2006 Alfa Romeo 147 vs. 2010 Fiat Siena
To start off, 2010 Fiat Siena is newer by 4 year(s). Which means there will be less support and parts availability for 2006 Alfa Romeo 147. In addition, the cost of maintenance, including insurance, on 2006 Alfa Romeo 147 would be higher. At 1,909 cc (4 cylinders), 2006 Alfa Romeo 147 is equipped with a bigger engine. In terms of performance, 2006 Alfa Romeo 147 (148 HP @ 4000 RPM) has 42 more horse power than 2010 Fiat Siena. (106 HP @ 5500 RPM). In normal driving conditions, 2006 Alfa Romeo 147 should accelerate faster than 2010 Fiat Siena. With that said, vehicle weight also plays an important factor in acceleration. 2006 Alfa Romeo 147 weights approximately 270 kg more than 2010 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 147 (305 Nm @ 2000 RPM) has 165 more torque (in Nm) than 2010 Fiat Siena. (140 Nm @ 4000 RPM). This means 2006 Alfa Romeo 147 will have an easier job in driving up hills or pulling heavy equipment than 2010 Fiat Siena.
Compare all specifications:
| 2006 Alfa Romeo 147 | 2010 Fiat Siena | |
| Make | Alfa Romeo | Fiat |
| Model | 147 | Siena |
| Year Released | 2006 | 2010 |
| Engine Position | Front | Front |
| Engine Size | 1909 cc | 1581 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 148 HP | 106 HP |
| Engine RPM | 4000 RPM | 5500 RPM |
| Torque | 305 Nm | 140 Nm |
| Torque RPM | 2000 RPM | 4000 RPM |
| Engine Bore Size | 82 mm | 86.5 mm |
| Engine Stroke Size | 90.4 mm | 67.4 mm |
| Engine Compression Ratio | 18.0:1 | 10.2:1 |
| Fuel Type | Diesel | Gasoline |
| Acceleration 0-100mph | 8.8 seconds | 10.5 seconds |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1365 kg | 1095 kg |
| Vehicle Length | 4230 mm | 3550 mm |
| Vehicle Width | 1740 mm | 1640 mm |
| Vehicle Height | 1450 mm | 1490 mm |
| Wheelbase Size | 2550 mm | 2370 mm |
| Fuel Consumption Overall | 5.9 L/100km | 8.2 L/100km |
| Fuel Tank Capacity | 60 L | 47 L |
