2009 Audi A4 vs. 2009 Audi A3
To start off, both 2009 Audi A4 and 2009 Audi A3 were released in the same year (2009). Therefore the support and the availability on parts for both vehicles should be relatively similar. At 1,968 cc, 2009 Audi A3 is equipped with a bigger engine. In terms of performance, 2009 Audi A4 (158 HP @ 4500 RPM) has 20 more horse power than 2009 Audi A3. (138 HP @ 4000 RPM). In normal driving conditions, 2009 Audi A4 should accelerate faster than 2009 Audi A3. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi A4 weights approximately 540 kg more than 2009 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 A3 (320 Nm @ 1750 RPM) has 70 more torque (in Nm) than 2009 Audi A4. (250 Nm @ 1500 RPM). This means 2009 Audi A3 will have an easier job in driving up hills or pulling heavy equipment than 2009 Audi A4. 2009 Audi A3 has automatic transmission and 2009 Audi A4 has manual transmission. 2009 Audi A4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 Audi A3 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 Audi A4 | 2009 Audi A3 | |
| Make | Audi | Audi |
| Model | A4 | A3 |
| Year Released | 2009 | 2009 |
| Body Type | Station Wagon | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 1797 cc | 1968 cc |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 158 HP | 138 HP |
| Engine RPM | 4500 RPM | 4000 RPM |
| Torque | 250 Nm | 320 Nm |
| Torque RPM | 1500 RPM | 1750 RPM |
| Engine Bore Size | 82.5 mm | 81 mm |
| Engine Stroke Size | 84.1 mm | 95.5 mm |
| Engine Compression Ratio | 9.6:1 | 18.0:1 |
| Fuel Type | Gasoline - Premium | Diesel |
| Top Speed | 218 km/hour | 207 km/hour |
| Acceleration 0-100mph | 8.9 seconds | 9 seconds |
| Drive Type | Front | Front |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 3 doors |
| Vehicle Weight | 1470 kg | 930 kg |
| Vehicle Length | 4710 mm | 4210 mm |
| Vehicle Width | 1830 mm | 1770 mm |
| Vehicle Height | 1440 mm | 1430 mm |
| Wheelbase Size | 2810 mm | 2580 mm |
| Fuel Consumption Overall | 7.2 L/100km | 6.8 L/100km |
| Fuel Tank Capacity | 65 L | 55 L |
