2003 Audi A3 vs. 2009 Audi RS4
To start off, 2009 Audi RS4 is newer by 6 year(s). Which means there will be less support and parts availability for 2003 Audi A3. In addition, the cost of maintenance, including insurance, on 2003 Audi A3 would be higher. At 4,163 cc (8 cylinders), 2009 Audi RS4 is equipped with a bigger engine. In terms of performance, 2009 Audi RS4 (414 HP @ 7800 RPM) has 314 more horse power than 2003 Audi A3. (100 HP @ 5600 RPM) In normal driving conditions, 2009 Audi RS4 should accelerate faster than 2003 Audi A3. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi RS4 weights approximately 640 kg more than 2003 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 RS4 (430 Nm @ 5500 RPM) has 282 more torque (in Nm) than 2003 Audi A3. (148 Nm @ 3800 RPM). This means 2009 Audi RS4 will have an easier job in driving up hills or pulling heavy equipment than 2003 Audi A3.
Compare all specifications:
| 2003 Audi A3 | 2009 Audi RS4 | |
| Make | Audi | Audi |
| Model | A3 | RS4 |
| Year Released | 2003 | 2009 |
| Body Type | Hatchback | Convertible |
| Engine Position | Front | Front |
| Engine Size | 1595 cc | 4163 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 100 HP | 414 HP |
| Engine RPM | 5600 RPM | 7800 RPM |
| Torque | 148 Nm | 430 Nm |
| Torque RPM | 3800 RPM | 5500 RPM |
| Engine Bore Size | 81.1 mm | 84.5 mm |
| Engine Stroke Size | 77.4 mm | 92.8 mm |
| Engine Compression Ratio | 10.3:1 | 12.5:1 |
| Acceleration 0-100mph | 11.9 seconds | 4.9 seconds |
| Drive Type | 4WD | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 3 doors | 2 doors |
| Vehicle Weight | 1205 kg | 1845 kg |
| Vehicle Length | 4210 mm | 4560 mm |
| Vehicle Width | 1770 mm | 1820 mm |
| Vehicle Height | 1430 mm | 1400 mm |
| Wheelbase Size | 2580 mm | 2660 mm |
| Fuel Consumption Overall | 7 L/100km | 14.1 L/100km |
| Fuel Tank Capacity | 55 L | 63 L |
