2009 Audi Q7 vs. 2003 Mercedes-Benz S
To start off, 2009 Audi Q7 is newer by 6 year(s). Which means there will be less support and parts availability for 2003 Mercedes-Benz S. In addition, the cost of maintenance, including insurance, on 2003 Mercedes-Benz S would be higher. At 4,266 cc (8 cylinders), 2003 Mercedes-Benz S is equipped with a bigger engine. In terms of performance, 2003 Mercedes-Benz S (276 HP @ 5750 RPM) has 39 more horse power than 2009 Audi Q7. (237 HP @ 4000 RPM) In normal driving conditions, 2003 Mercedes-Benz S should accelerate faster than 2009 Audi Q7. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi Q7 weights approximately 415 kg more than 2003 Mercedes-Benz S.
Both vehicles are four wheel drive (4WD) - it offers better handling, traction, and control in all driving conditions compared with front wheel drive or rear wheel drive vehicles. 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 Audi Q7 (550 Nm @ 2000 RPM) has 150 more torque (in Nm) than 2003 Mercedes-Benz S. (400 Nm @ 3000 RPM). This means 2009 Audi Q7 will have an easier job in driving up hills or pulling heavy equipment than 2003 Mercedes-Benz S.
Compare all specifications:
| 2009 Audi Q7 | 2003 Mercedes-Benz S | |
| Make | Audi | Mercedes-Benz |
| Model | Q7 | S |
| Year Released | 2009 | 2003 |
| Body Type | SUV | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2967 cc | 4266 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 3 valves |
| Horse Power | 237 HP | 276 HP |
| Engine RPM | 4000 RPM | 5750 RPM |
| Torque | 550 Nm | 400 Nm |
| Torque RPM | 2000 RPM | 3000 RPM |
| Engine Bore Size | 83.1 mm | 89.9 mm |
| Engine Stroke Size | 91.4 mm | 84 mm |
| Engine Compression Ratio | 17.0:1 | 10.0:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Acceleration 0-100mph | 8.5 seconds | 7.4 seconds |
| Drive Type | 4WD | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 2370 kg | 1955 kg |
| Vehicle Length | 5090 mm | 5050 mm |
| Vehicle Width | 1990 mm | 1860 mm |
| Vehicle Height | 1740 mm | 1460 mm |
| Wheelbase Size | 3010 mm | 2860 mm |
| Fuel Consumption Overall | 9.8 L/100km | 12.5 L/100km |
| Fuel Tank Capacity | 100 L | 88 L |
