2005 Audi A4 vs. 2007 Audi RS4
To start off, 2007 Audi RS4 is newer by 2 year(s). Which means there will be less support and parts availability for 2005 Audi A4. In addition, the cost of maintenance, including insurance, on 2005 Audi A4 would be higher. At 4,163 cc (8 cylinders), 2007 Audi RS4 is equipped with a bigger engine. In terms of performance, 2007 Audi RS4 (414 HP @ 7800 RPM) has 240 more horse power than 2005 Audi A4. (174 HP @ 4000 RPM) In normal driving conditions, 2007 Audi RS4 should accelerate faster than 2005 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2007 Audi RS4 weights approximately 250 kg more than 2005 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, 2007 Audi RS4 (431 Nm) has 201 more torque (in Nm) than 2005 Audi A4. (230 Nm). This means 2007 Audi RS4 will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi A4.
Compare all specifications:
| 2005 Audi A4 | 2007 Audi RS4 | |
| Make | Audi | Audi |
| Model | A4 | RS4 |
| Year Released | 2005 | 2007 |
| Body Type | Station Wagon | Convertible |
| Engine Position | Front | Front |
| Engine Size | 1785 cc | 4163 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 174 HP | 414 HP |
| Engine RPM | 4000 RPM | 7800 RPM |
| Torque | 230 Nm | 431 Nm |
| Engine Bore Size | 81 mm | 84.5 mm |
| Engine Stroke Size | 86 mm | 92.8 mm |
| Drive Type | 4WD | 4WD |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1595 kg | 1845 kg |
| Vehicle Length | 4550 mm | 4560 mm |
| Vehicle Width | 1770 mm | 1820 mm |
| Vehicle Height | 1430 mm | 1400 mm |
| Wheelbase Size | 2660 mm | 2660 mm |
| Fuel Consumption Overall | 9.4 L/100km | 13.9 L/100km |
| Fuel Tank Capacity | 63 L | 63 L |
