2005 Audi A3 vs. 2009 Audi A4
To start off, 2009 Audi A4 is newer by 4 year(s). Which means there will be less support and parts availability for 2005 Audi A3. In addition, the cost of maintenance, including insurance, on 2005 Audi A3 would be higher. At 1,984 cc (4 cylinders), 2009 Audi A4 is equipped with a bigger engine. In terms of performance, 2009 Audi A4 (208 HP @ 4300 RPM) has 107 more horse power than 2005 Audi A3. (101 HP @ 6500 RPM) In normal driving conditions, 2009 Audi A4 should accelerate faster than 2005 Audi A3. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi A4 weights approximately 320 kg more than 2005 Audi A3. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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, 2009 Audi A4 (350 Nm @ 1500 RPM) has 202 more torque (in Nm) than 2005 Audi A3. (148 Nm @ 3800 RPM). This means 2009 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi A3.
Compare all specifications:
| 2005 Audi A3 | 2009 Audi A4 | |
| Make | Audi | Audi |
| Model | A3 | A4 |
| Year Released | 2005 | 2009 |
| Body Type | Hatchback | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 1596 cc | 1984 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 101 HP | 208 HP |
| Engine RPM | 6500 RPM | 4300 RPM |
| Torque | 148 Nm | 350 Nm |
| Torque RPM | 3800 RPM | 1500 RPM |
| Engine Bore Size | 81 mm | 82.5 mm |
| Engine Stroke Size | 77.4 mm | 92.8 mm |
| Engine Compression Ratio | 10.5:1 | 9.6:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 3 doors | 5 doors |
| Vehicle Weight | 1225 kg | 1545 kg |
| Vehicle Length | 4210 mm | 4710 mm |
| Vehicle Width | 1770 mm | 1830 mm |
| Vehicle Height | 1430 mm | 1440 mm |
| Wheelbase Size | 2440 mm | 2810 mm |
| Fuel Consumption Overall | 7 L/100km | 6.6 L/100km |
| Fuel Tank Capacity | 90 L | 64 L |
