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 1,984 cc (4 cylinders), 2009 Audi A4 is equipped with a bigger engine. In terms of performance, 2009 Audi A4 (197 HP @ 5100 RPM) has 59 more horse power than 2007 Audi A3. (138 HP @ 4000 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. 2007 Audi A3 weights approximately 575 kg more than 2009 Audi A4.
Because 2007 Audi A3 is four wheel drive (4WD), it will have significant more traction and grip than 2009 Audi A4. In wet, icy, snow, or gravel driving conditions, 2007 Audi A3 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, 2007 Audi A3 (320 Nm @ 1750 RPM) has 40 more torque (in Nm) than 2009 Audi A4. (280 Nm @ 1800 RPM). This means 2007 Audi A3 will have an easier job in driving up hills or pulling heavy equipment than 2009 Audi A4.
Compare all specifications:
| 2009 Audi A4 | 2007 Audi A3 | |
| Make | Audi | Audi |
| Model | A4 | A3 |
| Year Released | 2009 | 2007 |
| Body Type | Convertible | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 1984 cc | 1967 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 197 HP | 138 HP |
| Engine RPM | 5100 RPM | 4000 RPM |
| Torque | 280 Nm | 320 Nm |
| Torque RPM | 1800 RPM | 1750 RPM |
| Engine Compression Ratio | 10.5:1 | 18.0:1 |
| Fuel Type | Gasoline | Diesel |
| Top Speed | 233 km/hour | 205 km/hour |
| Acceleration 0-100mph | 7.9 seconds | 9.4 seconds |
| Drive Type | Front | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 4 seats | 4 seats |
| Number of Doors | 2 doors | 3 doors |
| Vehicle Weight | 930 kg | 1505 kg |
| Vehicle Length | 4580 mm | 4210 mm |
| Vehicle Width | 1400 mm | 1770 mm |
| Vehicle Height | 1780 mm | 1430 mm |
| Wheelbase Size | 2660 mm | 2580 mm |
| Fuel Consumption Overall | 8.3 L/100km | 5.8 L/100km |
| Fuel Tank Capacity | 70 L | 60 L |
