2007 Daihatsu Sirion vs. 2013 Kia Optima
To start off, 2013 Kia Optima is newer by 6 year(s). Which means there will be less support and parts availability for 2007 Daihatsu Sirion. In addition, the cost of maintenance, including insurance, on 2007 Daihatsu Sirion would be higher. At 2,400 cc (4 cylinders), 2013 Kia Optima is equipped with a bigger engine. In terms of performance, 2013 Kia Optima (197 HP @ 6300 RPM) has 128 more horse power than 2007 Daihatsu Sirion. (69 HP @ 6000 RPM) In normal driving conditions, 2013 Kia Optima should accelerate faster than 2007 Daihatsu Sirion. With that said, vehicle weight also plays an important factor in acceleration. 2013 Kia Optima weights approximately 560 kg more than 2007 Daihatsu Sirion. 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, 2013 Kia Optima (252 Nm @ 4250 RPM) has 158 more torque (in Nm) than 2007 Daihatsu Sirion. (94 Nm @ 3600 RPM). This means 2013 Kia Optima will have an easier job in driving up hills or pulling heavy equipment than 2007 Daihatsu Sirion.
Compare all specifications:
| 2007 Daihatsu Sirion | 2013 Kia Optima | |
| Make | Daihatsu | Kia |
| Model | Sirion | Optima |
| Year Released | 2007 | 2013 |
| Body Type | Hatchback | Sedan |
| Engine Position | Front | Front |
| Engine Size | 998 cc | 2400 cc |
| Engine Cylinders | 3 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 69 HP | 197 HP |
| Engine RPM | 6000 RPM | 6300 RPM |
| Torque | 94 Nm | 252 Nm |
| Torque RPM | 3600 RPM | 4250 RPM |
| Engine Bore Size | 71 mm | 88 mm |
| Engine Stroke Size | 84 mm | 97 mm |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Front | Front |
| Transmission Type | Manual | 6-speed manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 894 kg | 1454 kg |
| Vehicle Length | 3610 mm | 4845 mm |
| Vehicle Width | 1670 mm | 1830 mm |
| Vehicle Height | 1560 mm | 1455 mm |
| Wheelbase Size | 2440 mm | 2795 mm |
| Fuel Tank Capacity | 40 L | 70 L |
