2009 Kia Opirus vs. 2003 Toyota Sienna
To start off, 2009 Kia Opirus is newer by 6 year(s). Which means there will be less support and parts availability for 2003 Toyota Sienna. In addition, the cost of maintenance, including insurance, on 2003 Toyota Sienna would be higher. At 3,497 cc (6 cylinders), 2009 Kia Opirus is equipped with a bigger engine. In terms of performance, 2009 Kia Opirus (200 HP @ 5500 RPM) has 27 more horse power than 2003 Toyota Sienna. (173 HP @ 5400 RPM). In normal driving conditions, 2009 Kia Opirus should accelerate faster than 2003 Toyota Sienna. With that said, vehicle weight also plays an important factor in acceleration. 2009 Kia Opirus weights approximately 192 kg more than 2003 Toyota Sienna. 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, 2009 Kia Opirus (298 Nm @ 3500 RPM) has 4 more torque (in Nm) than 2003 Toyota Sienna. (294 Nm @ 4300 RPM). This means 2009 Kia Opirus will have an easier job in driving up hills or pulling heavy equipment than 2003 Toyota Sienna.
Compare all specifications:
| 2009 Kia Opirus | 2003 Toyota Sienna | |
| Make | Kia | Toyota |
| Model | Opirus | Sienna |
| Year Released | 2009 | 2003 |
| Body Type | Sedan | Minivan |
| Engine Position | Front | Front |
| Engine Size | 3497 cc | 2997 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 200 HP | 173 HP |
| Engine RPM | 5500 RPM | 5400 RPM |
| Torque | 298 Nm | 294 Nm |
| Torque RPM | 3500 RPM | 4300 RPM |
| Engine Bore Size | 93.1 mm | 87.5 mm |
| Engine Stroke Size | 85.8 mm | 83 mm |
| Engine Compression Ratio | 10.0:1 | 10.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Front | Front |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Weight | 1897 kg | 1705 kg |
| Vehicle Length | 4990 mm | 4920 mm |
| Vehicle Width | 1860 mm | 1870 mm |
| Vehicle Height | 1490 mm | 1720 mm |
| Wheelbase Size | 2810 mm | 2910 mm |
