2002 Audi A4 vs. 2006 Audi A8
To start off, 2006 Audi A8 is newer by 4 year(s). Which means there will be less support and parts availability for 2002 Audi A4. In addition, the cost of maintenance, including insurance, on 2002 Audi A4 would be higher. At 5,997 cc, 2006 Audi A8 is equipped with a bigger engine. In terms of performance, 2006 Audi A8 (450 HP @ 6200 RPM) has 290 more horse power than 2002 Audi A4. (160 HP @ 4000 RPM) In normal driving conditions, 2006 Audi A8 should accelerate faster than 2002 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2006 Audi A8 weights approximately 555 kg more than 2002 Audi A4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2006 Audi A8 is four wheel drive (4WD), it will have significant more traction and grip than 2002 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 (580 Nm @ 4000 RPM) has 270 more torque (in Nm) than 2002 Audi A4. (310 Nm @ 1400 RPM). This means 2006 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2002 Audi A4.
Compare all specifications:
| 2002 Audi A4 | 2006 Audi A8 | |
| Make | Audi | Audi |
| Model | A4 | A8 |
| Year Released | 2002 | 2006 |
| Body Type | Station Wagon | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2496 cc | 5997 cc |
| Engine Type | V | W |
| Horse Power | 160 HP | 450 HP |
| Engine RPM | 4000 RPM | 6200 RPM |
| Torque | 310 Nm | 580 Nm |
| Torque RPM | 1400 RPM | 4000 RPM |
| Engine Bore Size | 78.3 mm | 84 mm |
| Engine Stroke Size | 86.4 mm | 90.2 mm |
| Engine Compression Ratio | 18.5:1 | 11.0:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Drive Type | Front | 4WD |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1590 kg | 2145 kg |
| Vehicle Length | 4550 mm | 5200 mm |
| Vehicle Width | 1780 mm | 1900 mm |
| Vehicle Height | 1430 mm | 1460 mm |
| Wheelbase Size | 2660 mm | 3080 mm |
| Fuel Consumption | 5.9 L/100km | 11.2 L/100km |
| Fuel Consumption City | 9.5 L/100km | 15.7 L/100km |
| Fuel Consumption Overall | 7.2 L/100km | 13.8 L/100km |
| Fuel Tank Capacity | 70 L | 90 L |
