2009 Daihatsu Sirion vs. 2005 Kia Optima
To start off, 2009 Daihatsu Sirion is newer by 4 year(s). Which means there will be less support and parts availability for 2005 Kia Optima. In addition, the cost of maintenance, including insurance, on 2005 Kia Optima would be higher. At 2,360 cc (4 cylinders), 2005 Kia Optima is equipped with a bigger engine. In terms of performance, 2005 Kia Optima (138 HP @ 4000 RPM) has 36 more horse power than 2009 Daihatsu Sirion. (102 HP @ 6000 RPM) In normal driving conditions, 2005 Kia Optima should accelerate faster than 2009 Daihatsu Sirion. With that said, vehicle weight also plays an important factor in acceleration. 2005 Kia Optima weights approximately 592 kg more than 2009 Daihatsu Sirion. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 Daihatsu Sirion is four wheel drive (4WD), it will have significant more traction and grip than 2005 Kia Optima. In wet, icy, snow, or gravel driving conditions, 2009 Daihatsu Sirion will offer significantly more control. 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 Optima (199 Nm) has 67 more torque (in Nm) than 2009 Daihatsu Sirion. (132 Nm). This means 2005 Kia Optima will have an easier job in driving up hills or pulling heavy equipment than 2009 Daihatsu Sirion.
Compare all specifications:
| 2009 Daihatsu Sirion | 2005 Kia Optima | |
| Make | Daihatsu | Kia |
| Model | Sirion | Optima |
| Year Released | 2009 | 2005 |
| Body Type | Hatchback | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1495 cc | 2360 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 102 HP | 138 HP |
| Engine RPM | 6000 RPM | 4000 RPM |
| Torque | 132 Nm | 199 Nm |
| Engine Bore Size | 72 mm | 87.1 mm |
| Engine Stroke Size | 91.8 mm | 100 mm |
| Engine Compression Ratio | 10.0:1 | 10.0:1 |
| Drive Type | 4WD | Front |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 905 kg | 1497 kg |
| Vehicle Length | 3640 mm | 4730 mm |
| Vehicle Width | 1670 mm | 1820 mm |
| Vehicle Height | 1560 mm | 1420 mm |
| Wheelbase Size | 2440 mm | 2620 mm |
| Fuel Consumption Overall | 6.2 L/100km | 9.4 L/100km |
| Fuel Tank Capacity | 40 L | 65 L |
