2007 Audi S4 vs. 2011 BMW 550
To start off, 2011 BMW 550 is newer by 4 year(s). Which means there will be less support and parts availability for 2007 Audi S4. In addition, the cost of maintenance, including insurance, on 2007 Audi S4 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 60 more horse power than 2007 Audi S4. (340 HP @ 6800 RPM) In normal driving conditions, 2011 BMW 550 should accelerate faster than 2007 Audi S4. With that said, vehicle weight also plays an important factor in acceleration. 2011 BMW 550 weights approximately 450 kg more than 2007 Audi S4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2007 Audi S4 is four wheel drive (4WD), it will have significant more traction and grip than 2011 BMW 550. In wet, icy, snow, or gravel driving conditions, 2007 Audi S4 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, 2011 BMW 550 (609 Nm @ 1750 RPM) has 199 more torque (in Nm) than 2007 Audi S4. (410 Nm @ 3500 RPM). This means 2011 BMW 550 will have an easier job in driving up hills or pulling heavy equipment than 2007 Audi S4.
Compare all specifications:
| 2007 Audi S4 | 2011 BMW 550 | |
| Make | Audi | BMW |
| Model | S4 | 550 |
| Year Released | 2007 | 2011 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4161 cc | 4400 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 340 HP | 400 HP |
| Engine RPM | 6800 RPM | 5500 RPM |
| Torque | 410 Nm | 609 Nm |
| Torque RPM | 3500 RPM | 1750 RPM |
| Fuel Type | Diesel | Gasoline |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | 8-speed shiftable automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1530 kg | 1980 kg |
| Vehicle Length | 4590 mm | 4899 mm |
| Vehicle Width | 1790 mm | 1860 mm |
| Vehicle Height | 1420 mm | 1464 mm |
| Wheelbase Size | 2660 mm | 2968 mm |
| Fuel Consumption | 10.2 L/100km | 10.7 L/100km |
| Fuel Consumption City | 15.7 L/100km | 15.7 L/100km |
| Fuel Tank Capacity | 63 L | 70 L |
