2007 Alfa Romeo 166 vs. 2008 Fiat Siena
To start off, 2008 Fiat Siena is newer by 1 year(s). Which means there will be less support and parts availability for 2007 Alfa Romeo 166. In addition, the cost of maintenance, including insurance, on 2007 Alfa Romeo 166 would be higher. At 2,387 cc (5 cylinders), 2007 Alfa Romeo 166 is equipped with a bigger engine. In terms of performance, 2007 Alfa Romeo 166 (178 HP @ 4000 RPM) has 72 more horse power than 2008 Fiat Siena. (106 HP @ 5500 RPM). In normal driving conditions, 2007 Alfa Romeo 166 should accelerate faster than 2008 Fiat Siena. With that said, vehicle weight also plays an important factor in acceleration. 2007 Alfa Romeo 166 weights approximately 520 kg more than 2008 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, 2007 Alfa Romeo 166 (385 Nm @ 2000 RPM) has 245 more torque (in Nm) than 2008 Fiat Siena. (140 Nm @ 4000 RPM). This means 2007 Alfa Romeo 166 will have an easier job in driving up hills or pulling heavy equipment than 2008 Fiat Siena.
Compare all specifications:
| 2007 Alfa Romeo 166 | 2008 Fiat Siena | |
| Make | Alfa Romeo | Fiat |
| Model | 166 | Siena |
| Year Released | 2007 | 2008 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2387 cc | 1581 cc |
| Engine Cylinders | 5 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 178 HP | 106 HP |
| Engine RPM | 4000 RPM | 5500 RPM |
| Torque | 385 Nm | 140 Nm |
| Torque RPM | 2000 RPM | 4000 RPM |
| Engine Compression Ratio | 18.5:1 | 10.2:1 |
| Fuel Type | Diesel | Gasoline |
| Acceleration 0-100mph | 8.9 seconds | 10.5 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 | 1095 kg |
| Vehicle Length | 4730 mm | 3550 mm |
| Vehicle Width | 1810 mm | 1640 mm |
| Vehicle Height | 1420 mm | 1490 mm |
| Wheelbase Size | 2710 mm | 2370 mm |
| Fuel Consumption Overall | 7.5 L/100km | 8.2 L/100km |
| Fuel Tank Capacity | 69 L | 47 L |
