2005 Audi A8 vs. 2006 Audi A4
To start off, 2006 Audi A4 is newer by 1 year(s). Which means there will be less support and parts availability for 2005 Audi A8. In addition, the cost of maintenance, including insurance, on 2005 Audi A8 would be higher. At 4,172 cc (8 cylinders), 2005 Audi A8 is equipped with a bigger engine. In terms of performance, 2005 Audi A8 (330 HP @ 6500 RPM) has 168 more horse power than 2006 Audi A4. (162 HP @ 5700 RPM). In normal driving conditions, 2005 Audi A8 should accelerate faster than 2006 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi A8 weights approximately 450 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, 2005 Audi A8 (430 Nm @ 3500 RPM) has 205 more torque (in Nm) than 2006 Audi A4. (225 Nm @ 1950 RPM). This means 2005 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2006 Audi A4. 2005 Audi A8 has automatic transmission and 2006 Audi A4 has manual transmission. 2006 Audi A4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2005 Audi A8 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2005 Audi A8 | 2006 Audi A4 | |
| Make | Audi | Audi |
| Model | A8 | A4 |
| Year Released | 2005 | 2006 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4172 cc | 1781 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 5 valves |
| Horse Power | 330 HP | 162 HP |
| Engine RPM | 6500 RPM | 5700 RPM |
| Torque | 430 Nm | 225 Nm |
| Torque RPM | 3500 RPM | 1950 RPM |
| Engine Bore Size | 84.6 mm | 81 mm |
| Engine Stroke Size | 93 mm | 86.4 mm |
| Engine Compression Ratio | 11.0:1 | 9.3:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Acceleration 0-100mph | 6.4 seconds | 8.7 seconds |
| Drive Type | 4WD | 4WD |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1910 kg | 1460 kg |
| Vehicle Length | 5190 mm | 4550 mm |
| Vehicle Width | 1900 mm | 1780 mm |
| Vehicle Height | 1460 mm | 1430 mm |
| Wheelbase Size | 3080 mm | 2660 mm |
| Fuel Consumption Overall | 11.9 L/100km | 9.2 L/100km |
| Fuel Tank Capacity | 90 L | 70 L |
