2003 Alfa Romeo 156 vs. 2003 Fiat Siena
To start off, both 2003 Alfa Romeo 156 and 2003 Fiat Siena were released in the same year (2003). Therefore the support and the availability on parts for both vehicles should be relatively similar. At 2,492 cc (5 cylinders), 2003 Alfa Romeo 156 is equipped with a bigger engine. In terms of performance, 2003 Alfa Romeo 156 (172 HP @ 4000 RPM) has 73 more horse power than 2003 Fiat Siena. (99 HP @ 6000 RPM). In normal driving conditions, 2003 Alfa Romeo 156 should accelerate faster than 2003 Fiat Siena. With that said, vehicle weight also plays an important factor in acceleration. 2003 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, 2003 Alfa Romeo 156 (385 Nm @ 2000 RPM) has 239 more torque (in Nm) than 2003 Fiat Siena. (146 Nm @ 4000 RPM). This means 2003 Alfa Romeo 156 will have an easier job in driving up hills or pulling heavy equipment than 2003 Fiat Siena.
Compare all specifications:
| 2003 Alfa Romeo 156 | 2003 Fiat Siena | |
| Make | Alfa Romeo | Fiat |
| Model | 156 | Siena |
| Year Released | 2003 | 2003 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2492 cc | 1596 cc |
| Engine Cylinders | 5 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 172 HP | 99 HP |
| Engine RPM | 4000 RPM | 6000 RPM |
| Torque | 385 Nm | 146 Nm |
| Torque RPM | 2000 RPM | 4000 RPM |
| Fuel Type | Diesel | Gasoline |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1385 kg | 1050 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 |
