2006 Acura RSX vs. 2005 Kia Optima
To start off, 2006 Acura RSX is newer by 1 year(s). Which means there will be less support and parts availability for 2005 Kia Optima. In addition, the cost of maintenance, including insurance, on 2005 Kia Optima would be higher. At 2,360 cc (4 cylinders), 2005 Kia Optima is equipped with a bigger engine. In terms of performance, 2006 Acura RSX (155 HP @ 6500 RPM) has 17 more horse power than 2005 Kia Optima. (138 HP @ 3800 RPM). In normal driving conditions, 2006 Acura RSX should accelerate faster than 2005 Kia Optima. With that said, vehicle weight also plays an important factor in acceleration. 2005 Kia Optima weights approximately 214 kg more than 2006 Acura RSX.
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, 2005 Kia Optima (199 Nm) has 11 more torque (in Nm) than 2006 Acura RSX. (188 Nm). This means 2005 Kia Optima will have an easier job in driving up hills or pulling heavy equipment than 2006 Acura RSX.
Compare all specifications:
| 2006 Acura RSX | 2005 Kia Optima | |
| Make | Acura | Kia |
| Model | RSX | Optima |
| Year Released | 2006 | 2005 |
| Body Type | Coupe | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1999 cc | 2360 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 155 HP | 138 HP |
| Engine RPM | 6500 RPM | 3800 RPM |
| Torque | 188 Nm | 199 Nm |
| Engine Compression Ratio | 9.8:1 | 10.0:1 |
| Drive Type | Front | Front |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1274 kg | 1488 kg |
| Vehicle Length | 4380 mm | 4730 mm |
| Vehicle Width | 1730 mm | 1820 mm |
| Vehicle Height | 1400 mm | 1420 mm |
| Wheelbase Size | 2580 mm | 2710 mm |
| Fuel Consumption | 6.9 L/100km | 7.8 L/100km |
| Fuel Consumption City | 9.4 L/100km | 10.2 L/100km |
| Fuel Consumption Overall | 8.4 L/100km | 9.4 L/100km |
| Fuel Tank Capacity | 50 L | 65 L |
