2009 Alfa Romeo Spider vs. 2003 Fiat Siena
To start off, 2009 Alfa Romeo Spider is newer by 6 year(s). Which means there will be less support and parts availability for 2003 Fiat Siena. In addition, the cost of maintenance, including insurance, on 2003 Fiat Siena would be higher. At 3,195 cc (6 cylinders), 2009 Alfa Romeo Spider is equipped with a bigger engine. In terms of performance, 2009 Alfa Romeo Spider (256 HP @ 6300 RPM) has 197 more horse power than 2003 Fiat Siena. (59 HP @ 5200 RPM). In normal driving conditions, 2009 Alfa Romeo Spider should accelerate faster than 2003 Fiat Siena. With that said, vehicle weight also plays an important factor in acceleration. 2009 Alfa Romeo Spider weights approximately 725 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.
Because 2009 Alfa Romeo Spider is four wheel drive (4WD), it will have significant more traction and grip than 2003 Fiat Siena. In wet, icy, snow, or gravel driving conditions, 2009 Alfa Romeo Spider will offer significantly more control. 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, 2009 Alfa Romeo Spider (323 Nm @ 4500 RPM) has 220 more torque (in Nm) than 2003 Fiat Siena. (103 Nm @ 2500 RPM). This means 2009 Alfa Romeo Spider will have an easier job in driving up hills or pulling heavy equipment than 2003 Fiat Siena.
Compare all specifications:
| 2009 Alfa Romeo Spider | 2003 Fiat Siena | |
| Make | Alfa Romeo | Fiat |
| Model | Spider | Siena |
| Year Released | 2009 | 2003 |
| Body Type | Roadster | Sedan |
| Engine Position | Front | Front |
| Engine Size | 3195 cc | 1301 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 256 HP | 59 HP |
| Engine RPM | 6300 RPM | 5200 RPM |
| Torque | 323 Nm | 103 Nm |
| Torque RPM | 4500 RPM | 2500 RPM |
| Engine Bore Size | 89 mm | 70.8 mm |
| Engine Stroke Size | 85.6 mm | 78.9 mm |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | 4WD | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1765 kg | 1040 kg |
| Vehicle Length | 4400 mm | 4110 mm |
| Vehicle Width | 1840 mm | 1630 mm |
| Vehicle Height | 1320 mm | 1470 mm |
| Wheelbase Size | 2530 mm | 2380 mm |
