2003 Alfa Romeo 156 vs. 2005 Mercedes-Benz B
To start off, 2005 Mercedes-Benz B is newer by 2 year(s). Which means there will be less support and parts availability for 2003 Alfa Romeo 156. In addition, the cost of maintenance, including insurance, on 2003 Alfa Romeo 156 would be higher. At 1,991 cc (4 cylinders), 2005 Mercedes-Benz B is equipped with a bigger engine. In terms of performance, 2003 Alfa Romeo 156 (138 HP @ 4000 RPM) has 30 more horse power than 2005 Mercedes-Benz B. (108 HP @ 4200 RPM). In normal driving conditions, 2003 Alfa Romeo 156 should accelerate faster than 2005 Mercedes-Benz B. With that said, vehicle weight also plays an important factor in acceleration. 2005 Mercedes-Benz B weights approximately 127 kg more than 2003 Alfa Romeo 156.
Both vehicles are front wheel drive (FWD). Which offers better traction when its slippery than 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, 2003 Alfa Romeo 156 (305 Nm @ 2000 RPM) has 55 more torque (in Nm) than 2005 Mercedes-Benz B. (250 Nm @ 1600 RPM). This means 2003 Alfa Romeo 156 will have an easier job in driving up hills or pulling heavy equipment than 2005 Mercedes-Benz B.
Compare all specifications:
| 2003 Alfa Romeo 156 | 2005 Mercedes-Benz B | |
| Make | Alfa Romeo | Mercedes-Benz |
| Model | 156 | B |
| Year Released | 2003 | 2005 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 1910 cc | 1991 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 138 HP | 108 HP |
| Engine RPM | 4000 RPM | 4200 RPM |
| Torque | 305 Nm | 250 Nm |
| Torque RPM | 2000 RPM | 1600 RPM |
| Engine Bore Size | 82 mm | 83 mm |
| Engine Stroke Size | 90.4 mm | 92 mm |
| Engine Compression Ratio | 18.5:1 | 18.0:1 |
| Fuel Type | Diesel | Diesel |
| Top Speed | 209 km/hour | 183 km/hour |
| Acceleration 0-100mph | 9.3 seconds | 11.3 seconds |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1308 kg | 1435 kg |
| Vehicle Length | 4440 mm | 4280 mm |
| Vehicle Width | 1750 mm | 1780 mm |
| Vehicle Height | 1440 mm | 1610 mm |
| Wheelbase Size | 2600 mm | 2860 mm |
| Fuel Consumption Overall | 5.9 L/100km | 5.8 L/100km |
| Fuel Tank Capacity | 63 L | 54 L |
