2003 Fiat Siena vs. 2004 Kia Opirus
To start off, 2004 Kia Opirus is newer by 1 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 3,497 cc (6 cylinders), 2004 Kia Opirus is equipped with a bigger engine. In terms of performance, 2004 Kia Opirus (196 HP @ 5500 RPM) has 126 more horse power than 2003 Fiat Siena. (70 HP @ 5750 RPM) In normal driving conditions, 2004 Kia Opirus should accelerate faster than 2003 Fiat Siena. With that said, vehicle weight also plays an important factor in acceleration. 2004 Kia Opirus weights approximately 740 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, 2004 Kia Opirus (294 Nm @ 3500 RPM) has 199 more torque (in Nm) than 2003 Fiat Siena. (95 Nm @ 4000 RPM). This means 2004 Kia Opirus will have an easier job in driving up hills or pulling heavy equipment than 2003 Fiat Siena. 2004 Kia Opirus has automatic transmission and 2003 Fiat Siena has manual transmission. 2003 Fiat Siena will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2004 Kia Opirus will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2003 Fiat Siena | 2004 Kia Opirus | |
| Make | Fiat | Kia |
| Model | Siena | Opirus |
| Year Released | 2003 | 2004 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 999 cc | 3497 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 70 HP | 196 HP |
| Engine RPM | 5750 RPM | 5500 RPM |
| Torque | 95 Nm | 294 Nm |
| Torque RPM | 4000 RPM | 3500 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | Front |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1020 kg | 1760 kg |
| Vehicle Length | 4110 mm | 4960 mm |
| Vehicle Width | 1630 mm | 1860 mm |
| Vehicle Height | 1470 mm | 1490 mm |
| Wheelbase Size | 2380 mm | 2810 mm |
