2005 Audi S4 vs. 2009 Mercedes-Benz SL
To start off, 2009 Mercedes-Benz SL is newer by 4 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 6,208 cc (8 cylinders), 2009 Mercedes-Benz SL is equipped with a bigger engine. In terms of performance, 2009 Mercedes-Benz SL (518 HP @ 6800 RPM) has 178 more horse power than 2005 Audi S4. (340 HP @ 6300 RPM) In normal driving conditions, 2009 Mercedes-Benz SL should accelerate faster than 2005 Audi S4. With that said, vehicle weight also plays an important factor in acceleration. 2009 Mercedes-Benz SL weights approximately 990 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, 2009 Mercedes-Benz SL (631 Nm) has 221 more torque (in Nm) than 2005 Audi S4. (410 Nm). This means 2009 Mercedes-Benz SL will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi S4.
Compare all specifications:
| 2005 Audi S4 | 2009 Mercedes-Benz SL | |
| Make | Audi | Mercedes-Benz |
| Model | S4 | SL |
| Year Released | 2005 | 2009 |
| Body Type | Convertible | Convertible |
| Engine Position | Front | Front |
| Engine Size | 4161 cc | 6208 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 340 HP | 518 HP |
| Engine RPM | 6300 RPM | 6800 RPM |
| Torque | 410 Nm | 631 Nm |
| Engine Compression Ratio | 11.0:1 | 9.0:1 |
| Number of Seats | 4 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1840 kg | 2830 kg |
| Vehicle Length | 4580 mm | 4540 mm |
| Vehicle Width | 1780 mm | 1820 mm |
| Vehicle Height | 1400 mm | 1300 mm |
| Wheelbase Size | 2660 mm | 2570 mm |
| Fuel Consumption | 10.2 L/100km | 12.4 L/100km |
| Fuel Consumption City | 13.8 L/100km | 19.6 L/100km |
| Fuel Consumption Overall | 11.8 L/100km | 16.8 L/100km |
| Fuel Tank Capacity | 63 L | 80 L |
