2005 Alfa Romeo 166 vs. 2011 Fiat Siena
To start off, 2011 Fiat Siena is newer by 6 year(s). Which means there will be less support and parts availability for 2005 Alfa Romeo 166. In addition, the cost of maintenance, including insurance, on 2005 Alfa Romeo 166 would be higher. At 2,492 cc (5 cylinders), 2005 Alfa Romeo 166 is equipped with a bigger engine. In terms of performance, 2005 Alfa Romeo 166 (173 HP @ 4000 RPM) has 73 more horse power than 2011 Fiat Siena. (100 HP @ 5500 RPM). In normal driving conditions, 2005 Alfa Romeo 166 should accelerate faster than 2011 Fiat Siena. With that said, vehicle weight also plays an important factor in acceleration. 2005 Alfa Romeo 166 weights approximately 541 kg more than 2011 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, 2005 Alfa Romeo 166 (385 Nm @ 2000 RPM) has 311 more torque (in Nm) than 2011 Fiat Siena. (74 Nm @ 5500 RPM). This means 2005 Alfa Romeo 166 will have an easier job in driving up hills or pulling heavy equipment than 2011 Fiat Siena.
Compare all specifications:
| 2005 Alfa Romeo 166 | 2011 Fiat Siena | |
| Make | Alfa Romeo | Fiat |
| Model | 166 | Siena |
| Year Released | 2005 | 2011 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2492 cc | 1581 cc |
| Engine Cylinders | 5 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 173 HP | 100 HP |
| Engine RPM | 4000 RPM | 5500 RPM |
| Torque | 385 Nm | 74 Nm |
| Torque RPM | 2000 RPM | 5500 RPM |
| Engine Compression Ratio | 18.5:1 | 9.5:1 |
| Fuel Type | Diesel | Gasoline |
| Top Speed | 217 km/hour | 184 km/hour |
| Acceleration 0-100mph | 8.9 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 | 1615 kg | 1074 kg |
| Vehicle Length | 4730 mm | 3550 mm |
| Vehicle Width | 1810 mm | 1640 mm |
| Vehicle Height | 1420 mm | 1440 mm |
| Wheelbase Size | 2600 mm | 2380 mm |
| Fuel Consumption Overall | 7.2 L/100km | 8.2 L/100km |
| Fuel Tank Capacity | 72 L | 54 L |
