2009 Mercedes-Benz S vs. 2012 Acura RDX
To start off, 2012 Acura RDX is newer by 3 year(s). Which means there will be less support and parts availability for 2009 Mercedes-Benz S. In addition, the cost of maintenance, including insurance, on 2009 Mercedes-Benz S would be higher. At 5,513 cc (12 cylinders), 2009 Mercedes-Benz S is equipped with a bigger engine. In terms of performance, 2009 Mercedes-Benz S (510 HP @ 5000 RPM) has 270 more horse power than 2012 Acura RDX. (240 HP @ 6000 RPM). In normal driving conditions, 2009 Mercedes-Benz S should accelerate faster than 2012 Acura RDX. With that said, vehicle weight also plays an important factor in acceleration. 2009 Mercedes-Benz S weights approximately 397 kg more than 2012 Acura RDX. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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 S (830 Nm @ 1900 RPM) has 478 more torque (in Nm) than 2012 Acura RDX. (352 Nm @ 4500 RPM). This means 2009 Mercedes-Benz S will have an easier job in driving up hills or pulling heavy equipment than 2012 Acura RDX.
Compare all specifications:
| 2009 Mercedes-Benz S | 2012 Acura RDX | |
| Make | Mercedes-Benz | Acura |
| Model | S | RDX |
| Year Released | 2009 | 2012 |
| Body Type | Sedan | SUV |
| Engine Position | Front | Front |
| Engine Size | 5513 cc | 2300 cc |
| Engine Cylinders | 12 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 3 valves | 4 valves |
| Horse Power | 510 HP | 240 HP |
| Engine RPM | 5000 RPM | 6000 RPM |
| Torque | 830 Nm | 352 Nm |
| Torque RPM | 1900 RPM | 4500 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | AWD |
| Transmission Type | Automatic | 5-speed shiftable automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 2180 kg | 1783 kg |
| Vehicle Length | 5210 mm | 4636 mm |
| Vehicle Width | 1480 mm | 1869 mm |
| Vehicle Height | 1880 mm | 1654 mm |
| Wheelbase Size | 3170 mm | 2649 mm |
| Fuel Tank Capacity | 90 L | 68 L |
