2007 Mercedes-Benz B vs. 2009 Mercedes-Benz S
To start off, 2009 Mercedes-Benz S is newer by 2 year(s). Which means there will be less support and parts availability for 2007 Mercedes-Benz B. In addition, the cost of maintenance, including insurance, on 2007 Mercedes-Benz B 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 320 more horse power than 2007 Mercedes-Benz B. (190 HP @ 5000 RPM) In normal driving conditions, 2009 Mercedes-Benz S should accelerate faster than 2007 Mercedes-Benz B. With that said, vehicle weight also plays an important factor in acceleration. 2009 Mercedes-Benz S weights approximately 810 kg more than 2007 Mercedes-Benz B. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 Mercedes-Benz S is four wheel drive (4WD), it will have significant more traction and grip than 2007 Mercedes-Benz B. In wet, icy, snow, or gravel driving conditions, 2009 Mercedes-Benz S 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 S (830 Nm @ 1900 RPM) has 550 more torque (in Nm) than 2007 Mercedes-Benz B. (280 Nm @ 1800 RPM). This means 2009 Mercedes-Benz S will have an easier job in driving up hills or pulling heavy equipment than 2007 Mercedes-Benz B.
Compare all specifications:
| 2007 Mercedes-Benz B | 2009 Mercedes-Benz S | |
| Make | Mercedes-Benz | Mercedes-Benz |
| Model | B | S |
| Year Released | 2007 | 2009 |
| Body Type | Hatchback | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2034 cc | 5513 cc |
| Engine Cylinders | 4 cylinders | 12 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 3 valves |
| Horse Power | 190 HP | 510 HP |
| Engine RPM | 5000 RPM | 5000 RPM |
| Torque | 280 Nm | 830 Nm |
| Torque RPM | 1800 RPM | 1900 RPM |
| Engine Bore Size | 83.1 mm | 82 mm |
| Engine Stroke Size | 94 mm | 87 mm |
| Engine Compression Ratio | 9.0:1 | 9.0:1 |
| Fuel Type | Gasoline | Gasoline |
| Acceleration 0-100mph | 7.6 seconds | 4.9 seconds |
| Drive Type | Rear | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1370 kg | 2180 kg |
| Vehicle Length | 4280 mm | 5210 mm |
| Vehicle Width | 1610 mm | 1480 mm |
| Vehicle Height | 1780 mm | 1880 mm |
| Wheelbase Size | 2780 mm | 3170 mm |
| Fuel Consumption Overall | 8.2 L/100km | 14.3 L/100km |
| Fuel Tank Capacity | 54 L | 90 L |
