2005 Audi S4 vs. 2011 BMW 550
To start off, 2011 BMW 550 is newer by 6 year(s). Which means there will be less support and parts availability for 2005 Audi S4. In addition, the cost of maintenance, including insurance, on 2005 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 2005 Audi S4. (340 HP @ 6300 RPM) In normal driving conditions, 2011 BMW 550 should accelerate faster than 2005 Audi S4. With that said, vehicle weight also plays an important factor in acceleration. 2011 BMW 550 weights approximately 315 kg more than 2005 Audi S4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2011 BMW 550 (609 Nm) has 199 more torque (in Nm) than 2005 Audi S4. (410 Nm). This means 2011 BMW 550 will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi S4.
Compare all specifications:
| 2005 Audi S4 | 2011 BMW 550 | |
| Make | Audi | BMW |
| Model | S4 | 550 |
| Year Released | 2005 | 2011 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4163 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 | 6300 RPM | 5500 RPM |
| Torque | 410 Nm | 609 Nm |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1735 kg | 2050 kg |
| Vehicle Length | 4550 mm | 4905 mm |
| Vehicle Width | 1770 mm | 1859 mm |
| Vehicle Height | 1430 mm | 1463 mm |
| Wheelbase Size | 2660 mm | 2969 mm |
| Fuel Consumption Highway | 11.2 L/100km | 9.8 L/100km |
| Fuel Consumption City | 15.7 L/100km | 14.7 L/100km |
| Fuel Tank Capacity | 63 L | 70 L |
