2003 Fiat Idea vs. 2007 Fiat Siena
To start off, 2007 Fiat Siena is newer by 4 year(s). Which means there will be less support and parts availability for 2003 Fiat Idea. In addition, the cost of maintenance, including insurance, on 2003 Fiat Idea would be higher. At 1,581 cc (4 cylinders), 2007 Fiat Siena is equipped with a bigger engine. In terms of performance, 2007 Fiat Siena (100 HP @ 5500 RPM) has 6 more horse power than 2003 Fiat Idea. (94 HP @ 5800 RPM) In normal driving conditions, 2007 Fiat Siena should accelerate faster than 2003 Fiat Idea. With that said, vehicle weight also plays an important factor in acceleration. 2003 Fiat Idea weights approximately 90 kg more than 2007 Fiat Siena.
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 Idea (128 Nm) has 53 more torque (in Nm) than 2007 Fiat Siena. (75 Nm). This means 2003 Fiat Idea will have an easier job in driving up hills or pulling heavy equipment than 2007 Fiat Siena.
Compare all specifications:
| 2003 Fiat Idea | 2007 Fiat Siena | |
| Make | Fiat | Fiat |
| Model | Idea | Siena |
| Year Released | 2003 | 2007 |
| Body Type | Hatchback | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1367 cc | 1581 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 94 HP | 100 HP |
| Engine RPM | 5800 RPM | 5500 RPM |
| Torque | 128 Nm | 75 Nm |
| Engine Bore Size | 72 mm | 86.4 mm |
| Engine Stroke Size | 84 mm | 67.4 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1160 kg | 1070 kg |
| Vehicle Width | 1710 mm | 1640 mm |
| Vehicle Height | 1670 mm | 1440 mm |
