2009 Audi A4 vs. 2003 Mercedes-Benz SL
To start off, 2009 Audi A4 is newer by 6 year(s). Which means there will be less support and parts availability for 2003 Mercedes-Benz SL. In addition, the cost of maintenance, including insurance, on 2003 Mercedes-Benz SL would be higher. At 4,966 cc (8 cylinders), 2003 Mercedes-Benz SL is equipped with a bigger engine. In terms of performance, 2003 Mercedes-Benz SL (302 HP @ 5600 RPM) has 84 more horse power than 2009 Audi A4. (218 HP @ 5900 RPM) In normal driving conditions, 2003 Mercedes-Benz SL should accelerate faster than 2009 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2003 Mercedes-Benz SL weights approximately 310 kg more than 2009 Audi A4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 Audi A4 is four wheel drive (4WD), it will have significant more traction and grip than 2003 Mercedes-Benz SL. In wet, icy, snow, or gravel driving conditions, 2009 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, 2003 Mercedes-Benz SL (460 Nm @ 2700 RPM) has 160 more torque (in Nm) than 2009 Audi A4. (300 Nm @ 2200 RPM). This means 2003 Mercedes-Benz SL will have an easier job in driving up hills or pulling heavy equipment than 2009 Audi A4. 2003 Mercedes-Benz SL has automatic transmission and 2009 Audi A4 has manual transmission. 2009 Audi A4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2003 Mercedes-Benz SL will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 Audi A4 | 2003 Mercedes-Benz SL | |
| Make | Audi | Mercedes-Benz |
| Model | A4 | SL |
| Year Released | 2009 | 2003 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 1984 cc | 4966 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 3 valves |
| Horse Power | 218 HP | 302 HP |
| Engine RPM | 5900 RPM | 5600 RPM |
| Torque | 300 Nm | 460 Nm |
| Torque RPM | 2200 RPM | 2700 RPM |
| Engine Bore Size | 82.5 mm | 97 mm |
| Engine Stroke Size | 92.8 mm | 84 mm |
| Engine Compression Ratio | 10.5:1 | 10.0:1 |
| Top Speed | 244 km/hour | 250 km/hour |
| Acceleration 0-100mph | 6.9 seconds | 6.3 seconds |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1595 kg | 1905 kg |
| Vehicle Length | 4610 mm | 4540 mm |
| Vehicle Width | 1780 mm | 1830 mm |
| Vehicle Height | 1400 mm | 1300 mm |
| Wheelbase Size | 2660 mm | 2520 mm |
| Fuel Tank Capacity | 63 L | 80 L |
