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 4,178 cc (8 cylinders), 2005 Audi A8 is equipped with a bigger engine. In terms of performance, 2008 Audi A5 (349 HP @ 7000 RPM) has 14 more horse power than 2005 Audi A8. (335 HP @ 4000 RPM). In normal driving conditions, 2008 Audi A5 should accelerate faster than 2005 Audi A8. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi A8 weights approximately 315 kg more than 2008 Audi A5.
Let's talk about torque, 2008 Audi A5 (440 Nm) has 10 more torque (in Nm) than 2005 Audi A8. (430 Nm). This means 2008 Audi A5 will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi A8.
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 | 4163 cc | 4178 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 5 valves |
| Horse Power | 349 HP | 335 HP |
| Engine RPM | 7000 RPM | 4000 RPM |
| Torque | 440 Nm | 430 Nm |
| Engine Bore Size | 84.5 mm | 85 mm |
| Engine Stroke Size | 93 mm | 93 mm |
| Engine Compression Ratio | 10.3:1 | 11.0:1 |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1630 kg | 1945 kg |
| Vehicle Length | 4640 mm | 5060 mm |
| Vehicle Width | 1860 mm | 1900 mm |
| Vehicle Height | 1380 mm | 1450 mm |
| Wheelbase Size | 2760 mm | 2950 mm |
| Fuel Consumption Overall | 12.6 L/100km | 11.8 L/100km |
| Fuel Tank Capacity | 64 L | 90 L |
