2008 Audi A5 vs. 2005 Audi A8
To start off, 2008 Audi A5 is newer by 3 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 5,998 cc, 2005 Audi A8 is equipped with a bigger engine. In terms of performance, 2005 Audi A8 (450 HP @ 6300 RPM) has 188 more horse power than 2008 Audi A5. (262 HP @ 6500 RPM) In normal driving conditions, 2005 Audi A8 should accelerate faster than 2008 Audi A5. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi A8 weights approximately 535 kg more than 2008 Audi A5. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 Audi A8 is four wheel drive (4WD), it will have significant more traction and grip than 2008 Audi A5. In wet, icy, snow, or gravel driving conditions, 2005 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, 2005 Audi A8 (560 Nm) has 230 more torque (in Nm) than 2008 Audi A5. (330 Nm). This means 2005 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2008 Audi A5.
Compare all specifications:
| 2008 Audi A5 | 2005 Audi A8 | |
| Make | Audi | Audi |
| Model | A5 | A8 |
| Year Released | 2008 | 2005 |
| Body Type | Coupe | Sedan |
| Engine Position | Front | Front |
| Engine Size | 3197 cc | 5998 cc |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 262 HP | 450 HP |
| Engine RPM | 6500 RPM | 6300 RPM |
| Torque | 330 Nm | 560 Nm |
| Engine Compression Ratio | 10.5:1 | 11.0:1 |
| Drive Type | Front | 4WD |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1610 kg | 2145 kg |
| Vehicle Length | 4630 mm | 5200 mm |
| Vehicle Width | 1860 mm | 1900 mm |
| Vehicle Height | 1380 mm | 1460 mm |
| Wheelbase Size | 2760 mm | 3080 mm |
| Fuel Consumption Overall | 8.7 L/100km | 13.8 L/100km |
| Fuel Tank Capacity | 80 L | 90 L |
