2009 Audi A4 vs. 2011 BMW 550
To start off, 2011 BMW 550 is newer by 2 year(s). Which means there will be less support and parts availability for 2009 Audi A4. In addition, the cost of maintenance, including insurance, on 2009 Audi A4 would be higher. At 4,400 cc (8 cylinders), 2011 BMW 550 is equipped with a bigger engine. In terms of performance, 2011 BMW 550 (400 HP @ 5500 RPM) has 163 more horse power than 2009 Audi A4. (237 HP @ 4000 RPM) In normal driving conditions, 2011 BMW 550 should accelerate faster than 2009 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2011 BMW 550 weights approximately 600 kg more than 2009 Audi A4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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, 2011 BMW 550 (609 Nm @ 1750 RPM) has 109 more torque (in Nm) than 2009 Audi A4. (500 Nm @ 1500 RPM). This means 2011 BMW 550 will have an easier job in driving up hills or pulling heavy equipment than 2009 Audi A4. 2011 BMW 550 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. 2011 BMW 550 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 Audi A4 | 2011 BMW 550 | |
| Make | Audi | BMW |
| Model | A4 | 550 |
| Year Released | 2009 | 2011 |
| Body Type | Station Wagon | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 2965 cc | 4400 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 237 HP | 400 HP |
| Engine RPM | 4000 RPM | 5500 RPM |
| Torque | 500 Nm | 609 Nm |
| Torque RPM | 1500 RPM | 1750 RPM |
| Fuel Type | Diesel | Gasoline - Premium |
| Drive Type | 4WD | AWD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1695 kg | 2295 kg |
| Vehicle Length | 4710 mm | 4999 mm |
| Vehicle Width | 1830 mm | 1900 mm |
| Vehicle Height | 1440 mm | 1560 mm |
| Wheelbase Size | 2810 mm | 3071 mm |
| Fuel Tank Capacity | 64 L | 70 L |
