2009 Toyota Prius vs. 2010 Fiat Siena
To start off, 2010 Fiat Siena is newer by 1 year(s). Which means there will be less support and parts availability for 2009 Toyota Prius. In addition, the cost of maintenance, including insurance, on 2009 Toyota Prius would be higher. At 1,581 cc (4 cylinders), 2010 Fiat Siena is equipped with a bigger engine. In terms of performance, 2009 Toyota Prius (110 HP @ 5000 RPM) has 4 more horse power than 2010 Fiat Siena. (106 HP @ 5500 RPM). In normal driving conditions, 2009 Toyota Prius should accelerate faster than 2010 Fiat Siena. With that said, vehicle weight also plays an important factor in acceleration. 2009 Toyota Prius weights approximately 589 kg more than 2010 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, 2010 Fiat Siena (140 Nm @ 4000 RPM) has 29 more torque (in Nm) than 2009 Toyota Prius. (111 Nm @ 4200 RPM). This means 2010 Fiat Siena will have an easier job in driving up hills or pulling heavy equipment than 2009 Toyota Prius. 2009 Toyota Prius has automatic transmission and 2010 Fiat Siena has manual transmission. 2010 Fiat Siena will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 Toyota Prius will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 Toyota Prius | 2010 Fiat Siena | |
| Make | Toyota | Fiat |
| Model | Prius | Siena |
| Year Released | 2009 | 2010 |
| Body Type | Hatchback | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1497 cc | 1581 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 110 HP | 106 HP |
| Engine RPM | 5000 RPM | 5500 RPM |
| Torque | 111 Nm | 140 Nm |
| Torque RPM | 4200 RPM | 4000 RPM |
| Fuel Type | Gasoline / Electric Hybrid | Gasoline |
| Drive Type | Front | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1684 kg | 1095 kg |
| Vehicle Length | 4450 mm | 3550 mm |
| Vehicle Width | 1730 mm | 1640 mm |
| Vehicle Height | 1500 mm | 1490 mm |
| Wheelbase Size | 2710 mm | 2370 mm |
| Fuel Consumption Overall | 5.1 L/100km | 8.2 L/100km |
| Fuel Tank Capacity | 45 L | 47 L |
