2007 Audi A4 vs. 2005 Mercedes-Benz SL
To start off, 2007 Audi A4 is newer by 2 year(s). Which means there will be less support and parts availability for 2005 Mercedes-Benz SL. In addition, the cost of maintenance, including insurance, on 2005 Mercedes-Benz SL would be higher. At 4,966 cc (8 cylinders), 2005 Mercedes-Benz SL is equipped with a bigger engine. In terms of performance, 2005 Mercedes-Benz SL (302 HP @ 2700 RPM) has 50 more horse power than 2007 Audi A4. (252 HP @ 5100 RPM) In normal driving conditions, 2005 Mercedes-Benz SL should accelerate faster than 2007 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2005 Mercedes-Benz SL weights approximately 150 kg more than 2007 Audi A4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2005 Mercedes-Benz SL (460 Nm @ 2700 RPM) has 130 more torque (in Nm) than 2007 Audi A4. (330 Nm @ 3250 RPM). This means 2005 Mercedes-Benz SL will have an easier job in driving up hills or pulling heavy equipment than 2007 Audi A4. 2005 Mercedes-Benz SL has automatic transmission and 2007 Audi A4 has manual transmission. 2007 Audi A4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2005 Mercedes-Benz SL will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2007 Audi A4 | 2005 Mercedes-Benz SL | |
| Make | Audi | Mercedes-Benz |
| Model | A4 | SL |
| Year Released | 2007 | 2005 |
| Body Type | Convertible | Convertible |
| Engine Position | Front | Front |
| Engine Size | 3123 cc | 4966 cc |
| Valves per Cylinder | 4 valves | 3 valves |
| Horse Power | 252 HP | 302 HP |
| Engine RPM | 5100 RPM | 2700 RPM |
| Torque | 330 Nm | 460 Nm |
| Torque RPM | 3250 RPM | 2700 RPM |
| Engine Bore Size | 84.5 mm | 97 mm |
| Engine Stroke Size | 92.8 mm | 84 mm |
| Engine Compression Ratio | 12.5:1 | 10.0:1 |
| Top Speed | 250 km/hour | 250 km/hour |
| Acceleration 0-100mph | 6.8 seconds | 6.3 seconds |
| Transmission Type | Manual | Automatic |
| Number of Seats | 4 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1698 kg | 1848 kg |
| Vehicle Length | 4580 mm | 4540 mm |
| Vehicle Width | 1400 mm | 1820 mm |
| Vehicle Height | 1780 mm | 1300 mm |
| Wheelbase Size | 2660 mm | 2570 mm |
| Fuel Consumption Overall | 11 L/100km | 12.8 L/100km |
| Fuel Tank Capacity | 70 L | 80 L |
