2003 Fiat Doblo vs. 2006 Fiat Siena
To start off, 2006 Fiat Siena is newer by 3 year(s). Which means there will be less support and parts availability for 2003 Fiat Doblo. In addition, the cost of maintenance, including insurance, on 2003 Fiat Doblo would be higher. At 1,581 cc (4 cylinders), 2006 Fiat Siena is equipped with a bigger engine. In terms of performance, 2006 Fiat Siena (100 HP @ 5500 RPM) has 38 more horse power than 2003 Fiat Doblo. (62 HP @ 5800 RPM) In normal driving conditions, 2006 Fiat Siena should accelerate faster than 2003 Fiat Doblo. With that said, vehicle weight also plays an important factor in acceleration. 2006 Fiat Siena weights approximately 563 kg more than 2003 Fiat Doblo. 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 Fiat Doblo (103 Nm @ 3500 RPM) has 29 more torque (in Nm) than 2006 Fiat Siena. (74 Nm @ 5500 RPM). This means 2003 Fiat Doblo will have an easier job in driving up hills or pulling heavy equipment than 2006 Fiat Siena.
Compare all specifications:
| 2003 Fiat Doblo | 2006 Fiat Siena | |
| Make | Fiat | Fiat |
| Model | Doblo | Siena |
| Year Released | 2003 | 2006 |
| Body Type | Panel Van | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1242 cc | 1581 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 62 HP | 100 HP |
| Engine RPM | 5800 RPM | 5500 RPM |
| Torque | 103 Nm | 74 Nm |
| Torque RPM | 3500 RPM | 5500 RPM |
| Engine Compression Ratio | 11.0:1 | 9.5:1 |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Weight | 1220 kg | 1783 kg |
| Vehicle Length | 4170 mm | 3830 mm |
| Vehicle Width | 1720 mm | 1640 mm |
| Vehicle Height | 1810 mm | 1440 mm |
| Wheelbase Size | 2580 mm | 2380 mm |
