2007 Alfa Romeo 156 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 Alfa Romeo 156. In addition, the cost of maintenance, including insurance, on 2007 Alfa Romeo 156 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 Alfa Romeo 156. (190 HP @ 6300 RPM) In normal driving conditions, 2009 Mercedes-Benz S should accelerate faster than 2007 Alfa Romeo 156. With that said, vehicle weight also plays an important factor in acceleration. 2009 Mercedes-Benz S weights approximately 775 kg more than 2007 Alfa Romeo 156. 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 Alfa Romeo 156. 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 612 more torque (in Nm) than 2007 Alfa Romeo 156. (218 Nm @ 5000 RPM). This means 2009 Mercedes-Benz S will have an easier job in driving up hills or pulling heavy equipment than 2007 Alfa Romeo 156. 2009 Mercedes-Benz S has automatic transmission and 2007 Alfa Romeo 156 has manual transmission. 2007 Alfa Romeo 156 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 Mercedes-Benz S will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2007 Alfa Romeo 156 | 2009 Mercedes-Benz S | |
| Make | Alfa Romeo | Mercedes-Benz |
| Model | 156 | S |
| Year Released | 2007 | 2009 |
| Body Type | Station Wagon | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2492 cc | 5513 cc |
| Engine Cylinders | 6 cylinders | 12 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 3 valves |
| Horse Power | 190 HP | 510 HP |
| Engine RPM | 6300 RPM | 5000 RPM |
| Torque | 218 Nm | 830 Nm |
| Torque RPM | 5000 RPM | 1900 RPM |
| Engine Bore Size | 88 mm | 82 mm |
| Engine Stroke Size | 68.3 mm | 87 mm |
| Engine Compression Ratio | 10.3:1 | 9.0:1 |
| Fuel Type | Gasoline | Gasoline |
| Top Speed | 230 km/hour | 250 km/hour |
| Acceleration 0-100mph | 7.4 seconds | 4.9 seconds |
| Drive Type | Front | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1405 kg | 2180 kg |
| Vehicle Length | 4450 mm | 5210 mm |
| Vehicle Width | 1750 mm | 1480 mm |
| Vehicle Height | 1440 mm | 1880 mm |
| Wheelbase Size | 2600 mm | 3170 mm |
| Fuel Consumption Overall | 11.8 L/100km | 14.3 L/100km |
| Fuel Tank Capacity | 63 L | 90 L |
