2007 Audi A4 vs. 2009 Mercedes-Benz SL
To start off, 2009 Mercedes-Benz SL is newer by 2 year(s). Which means there will be less support and parts availability for 2007 Audi A4. In addition, the cost of maintenance, including insurance, on 2007 Audi A4 would be higher. At 5,512 cc (12 cylinders), 2009 Mercedes-Benz SL is equipped with a bigger engine. In terms of performance, 2009 Mercedes-Benz SL (510 HP @ 5000 RPM) has 310 more horse power than 2007 Audi A4. (200 HP @ 5100 RPM) In normal driving conditions, 2009 Mercedes-Benz SL should accelerate faster than 2007 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2009 Mercedes-Benz SL weights approximately 70 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.
Because 2007 Audi A4 is four wheel drive (4WD), it will have significant more traction and grip than 2009 Mercedes-Benz SL. In wet, icy, snow, or gravel driving conditions, 2007 Audi A4 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, 2009 Mercedes-Benz SL (830 Nm @ 1900 RPM) has 548 more torque (in Nm) than 2007 Audi A4. (282 Nm @ 1800 RPM). This means 2009 Mercedes-Benz SL will have an easier job in driving up hills or pulling heavy equipment than 2007 Audi A4.
Compare all specifications:
| 2007 Audi A4 | 2009 Mercedes-Benz SL | |
| Make | Audi | Mercedes-Benz |
| Model | A4 | SL |
| Year Released | 2007 | 2009 |
| Body Type | Station Wagon | Convertible |
| Engine Position | Front | Front |
| Engine Size | 1984 cc | 5512 cc |
| Engine Cylinders | 4 cylinders | 12 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 3 valves |
| Horse Power | 200 HP | 510 HP |
| Engine RPM | 5100 RPM | 5000 RPM |
| Torque | 282 Nm | 830 Nm |
| Torque RPM | 1800 RPM | 1900 RPM |
| Fuel Type | Diesel | Diesel |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1880 kg | 1950 kg |
| Vehicle Length | 4590 mm | 4540 mm |
| Vehicle Width | 1780 mm | 1820 mm |
| Vehicle Height | 1430 mm | 1300 mm |
| Wheelbase Size | 2660 mm | 2570 mm |
| Fuel Consumption | 7.8 L/100km | 13.1 L/100km |
| Fuel Consumption City | 10.7 L/100km | 21.4 L/100km |
| Fuel Consumption Overall | 9.4 L/100km | 16.8 L/100km |
| Fuel Tank Capacity | 63 L | 80 L |
