2008 Audi A8 vs. 2009 Mercedes-Benz SL
To start off, 2009 Mercedes-Benz SL is newer by 1 year(s). Which means there will be less support and parts availability for 2008 Audi A8. In addition, the cost of maintenance, including insurance, on 2008 Audi A8 would be higher. At 5,998 cc, 2008 Audi A8 is equipped with a bigger engine. In terms of performance, 2009 Mercedes-Benz SL (605 HP) has 155 more horse power than 2008 Audi A8. (450 HP) In normal driving conditions, 2009 Mercedes-Benz SL should accelerate faster than 2008 Audi A8.
Because 2008 Audi A8 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, 2008 Audi A8 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 (1,000 Nm) has 420 more torque (in Nm) than 2008 Audi A8. (580 Nm). This means 2009 Mercedes-Benz SL will have an easier job in driving up hills or pulling heavy equipment than 2008 Audi A8. 2008 Audi A8 has automatic transmission and 2009 Mercedes-Benz SL has manual transmission. 2009 Mercedes-Benz SL will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2008 Audi A8 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2008 Audi A8 | 2009 Mercedes-Benz SL | |
| Make | Audi | Mercedes-Benz |
| Model | A8 | SL |
| Year Released | 2008 | 2009 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 5998 cc | 5980 cc |
| Engine Type | W | V |
| Valves per Cylinder | 4 valves | 3 valves |
| Horse Power | 450 HP | 605 HP |
| Torque | 580 Nm | 1000 Nm |
| Engine Bore Size | 84 mm | 82.6 mm |
| Engine Stroke Size | 90.2 mm | 93 mm |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 4 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Length | 5200 mm | 4540 mm |
| Vehicle Width | 1900 mm | 1820 mm |
| Vehicle Height | 1460 mm | 1300 mm |
| Wheelbase Size | 3080 mm | 2570 mm |
| Fuel Consumption | 11.2 L/100km | 13.1 L/100km |
| Fuel Consumption City | 15.7 L/100km | 21.4 L/100km |
| Fuel Consumption Overall | 13.8 L/100km | 16.8 L/100km |
| Fuel Tank Capacity | 90 L | 80 L |
