2009 Audi RS4 vs. 2010 BMW 550
To start off, 2010 BMW 550 is newer by 1 year(s). Which means there will be less support and parts availability for 2009 Audi RS4. In addition, the cost of maintenance, including insurance, on 2009 Audi RS4 would be higher. At 4,400 cc (8 cylinders), 2010 BMW 550 is equipped with a bigger engine. In terms of performance, 2009 Audi RS4 (414 HP @ 7800 RPM) has 14 more horse power than 2010 BMW 550. (400 HP @ 5500 RPM). In normal driving conditions, 2009 Audi RS4 should accelerate faster than 2010 BMW 550. With that said, vehicle weight also plays an important factor in acceleration. 2010 BMW 550 weights approximately 530 kg more than 2009 Audi RS4.
Because 2009 Audi RS4 is four wheel drive (4WD), it will have significant more traction and grip than 2010 BMW 550. In wet, icy, snow, or gravel driving conditions, 2009 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, 2010 BMW 550 (609 Nm @ 1750 RPM) has 179 more torque (in Nm) than 2009 Audi RS4. (430 Nm @ 5500 RPM). This means 2010 BMW 550 will have an easier job in driving up hills or pulling heavy equipment than 2009 Audi RS4. 2010 BMW 550 has automatic transmission and 2009 Audi RS4 has manual transmission. 2009 Audi RS4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2010 BMW 550 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 Audi RS4 | 2010 BMW 550 | |
| Make | Audi | BMW |
| Model | RS4 | 550 |
| Year Released | 2009 | 2010 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 4161 cc | 4400 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 414 HP | 400 HP |
| Engine RPM | 7800 RPM | 5500 RPM |
| Torque | 430 Nm | 609 Nm |
| Torque RPM | 5500 RPM | 1750 RPM |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1710 kg | 2240 kg |
| Vehicle Length | 4590 mm | 4999 mm |
| Vehicle Width | 1820 mm | 1900 mm |
| Vehicle Height | 1420 mm | 1560 mm |
| Wheelbase Size | 2660 mm | 3066 mm |
| Fuel Tank Capacity | 70 L | 70 L |
