi A8
To start off, 2008 Audi A4 is newer by 2 year(s). Which means there will be less support and parts availability for 2006 Audi A8. In addition, the cost of maintenance, including insurance, on 2006 Audi A8 would be higher. At 4,134 cc (8 cylinders), 2006 Audi A8 is equipped with a bigger engine. With that said, vehicle weight also plays an important factor in acceleration. 2006 Audi A8 weights approximately 415 kg more than 2008 Audi A4.
Because 2006 Audi A8 is four wheel drive (4WD), it will have significant more traction and grip than 2008 Audi A4. In wet, icy, snow, or gravel driving conditions, 2006 Audi A8 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, 2006 Audi A8 (650 Nm @ 1600 RPM) has 329 more torque (in Nm) than 2008 Audi A4. (321 Nm @ 1750 RPM). This means 2006 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2008 Audi A4.
Compare all specifications:
| 2008 Audi A4 | 2006 Audi A8 | |
| Make | Audi | Audi |
| Model | A4 | A8 |
| Year Released | 2008 | 2006 |
| Body Type | Station Wagon | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1968 cc | 4134 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 0 HP | 322 HP |
| Torque | 321 Nm | 650 Nm |
| Torque RPM | 1750 RPM | 1600 RPM |
| Engine Bore Size | 81 mm | 83 mm |
| Engine Stroke Size | 95.5 mm | 95.5 mm |
| Fuel Type | Diesel | Diesel |
| Top Speed | 201 km/hour | 250 km/hour |
| Acceleration 0-100mph | 10.2 seconds | 5.9 seconds |
| Drive Type | Front | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1530 kg | 1945 kg |
| Vehicle Length | 4550 mm | 5070 mm |
| Vehicle Width | 1780 mm | 1900 mm |
| Vehicle Height | 1430 mm | 1450 mm |
| Wheelbase Size | 2650 mm | 2950 mm |
| Fuel Consumption Overall | 5.8 L/100km | 9.6 L/100km |
| Fuel Tank Capacity | 70 L | 90 L |
