2007 Audi A3 vs. 2004 Mercedes-Benz SL
To start off, 2007 Audi A3 is newer by 3 year(s). Which means there will be less support and parts availability for 2004 Mercedes-Benz SL. In addition, the cost of maintenance, including insurance, on 2004 Mercedes-Benz SL would be higher. At 5,439 cc (12 cylinders), 2004 Mercedes-Benz SL is equipped with a bigger engine. In terms of performance, 2004 Mercedes-Benz SL (493 HP @ 4200 RPM) has 355 more horse power than 2007 Audi A3. (138 HP @ 4000 RPM) In normal driving conditions, 2004 Mercedes-Benz SL should accelerate faster than 2007 Audi A3. With that said, vehicle weight also plays an important factor in acceleration. 2004 Mercedes-Benz SL weights approximately 504 kg more than 2007 Audi A3. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2007 Audi A3 is four wheel drive (4WD), it will have significant more traction and grip than 2004 Mercedes-Benz SL. In wet, icy, snow, or gravel driving conditions, 2007 Audi A3 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, 2004 Mercedes-Benz SL (800 Nm) has 480 more torque (in Nm) than 2007 Audi A3. (320 Nm). This means 2004 Mercedes-Benz SL will have an easier job in driving up hills or pulling heavy equipment than 2007 Audi A3.
Compare all specifications:
| 2007 Audi A3 | 2004 Mercedes-Benz SL | |
| Make | Audi | Mercedes-Benz |
| Model | A3 | SL |
| Year Released | 2007 | 2004 |
| Body Type | Hatchback | Convertible |
| Engine Position | Front | Front |
| Engine Size | 1967 cc | 5439 cc |
| Engine Cylinders | 4 cylinders | 12 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 3 valves |
| Horse Power | 138 HP | 493 HP |
| Engine RPM | 4000 RPM | 4200 RPM |
| Torque | 320 Nm | 800 Nm |
| Engine Bore Size | 81 mm | 82.1 mm |
| Engine Stroke Size | 95.5 mm | 87 mm |
| Engine Compression Ratio | 18.0:1 | 9.0:1 |
| Drive Type | 4WD | Rear |
| Number of Seats | 4 seats | 2 seats |
| Number of Doors | 3 doors | 2 doors |
| Vehicle Weight | 1505 kg | 2009 kg |
| Vehicle Length | 4210 mm | 4540 mm |
| Vehicle Width | 1770 mm | 1840 mm |
| Vehicle Height | 1430 mm | 1300 mm |
| Wheelbase Size | 2580 mm | 2570 mm |
| Fuel Tank Capacity | 60 L | 80 L |
