2008 Audi A8 vs. 2005 Mercedes-Benz S
To start off, 2008 Audi A8 is newer by 3 year(s). Which means there will be less support and parts availability for 2005 Mercedes-Benz S. In addition, the cost of maintenance, including insurance, on 2005 Mercedes-Benz S would be higher. At 5,439 cc (8 cylinders), 2005 Mercedes-Benz S is equipped with a bigger engine. In terms of performance, 2005 Mercedes-Benz S (363 HP @ 6100 RPM) has 92 more horse power than 2008 Audi A8. (271 HP @ 3750 RPM) In normal driving conditions, 2005 Mercedes-Benz S should accelerate faster than 2008 Audi A8. With that said, vehicle weight also plays an important factor in acceleration. 2005 Mercedes-Benz S weights approximately 45 kg more than 2008 Audi A8. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2008 Audi A8 is four wheel drive (4WD), it will have significant more traction and grip than 2005 Mercedes-Benz S. 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, 2008 Audi A8 (650 Nm @ 1800 RPM) has 120 more torque (in Nm) than 2005 Mercedes-Benz S. (530 Nm @ 3150 RPM). This means 2008 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2005 Mercedes-Benz S.
Compare all specifications:
| 2008 Audi A8 | 2005 Mercedes-Benz S | |
| Make | Audi | Mercedes-Benz |
| Model | A8 | S |
| Year Released | 2008 | 2005 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 3934 cc | 5439 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 3 valves |
| Horse Power | 271 HP | 363 HP |
| Engine RPM | 3750 RPM | 6100 RPM |
| Torque | 650 Nm | 530 Nm |
| Torque RPM | 1800 RPM | 3150 RPM |
| Engine Bore Size | 81 mm | 97 mm |
| Engine Stroke Size | 95.5 mm | 92 mm |
| Engine Compression Ratio | 18.0:1 | 10.5:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Top Speed | 250 km/hour | 250 km/hour |
| Acceleration 0-100mph | 6.7 seconds | 4.8 seconds |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1940 kg | 1985 kg |
| Vehicle Length | 5060 mm | 5050 mm |
| Vehicle Width | 1900 mm | 1860 mm |
| Vehicle Height | 1450 mm | 1450 mm |
| Wheelbase Size | 2950 mm | 2910 mm |
| Fuel Consumption Overall | 9.7 L/100km | 13.3 L/100km |
| Fuel Tank Capacity | 90 L | 88 L |
