2004 Kia Optima vs. 2007 Toyota Sienna
To start off, 2007 Toyota Sienna is newer by 3 year(s). Which means there will be less support and parts availability for 2004 Kia Optima. In addition, the cost of maintenance, including insurance, on 2004 Kia Optima would be higher. At 3,454 cc (6 cylinders), 2007 Toyota Sienna is equipped with a bigger engine. In terms of performance, 2007 Toyota Sienna (266 HP @ 6200 RPM) has 96 more horse power than 2004 Kia Optima. (170 HP @ 4000 RPM) In normal driving conditions, 2007 Toyota Sienna should accelerate faster than 2004 Kia Optima.
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, 2007 Toyota Sienna (332 Nm) has 87 more torque (in Nm) than 2004 Kia Optima. (245 Nm). This means 2007 Toyota Sienna will have an easier job in driving up hills or pulling heavy equipment than 2004 Kia Optima.
Compare all specifications:
| 2004 Kia Optima | 2007 Toyota Sienna | |
| Make | Kia | Toyota |
| Model | Optima | Sienna |
| Year Released | 2004 | 2007 |
| Body Type | Sedan | Minivan |
| Engine Position | Front | Front |
| Engine Size | 2671 cc | 3454 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 170 HP | 266 HP |
| Engine RPM | 4000 RPM | 6200 RPM |
| Torque | 245 Nm | 332 Nm |
| Engine Compression Ratio | 10.0:1 | 10.5:1 |
| Drive Type | Front | Front |
| Number of Seats | 5 seats | 7 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Length | 4730 mm | 5110 mm |
| Vehicle Width | 1820 mm | 1970 mm |
| Vehicle Height | 1420 mm | 1760 mm |
| Wheelbase Size | 2720 mm | 3040 mm |
| Fuel Consumption | 8.7 L/100km | 9.1 L/100km |
| Fuel Consumption City | 11.8 L/100km | 12.4 L/100km |
| Fuel Consumption Overall | 10.2 L/100km | 10.7 L/100km |
| Fuel Tank Capacity | 65 L | 76 L |
