2005 Audi S4 vs. 2013 BMW 7 Series
To start off, 2013 BMW 7 Series is newer by 8 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 4,395 cc (8 cylinders), 2013 BMW 7 Series is equipped with a bigger engine. In terms of performance, 2013 BMW 7 Series (439 HP @ 5500 RPM) has 99 more horse power than 2005 Audi S4. (340 HP @ 6300 RPM) In normal driving conditions, 2013 BMW 7 Series should accelerate faster than 2005 Audi S4. With that said, vehicle weight also plays an important factor in acceleration. 2013 BMW 7 Series weights approximately 312 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, 2013 BMW 7 Series (651 Nm) has 241 more torque (in Nm) than 2005 Audi S4. (410 Nm). This means 2013 BMW 7 Series will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi S4.
Compare all specifications:
| 2005 Audi S4 | 2013 BMW 7 Series | |
| Make | Audi | BMW |
| Model | S4 | 7 Series |
| Year Released | 2005 | 2013 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4161 cc | 4395 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 340 HP | 439 HP |
| Engine RPM | 6300 RPM | 5500 RPM |
| Torque | 410 Nm | 651 Nm |
| Engine Bore Size | 85 mm | 89 mm |
| Engine Stroke Size | 93 mm | 88 mm |
| Engine Compression Ratio | 11.0:1 | 10.0 :1 |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1840 kg | 2152 kg |
| Vehicle Length | 4580 mm | 5074 mm |
| Vehicle Width | 1780 mm | 2134 mm |
| Vehicle Height | 1400 mm | 1471 mm |
| Wheelbase Size | 2660 mm | 3070 mm |
| Fuel Consumption Highway | 10.2 L/100km | 7.5 L/100km |
| Fuel Consumption City | 13.8 L/100km | 11.6 L/100km |
| Fuel Tank Capacity | 63 L | 80 L |
