2008 Audi A5 vs. 2009 Audi A8
To start off, 2009 Audi A8 is newer by 1 year(s). Which means there will be less support and parts availability for 2008 Audi A5. In addition, the cost of maintenance, including insurance, on 2008 Audi A5 would be higher. At 3,197 cc (6 cylinders), 2008 Audi A5 is equipped with a bigger engine. In terms of performance, 2008 Audi A5 (262 HP @ 6500 RPM) has 32 more horse power than 2009 Audi A8. (230 HP @ 4000 RPM). In normal driving conditions, 2008 Audi A5 should accelerate faster than 2009 Audi A8. With that said, vehicle weight also plays an important factor in acceleration. 2008 Audi A5 weights approximately 680 kg more than 2009 Audi A8. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 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, 2009 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, 2009 Audi A8 (450 Nm @ 1400 RPM) has 120 more torque (in Nm) than 2008 Audi A5. (330 Nm @ 3000 RPM). This means 2009 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 | 2009 Audi A8 | |
| Make | Audi | Audi |
| Model | A5 | A8 |
| Year Released | 2008 | 2009 |
| Body Type | Coupe | Sedan |
| Engine Position | Front | Front |
| Engine Size | 3197 cc | 2965 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 262 HP | 230 HP |
| Engine RPM | 6500 RPM | 4000 RPM |
| Torque | 330 Nm | 450 Nm |
| Torque RPM | 3000 RPM | 1400 RPM |
| Engine Compression Ratio | 10.5:1 | 17.0:1 |
| Fuel Type | Gasoline - Premium | Diesel |
| Top Speed | 250 km/hour | 243 km/hour |
| Acceleration 0-100mph | 6.1 seconds | 7.9 seconds |
| Drive Type | Front | 4WD |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1610 kg | 930 kg |
| Vehicle Length | 4630 mm | 5190 mm |
| Vehicle Width | 1860 mm | 1900 mm |
| Vehicle Height | 1380 mm | 1450 mm |
| Wheelbase Size | 2760 mm | 3080 mm |
| Fuel Consumption Overall | 8.7 L/100km | 8.4 L/100km |
| Fuel Tank Capacity | 80 L | 90 L |
