2007 Audi RS4 vs. 2009 BMW 550
To start off, 2009 BMW 550 is newer by 2 year(s). Which means there will be less support and parts availability for 2007 Audi RS4. In addition, the cost of maintenance, including insurance, on 2007 Audi RS4 would be higher. At 4,799 cc, 2009 BMW 550 is equipped with a bigger engine. In terms of performance, 2007 Audi RS4 (420 HP @ 8205 RPM) has 58 more horse power than 2009 BMW 550. (362 HP @ 6300 RPM). In normal driving conditions, 2007 Audi RS4 should accelerate faster than 2009 BMW 550. With that said, vehicle weight also plays an important factor in acceleration. 2007 Audi RS4 weights approximately 40 kg more than 2009 BMW 550. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2007 Audi RS4 is four wheel drive (4WD), it will have significant more traction and grip than 2009 BMW 550. In wet, icy, snow, or gravel driving conditions, 2007 Audi RS4 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, 2009 BMW 550 (490 Nm @ 3400 RPM) has 60 more torque (in Nm) than 2007 Audi RS4. (430 Nm @ 5500 RPM). This means 2009 BMW 550 will have an easier job in driving up hills or pulling heavy equipment than 2007 Audi RS4.
Compare all specifications:
| 2007 Audi RS4 | 2009 BMW 550 | |
| Make | Audi | BMW |
| Model | RS4 | 550 |
| Year Released | 2007 | 2009 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4161 cc | 4799 cc |
| Horse Power | 420 HP | 362 HP |
| Engine RPM | 8205 RPM | 6300 RPM |
| Torque | 430 Nm | 490 Nm |
| Torque RPM | 5500 RPM | 3400 RPM |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1700 kg | 1660 kg |
| Vehicle Width | 1820 mm | 1470 mm |
