2006 Alfa Romeo 159 vs. 2007 Fiat Siena
To start off, 2007 Fiat Siena is newer by 1 year(s). Which means there will be less support and parts availability for 2006 Alfa Romeo 159. In addition, the cost of maintenance, including insurance, on 2006 Alfa Romeo 159 would be higher. At 1,908 cc (4 cylinders), 2006 Alfa Romeo 159 is equipped with a bigger engine. In terms of performance, 2006 Alfa Romeo 159 (158 HP @ 6500 RPM) has 58 more horse power than 2007 Fiat Siena. (100 HP @ 5500 RPM). In normal driving conditions, 2006 Alfa Romeo 159 should accelerate faster than 2007 Fiat Siena. With that said, vehicle weight also plays an important factor in acceleration. 2006 Alfa Romeo 159 weights approximately 485 kg more than 2007 Fiat Siena. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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, 2006 Alfa Romeo 159 (190 Nm @ 4500 RPM) has 50 more torque (in Nm) than 2007 Fiat Siena. (140 Nm @ 4000 RPM). This means 2006 Alfa Romeo 159 will have an easier job in driving up hills or pulling heavy equipment than 2007 Fiat Siena.
Compare all specifications:
| 2006 Alfa Romeo 159 | 2007 Fiat Siena | |
| Make | Alfa Romeo | Fiat |
| Model | 159 | Siena |
| Year Released | 2006 | 2007 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1908 cc | 1581 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 158 HP | 100 HP |
| Engine RPM | 6500 RPM | 5500 RPM |
| Torque | 190 Nm | 140 Nm |
| Torque RPM | 4500 RPM | 4000 RPM |
| Engine Compression Ratio | 11.3:1 | 9.5:1 |
| Fuel Type | Gasoline | Gasoline |
| Top Speed | 212 km/hour | 179 km/hour |
| Acceleration 0-100mph | 9.7 seconds | 11.5 seconds |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1555 kg | 1070 kg |
| Vehicle Width | 1830 mm | 1640 mm |
| Wheelbase Size | 2710 mm | 2380 mm |
| Fuel Consumption Overall | 8.7 L/100km | 8.2 L/100km |
