2006 Fiat Siena vs. 2007 Mercedes-Benz B
To start off, 2007 Mercedes-Benz B is newer by 1 year(s). Which means there will be less support and parts availability for 2006 Fiat Siena. In addition, the cost of maintenance, including insurance, on 2006 Fiat Siena would be higher. At 1,991 cc (4 cylinders), 2007 Mercedes-Benz B is equipped with a bigger engine. In terms of performance, 2007 Mercedes-Benz B (138 HP @ 4200 RPM) has 37 more horse power than 2006 Fiat Siena. (101 HP @ 5500 RPM) In normal driving conditions, 2007 Mercedes-Benz B should accelerate faster than 2006 Fiat Siena. With that said, vehicle weight also plays an important factor in acceleration. 2006 Fiat Siena weights approximately 409 kg more than 2007 Mercedes-Benz B.
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, 2007 Mercedes-Benz B (300 Nm @ 1600 RPM) has 160 more torque (in Nm) than 2006 Fiat Siena. (140 Nm @ 4000 RPM). This means 2007 Mercedes-Benz B will have an easier job in driving up hills or pulling heavy equipment than 2006 Fiat Siena. 2007 Mercedes-Benz B has automatic transmission and 2006 Fiat Siena has manual transmission. 2006 Fiat Siena will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 Mercedes-Benz B will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2006 Fiat Siena | 2007 Mercedes-Benz B | |
| Make | Fiat | Mercedes-Benz |
| Model | Siena | B |
| Year Released | 2006 | 2007 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 1581 cc | 1991 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 101 HP | 138 HP |
| Engine RPM | 5500 RPM | 4200 RPM |
| Torque | 140 Nm | 300 Nm |
| Torque RPM | 4000 RPM | 1600 RPM |
| Engine Bore Size | 86.4 mm | 83 mm |
| Engine Stroke Size | 67.4 mm | 92 mm |
| Engine Compression Ratio | 9.5:1 | 18.0:1 |
| Top Speed | 184 km/hour | 200 km/hour |
| Acceleration 0-100mph | 11.1 seconds | 7.6 seconds |
| Drive Type | Front | Front |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1783 kg | 1374 kg |
| Vehicle Length | 3830 mm | 4280 mm |
| Vehicle Width | 1640 mm | 1780 mm |
| Vehicle Height | 1440 mm | 1610 mm |
| Wheelbase Size | 2380 mm | 2780 mm |
| Fuel Consumption Overall | 8 L/100km | 5.8 L/100km |
| Fuel Tank Capacity | 54 L | 54 L |
