2002 Alfa Romeo 156 vs. 2003 Fiat Siena
To start off, 2003 Fiat Siena is newer by 1 year(s). Which means there will be less support and parts availability for 2002 Alfa Romeo 156. In addition, the cost of maintenance, including insurance, on 2002 Alfa Romeo 156 would be higher. At 2,385 cc (5 cylinders), 2002 Alfa Romeo 156 is equipped with a bigger engine. In terms of performance, 2002 Alfa Romeo 156 (148 HP @ 4000 RPM) has 79 more horse power than 2003 Fiat Siena. (69 HP @ 4500 RPM). In normal driving conditions, 2002 Alfa Romeo 156 should accelerate faster than 2003 Fiat Siena. With that said, vehicle weight also plays an important factor in acceleration. 2002 Alfa Romeo 156 weights approximately 335 kg more than 2003 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, 2002 Alfa Romeo 156 (305 Nm @ 1800 RPM) has 177 more torque (in Nm) than 2003 Fiat Siena. (128 Nm @ 2500 RPM). This means 2002 Alfa Romeo 156 will have an easier job in driving up hills or pulling heavy equipment than 2003 Fiat Siena.
Compare all specifications:
| 2002 Alfa Romeo 156 | 2003 Fiat Siena | |
| Make | Alfa Romeo | Fiat |
| Model | 156 | Siena |
| Year Released | 2002 | 2003 |
| Body Type | Station Wagon | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2385 cc | 1747 cc |
| Engine Cylinders | 5 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 148 HP | 69 HP |
| Engine RPM | 4000 RPM | 4500 RPM |
| Torque | 305 Nm | 128 Nm |
| Torque RPM | 1800 RPM | 2500 RPM |
| Engine Bore Size | 82 mm | 82.7 mm |
| Engine Stroke Size | 90.4 mm | 79.2 mm |
| Engine Compression Ratio | 18.5:1 | 20.3:1 |
| Fuel Type | Diesel | Diesel |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1435 kg | 1100 kg |
| Vehicle Length | 4440 mm | 4110 mm |
| Vehicle Width | 1750 mm | 1630 mm |
| Vehicle Height | 1440 mm | 1470 mm |
| Wheelbase Size | 2600 mm | 2380 mm |
