2009 Audi A3 vs. 2005 Audi A4
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 A4. In addition, the cost of maintenance, including insurance, on 2005 Audi A4 would be higher. At 1,984 cc (4 cylinders), 2009 Audi A3 is equipped with a bigger engine. In terms of performance, 2009 Audi A3 (148 HP @ 6000 RPM) has 48 more horse power than 2005 Audi A4. (100 HP @ 1900 RPM). In normal driving conditions, 2009 Audi A3 should accelerate faster than 2005 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi A4 weights approximately 60 kg more than 2009 Audi A3.
Both vehicles are front wheel drive (FWD). Which offers better traction when its slippery than rear wheel drive vehicles. 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 A4 (250 Nm @ 1900 RPM) has 50 more torque (in Nm) than 2009 Audi A3. (200 Nm @ 3500 RPM). This means 2005 Audi A4 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 A4 | |
| Make | Audi | Audi |
| Model | A3 | A4 |
| Year Released | 2009 | 2005 |
| Body Type | Hatchback | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 1984 cc | 1894 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 148 HP | 100 HP |
| Engine RPM | 6000 RPM | 1900 RPM |
| Torque | 200 Nm | 250 Nm |
| Torque RPM | 3500 RPM | 1900 RPM |
| Engine Bore Size | 82.5 mm | 79.5 mm |
| Engine Stroke Size | 92.8 mm | 95.5 mm |
| Engine Compression Ratio | 11.5:1 | 19.0:1 |
| Fuel Type | Gasoline - Premium | Diesel |
| Top Speed | 214 km/hour | 191 km/hour |
| Acceleration 0-100mph | 9.1 seconds | 12.5 seconds |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1390 kg | 1450 kg |
| Vehicle Length | 4210 mm | 4550 mm |
| Vehicle Width | 1770 mm | 1780 mm |
| Vehicle Height | 1430 mm | 1430 mm |
| Wheelbase Size | 2580 mm | 2660 mm |
| Fuel Consumption Overall | 7.2 L/100km | 5.7 L/100km |
| Fuel Tank Capacity | 55 L | 70 L |
