2007 Acura RDX vs. 2006 Kia Optima
To start off, 2007 Acura RDX is newer by 1 year(s). Which means there will be less support and parts availability for 2006 Kia Optima. In addition, the cost of maintenance, including insurance, on 2006 Kia Optima would be higher. At 2,360 cc (4 cylinders), 2006 Kia Optima is equipped with a bigger engine. In terms of performance, 2007 Acura RDX (240 HP @ 6000 RPM) has 102 more horse power than 2006 Kia Optima. (138 HP @ 5500 RPM). In normal driving conditions, 2007 Acura RDX should accelerate faster than 2006 Kia Optima.
Because 2007 Acura RDX is four wheel drive (4WD), it will have significant more traction and grip than 2006 Kia Optima. In wet, icy, snow, or gravel driving conditions, 2007 Acura RDX 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 Acura RDX (353 Nm @ 4500 RPM) has 154 more torque (in Nm) than 2006 Kia Optima. (199 Nm @ 3000 RPM). This means 2007 Acura RDX will have an easier job in driving up hills or pulling heavy equipment than 2006 Kia Optima.
Compare all specifications:
| 2007 Acura RDX | 2006 Kia Optima | |
| Make | Acura | Kia |
| Model | RDX | Optima |
| Year Released | 2007 | 2006 |
| Body Type | SUV | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2299 cc | 2360 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 240 HP | 138 HP |
| Engine RPM | 6000 RPM | 5500 RPM |
| Torque | 353 Nm | 199 Nm |
| Torque RPM | 4500 RPM | 3000 RPM |
| Engine Bore Size | 86.4 mm | 86.6 mm |
| Engine Stroke Size | 99.1 mm | 100 mm |
| Engine Compression Ratio | 8.8:1 | 10.0:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | 4WD | Front |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Length | 4600 mm | 4730 mm |
| Vehicle Width | 1880 mm | 1820 mm |
| Vehicle Height | 1660 mm | 1420 mm |
| Wheelbase Size | 2660 mm | 2710 mm |
