2004 Kia Optima vs. 2010 Lexus IS
To start off, 2010 Lexus IS is newer by 6 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 2,671 cc (6 cylinders), 2004 Kia Optima is equipped with a bigger engine. In terms of performance, 2010 Lexus IS (204 HP @ 6400 RPM) has 34 more horse power than 2004 Kia Optima. (170 HP @ 4000 RPM) In normal driving conditions, 2010 Lexus IS should accelerate faster than 2004 Kia Optima. With that said, vehicle weight also plays an important factor in acceleration. 2010 Lexus IS weights approximately 80 kg more than 2004 Kia Optima. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2010 Lexus IS is all wheel drive (AWD), it will have significant more traction and grip than 2004 Kia Optima. In wet, icy, snow, or gravel driving conditions, 2010 Lexus IS 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, 2010 Lexus IS (251 Nm) has 6 more torque (in Nm) than 2004 Kia Optima. (245 Nm). This means 2010 Lexus IS will have an easier job in driving up hills or pulling heavy equipment than 2004 Kia Optima.
Compare all specifications:
| 2004 Kia Optima | 2010 Lexus IS | |
| Make | Kia | Lexus |
| Model | Optima | IS |
| Year Released | 2004 | 2010 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2671 cc | 2500 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 170 HP | 204 HP |
| Engine RPM | 4000 RPM | 6400 RPM |
| Torque | 245 Nm | 251 Nm |
| Drive Type | Front | AWD |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1487 kg | 1567 kg |
| Vehicle Length | 4730 mm | 4585 mm |
| Vehicle Width | 1820 mm | 1801 mm |
| Vehicle Height | 1420 mm | 1440 mm |
| Wheelbase Size | 2720 mm | 2731 mm |
| Fuel Consumption Highway | 8.7 L/100km | 8.4 L/100km |
| Fuel Consumption City | 11.8 L/100km | 12.4 L/100km |
| Fuel Tank Capacity | 65 L | 65 L |
