2009 Kia Optima vs. 2009 Lexus RX
To start off, both 2009 Kia Optima and 2009 Lexus RX were released in the same year (2009). Therefore the support and the availability on parts for both vehicles should be relatively similar. At 3,456 cc (6 cylinders), 2009 Lexus RX is equipped with a bigger engine. In terms of performance, 2009 Lexus RX (272 HP @ 6200 RPM) has 78 more horse power than 2009 Kia Optima. (194 HP @ 6000 RPM) In normal driving conditions, 2009 Lexus RX should accelerate faster than 2009 Kia Optima. With that said, vehicle weight also plays an important factor in acceleration. 2009 Lexus RX weights approximately 391 kg more than 2009 Kia Optima. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 Lexus RX is four wheel drive (4WD), it will have significant more traction and grip than 2009 Kia Optima. In wet, icy, snow, or gravel driving conditions, 2009 Lexus RX 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, 2009 Lexus RX (342 Nm @ 4700 RPM) has 92 more torque (in Nm) than 2009 Kia Optima. (250 Nm @ 4500 RPM). This means 2009 Lexus RX will have an easier job in driving up hills or pulling heavy equipment than 2009 Kia Optima.
Compare all specifications:
| 2009 Kia Optima | 2009 Lexus RX | |
| Make | Kia | Lexus |
| Model | Optima | RX |
| Year Released | 2009 | 2009 |
| Body Type | Sedan | SUV |
| Engine Position | Front | Front |
| Engine Size | 2656 cc | 3456 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 194 HP | 272 HP |
| Engine RPM | 6000 RPM | 6200 RPM |
| Torque | 250 Nm | 342 Nm |
| Torque RPM | 4500 RPM | 4700 RPM |
| Engine Compression Ratio | 10.4:1 | 10.8:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1519 kg | 1910 kg |
| Vehicle Length | 4810 mm | 4750 mm |
| Vehicle Width | 1810 mm | 1850 mm |
| Vehicle Height | 1490 mm | 1680 mm |
| Wheelbase Size | 2730 mm | 2720 mm |
| Fuel Consumption Overall | 10.4 L/100km | 11.4 L/100km |
| Fuel Tank Capacity | 62 L | 72 L |
