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 3,697 cc (8 cylinders), 2007 Audi A8 is equipped with a bigger engine. In terms of performance, 2007 Audi A8 (276 HP @ 6000 RPM) has 21 more horse power than 2006 Audi A4. (255 HP @ 6500 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. 2006 Audi A4 weights approximately 104 kg more than 2007 Audi A8.
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 (360 Nm @ 3750 RPM) has 30 more torque (in Nm) than 2006 Audi A4. (330 Nm @ 3250 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 | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 3129 cc | 3697 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 5 valves |
| Horse Power | 255 HP | 276 HP |
| Engine RPM | 6500 RPM | 6000 RPM |
| Torque | 330 Nm | 360 Nm |
| Torque RPM | 3250 RPM | 3750 RPM |
| Engine Bore Size | 84.5 mm | 84.5 mm |
| Engine Stroke Size | 92.8 mm | 82.4 mm |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Drive Type | 4WD | 4WD |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1880 kg | 1776 kg |
| Vehicle Length | 4590 mm | 5060 mm |
| Vehicle Width | 1780 mm | 1900 mm |
| Vehicle Height | 1430 mm | 1450 mm |
| Wheelbase Size | 2660 mm | 2950 mm |
| Fuel Consumption Highway | 8.7 L/100km | 8.6 L/100km |
| Fuel Consumption City | 13.8 L/100km | 17.1 L/100km |
| Fuel Consumption Overall | 11.2 L/100km | 11.7 L/100km |
| Fuel Tank Capacity | 63 L | 90 L |
