2009 Kia Optima vs. 2007 Lexus RX
To start off, 2009 Kia Optima is newer by 2 year(s). Which means there will be less support and parts availability for 2007 Lexus RX. In addition, the cost of maintenance, including insurance, on 2007 Lexus RX would be higher. At 3,455 cc (6 cylinders), 2007 Lexus RX is equipped with a bigger engine. In terms of performance, 2007 Lexus RX (272 HP @ 6200 RPM) has 97 more horse power than 2009 Kia Optima. (175 HP @ 6000 RPM) In normal driving conditions, 2007 Lexus RX should accelerate faster than 2009 Kia Optima.
Because 2007 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, 2007 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, 2007 Lexus RX (342 Nm @ 4700 RPM) has 113 more torque (in Nm) than 2009 Kia Optima. (229 Nm @ 4000 RPM). This means 2007 Lexus RX will have an easier job in driving up hills or pulling heavy equipment than 2009 Kia Optima. 2007 Lexus RX has automatic transmission and 2009 Kia Optima has manual transmission. 2009 Kia Optima will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 Lexus RX will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 Kia Optima | 2007 Lexus RX | |
| Make | Kia | Lexus |
| Model | Optima | RX |
| Year Released | 2009 | 2007 |
| Body Type | Sedan | SUV |
| Engine Position | Front | Front |
| Engine Size | 2359 cc | 3455 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 175 HP | 272 HP |
| Engine RPM | 6000 RPM | 6200 RPM |
| Torque | 229 Nm | 342 Nm |
| Torque RPM | 4000 RPM | 4700 RPM |
| Engine Compression Ratio | 10.1:1 | 10.8:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| 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 | 9.6 L/100km | 11.2 L/100km |
| Fuel Tank Capacity | 62 L | 72 L |
