2009 Audi A4 vs. 2007 Audi A3
To start off, 2009 Audi A4 is newer by 2 year(s). Which means there will be less support and parts availability for 2007 Audi A3. In addition, the cost of maintenance, including insurance, on 2007 Audi A3 would be higher. At 3,189 cc (6 cylinders), 2007 Audi A3 is equipped with a bigger engine. In terms of performance, 2009 Audi A4 (328 HP @ 5500 RPM) has 81 more horse power than 2007 Audi A3. (247 HP @ 6300 RPM). In normal driving conditions, 2009 Audi A4 should accelerate faster than 2007 Audi A3. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi A4 weights approximately 36 kg more than 2007 Audi A3. 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 A4 (440 Nm @ 2900 RPM) has 120 more torque (in Nm) than 2007 Audi A3. (320 Nm @ 2500 RPM). This means 2009 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 2007 Audi A3.
Compare all specifications:
| 2009 Audi A4 | 2007 Audi A3 | |
| Make | Audi | Audi |
| Model | A4 | A3 |
| Year Released | 2009 | 2007 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 2995 cc | 3189 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 328 HP | 247 HP |
| Engine RPM | 5500 RPM | 6300 RPM |
| Torque | 440 Nm | 320 Nm |
| Torque RPM | 2900 RPM | 2500 RPM |
| Engine Bore Size | 84.6 mm | 84 mm |
| Engine Stroke Size | 89 mm | 95.9 mm |
| Engine Compression Ratio | 10.3:1 | 11.3:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Acceleration 0-100mph | 5.1 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 | 1650 kg | 1614 kg |
| Vehicle Length | 4720 mm | 4290 mm |
| Vehicle Width | 1830 mm | 1770 mm |
| Vehicle Height | 1410 mm | 1430 mm |
| Wheelbase Size | 2820 mm | 2580 mm |
| Fuel Consumption Overall | 9.7 L/100km | 10.6 L/100km |
