2009 Kia Optima vs. 2003 Scion xB
To start off, 2009 Kia Optima is newer by 6 year(s). Which means there will be less support and parts availability for 2003 Scion xB. In addition, the cost of maintenance, including insurance, on 2003 Scion xB would be higher. At 2,656 cc (6 cylinders), 2009 Kia Optima is equipped with a bigger engine. In terms of performance, 2009 Kia Optima (194 HP @ 6000 RPM) has 88 more horse power than 2003 Scion xB. (106 HP @ 6000 RPM). In normal driving conditions, 2009 Kia Optima should accelerate faster than 2003 Scion xB. With that said, vehicle weight also plays an important factor in acceleration. 2009 Kia Optima weights approximately 409 kg more than 2003 Scion xB. 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 Optima (250 Nm @ 4500 RPM) has 108 more torque (in Nm) than 2003 Scion xB. (142 Nm @ 4200 RPM). This means 2009 Kia Optima will have an easier job in driving up hills or pulling heavy equipment than 2003 Scion xB.
Compare all specifications:
| 2009 Kia Optima | 2003 Scion xB | |
| Make | Kia | Scion |
| Model | Optima | xB |
| Year Released | 2009 | 2003 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 2656 cc | 1489 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 194 HP | 106 HP |
| Engine RPM | 6000 RPM | 6000 RPM |
| Torque | 250 Nm | 142 Nm |
| Torque RPM | 4500 RPM | 4200 RPM |
| Engine Bore Size | 86.7 mm | 76 mm |
| Engine Stroke Size | 75 mm | 84 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | Front |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1519 kg | 1110 kg |
| Vehicle Length | 4810 mm | 3950 mm |
| Vehicle Width | 1810 mm | 1700 mm |
| Vehicle Height | 1490 mm | 1650 mm |
| Wheelbase Size | 2730 mm | 2510 mm |
| Fuel Tank Capacity | 62 L | 45 L |
