2009 Audi A3 vs. 2005 Audi A8
To start off, 2009 Audi A3 is newer by 4 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 4,170 cc (8 cylinders), 2005 Audi A8 is equipped with a bigger engine. In terms of performance, 2005 Audi A8 (330 HP @ 6500 RPM) has 133 more horse power than 2009 Audi A3. (197 HP @ 6000 RPM) In normal driving conditions, 2005 Audi A8 should accelerate faster than 2009 Audi A3. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi A8 weights approximately 925 kg more than 2009 Audi A3. 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 2009 Audi A3. 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 (430 Nm @ 3500 RPM) has 150 more torque (in Nm) than 2009 Audi A3. (280 Nm @ 1800 RPM). This means 2005 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2009 Audi A3.
Compare all specifications:
| 2009 Audi A3 | 2005 Audi A8 | |
| Make | Audi | Audi |
| Model | A3 | A8 |
| Year Released | 2009 | 2005 |
| Body Type | Hatchback | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1982 cc | 4170 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 5 valves |
| Horse Power | 197 HP | 330 HP |
| Engine RPM | 6000 RPM | 6500 RPM |
| Torque | 280 Nm | 430 Nm |
| Torque RPM | 1800 RPM | 3500 RPM |
| Engine Bore Size | 82.5 mm | 84.5 mm |
| Engine Stroke Size | 92.8 mm | 93 mm |
| Engine Compression Ratio | 10.5:1 | 11.0:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Top Speed | 234 km/hour | 250 km/hour |
| Acceleration 0-100mph | 7 seconds | 6.3 seconds |
| Drive Type | Front | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 3 doors | 4 doors |
| Vehicle Weight | 930 kg | 1855 kg |
| Vehicle Length | 4290 mm | 5060 mm |
| Vehicle Width | 1430 mm | 1900 mm |
| Vehicle Height | 1770 mm | 1450 mm |
| Wheelbase Size | 2580 mm | 2770 mm |
| Fuel Consumption Overall | 8.8 L/100km | 11.9 L/100km |
| Fuel Tank Capacity | 55 L | 90 L |
