2003 Daihatsu Sirion vs. 2013 Kia Optima
To start off, 2013 Kia Optima is newer by 10 year(s). Which means there will be less support and parts availability for 2003 Daihatsu Sirion. In addition, the cost of maintenance, including insurance, on 2003 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 125 more horse power than 2003 Daihatsu Sirion. (72 HP @ 5200 RPM) In normal driving conditions, 2013 Kia Optima should accelerate faster than 2003 Daihatsu Sirion. With that said, vehicle weight also plays an important factor in acceleration. 2013 Kia Optima weights approximately 602 kg more than 2003 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 151 more torque (in Nm) than 2003 Daihatsu Sirion. (101 Nm @ 3600 RPM). This means 2013 Kia Optima will have an easier job in driving up hills or pulling heavy equipment than 2003 Daihatsu Sirion.
Compare all specifications:
| 2003 Daihatsu Sirion | 2013 Kia Optima | |
| Make | Daihatsu | Kia |
| Model | Sirion | Optima |
| Year Released | 2003 | 2013 |
| Body Type | Hatchback | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1298 cc | 2400 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 72 HP | 197 HP |
| Engine RPM | 5200 RPM | 6300 RPM |
| Torque | 101 Nm | 252 Nm |
| Torque RPM | 3600 RPM | 4250 RPM |
| Fuel Type | Gasoline | 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 | 852 kg | 1454 kg |
| Vehicle Length | 3680 mm | 4845 mm |
| Vehicle Width | 1600 mm | 1830 mm |
| Vehicle Height | 1460 mm | 1455 mm |
| Wheelbase Size | 2350 mm | 2795 mm |
