2007 Audi A4 vs. 2009 Audi A3
To start off, 2009 Audi A3 is newer by 2 year(s). Which means there will be less support and parts availability for 2007 Audi A4. In addition, the cost of maintenance, including insurance, on 2007 Audi A4 would be higher. At 3,187 cc (6 cylinders), 2009 Audi A3 is equipped with a bigger engine. In terms of performance, 2009 Audi A3 (247 HP @ 6300 RPM) has 86 more horse power than 2007 Audi A4. (161 HP @ 5700 RPM) In normal driving conditions, 2009 Audi A3 should accelerate faster than 2007 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi A3 weights approximately 140 kg more than 2007 Audi A4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are four wheel drive (4WD) - it offers better handling, traction, and control in all driving conditions compared with front wheel drive or 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 A3 (320 Nm @ 2500 RPM) has 95 more torque (in Nm) than 2007 Audi A4. (225 Nm @ 1950 RPM). This means 2009 Audi A3 will have an easier job in driving up hills or pulling heavy equipment than 2007 Audi A4.
Compare all specifications:
| 2007 Audi A4 | 2009 Audi A3 | |
| Make | Audi | Audi |
| Model | A4 | A3 |
| Year Released | 2007 | 2009 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 1780 cc | 3187 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 161 HP | 247 HP |
| Engine RPM | 5700 RPM | 6300 RPM |
| Torque | 225 Nm | 320 Nm |
| Torque RPM | 1950 RPM | 2500 RPM |
| Engine Bore Size | 81 mm | 84 mm |
| Engine Stroke Size | 86.4 mm | 95.9 mm |
| Engine Compression Ratio | 9.3:1 | 11.3:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 226 km/hour | 250 km/hour |
| Acceleration 0-100mph | 8.7 seconds | 6.4 seconds |
| Drive Type | 4WD | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1470 kg | 1610 kg |
| Vehicle Length | 4550 mm | 4290 mm |
| Vehicle Width | 1780 mm | 1770 mm |
| Vehicle Height | 1430 mm | 1430 mm |
| Wheelbase Size | 2650 mm | 2580 mm |
| Fuel Consumption Overall | 9.2 L/100km | 11.3 L/100km |
| Fuel Tank Capacity | 63 L | 60 L |
