2003 Kia Opirus vs. 2011 Infiniti FX
To start off, 2011 Infiniti FX is newer by 8 year(s). Which means there will be less support and parts availability for 2003 Kia Opirus. In addition, the cost of maintenance, including insurance, on 2003 Kia Opirus would be higher. At 3,696 cc (6 cylinders), 2011 Infiniti FX is equipped with a bigger engine. In terms of performance, 2011 Infiniti FX (316 HP @ 7000 RPM) has 120 more horse power than 2003 Kia Opirus. (196 HP @ 5500 RPM) In normal driving conditions, 2011 Infiniti FX should accelerate faster than 2003 Kia Opirus.
Because 2011 Infiniti FX is all wheel drive (AWD), it will have significant more traction and grip than 2003 Kia Opirus. In wet, icy, snow, or gravel driving conditions, 2011 Infiniti FX 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, 2011 Infiniti FX (360 Nm @ 5200 RPM) has 65 more torque (in Nm) than 2003 Kia Opirus. (295 Nm @ 3500 RPM). This means 2011 Infiniti FX will have an easier job in driving up hills or pulling heavy equipment than 2003 Kia Opirus.
Compare all specifications:
| 2003 Kia Opirus | 2011 Infiniti FX | |
| Make | Kia | Infiniti |
| Model | Opirus | FX |
| Year Released | 2003 | 2011 |
| Body Type | Sedan | Crossover |
| Engine Position | Front | Front |
| Engine Size | 3497 cc | 3696 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 196 HP | 316 HP |
| Engine RPM | 5500 RPM | 7000 RPM |
| Torque | 295 Nm | 360 Nm |
| Torque RPM | 3500 RPM | 5200 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | AWD |
| Transmission Type | Automatic | 7-speed shiftable automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Length | 4960 mm | 4865 mm |
| Vehicle Width | 1860 mm | 1925 mm |
| Vehicle Height | 1490 mm | 1680 mm |
| Wheelbase Size | 2810 mm | 2885 mm |
