2005 Kia Opirus vs. 2004 Toyota Sienna
To start off, 2005 Kia Opirus is newer by 1 year(s). Which means there will be less support and parts availability for 2004 Toyota Sienna. In addition, the cost of maintenance, including insurance, on 2004 Toyota Sienna would be higher. At 3,497 cc (6 cylinders), 2005 Kia Opirus is equipped with a bigger engine. In terms of performance, 2005 Kia Opirus (196 HP @ 5500 RPM) has 2 more horse power than 2004 Toyota Sienna. (194 HP @ 5600 RPM). In normal driving conditions, 2005 Kia Opirus should accelerate faster than 2004 Toyota Sienna. With that said, vehicle weight also plays an important factor in acceleration. 2005 Kia Opirus weights approximately 55 kg more than 2004 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, 2005 Kia Opirus (294 Nm @ 3500 RPM) has 21 more torque (in Nm) than 2004 Toyota Sienna. (273 Nm @ 4300 RPM). This means 2005 Kia Opirus will have an easier job in driving up hills or pulling heavy equipment than 2004 Toyota Sienna.
Compare all specifications:
| 2005 Kia Opirus | 2004 Toyota Sienna | |
| Make | Kia | Toyota |
| Model | Opirus | Sienna |
| Year Released | 2005 | 2004 |
| Body Type | Sedan | Minivan |
| Engine Position | Front | Front |
| Engine Size | 3497 cc | 2996 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 196 HP | 194 HP |
| Engine RPM | 5500 RPM | 5600 RPM |
| Torque | 294 Nm | 273 Nm |
| Torque RPM | 3500 RPM | 4300 RPM |
| Engine Bore Size | 93 mm | 87.5 mm |
| Engine Stroke Size | 85.8 mm | 83 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | Front |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Weight | 1760 kg | 1705 kg |
| Vehicle Length | 4960 mm | 4920 mm |
| Vehicle Width | 1860 mm | 1870 mm |
| Vehicle Height | 1490 mm | 1720 mm |
| Wheelbase Size | 2810 mm | 2910 mm |
