2009 Infiniti EX vs. 2003 Infiniti QX4
To start off, 2009 Infiniti EX is newer by 6 year(s). Which means there will be less support and parts availability for 2003 Infiniti QX4. In addition, the cost of maintenance, including insurance, on 2003 Infiniti QX4 would be higher. At 3,696 cc (6 cylinders), 2009 Infiniti EX is equipped with a bigger engine. In terms of performance, 2009 Infiniti EX (317 HP @ 7000 RPM) has 79 more horse power than 2003 Infiniti QX4. (238 HP @ 6000 RPM). In normal driving conditions, 2009 Infiniti EX should accelerate faster than 2003 Infiniti QX4. With that said, vehicle weight also plays an important factor in acceleration. 2003 Infiniti QX4 weights approximately 241 kg more than 2009 Infiniti EX.
Both vehicles are four wheel drive (4WD) - it offers better handling, traction, and control in all driving conditions compared with front wheel drive or 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, 2009 Infiniti EX (360 Nm @ 5200 RPM) has 1 more torque (in Nm) than 2003 Infiniti QX4. (359 Nm @ 3200 RPM). This means 2009 Infiniti EX will have an easier job in driving up hills or pulling heavy equipment than 2003 Infiniti QX4.
Compare all specifications:
| 2009 Infiniti EX | 2003 Infiniti QX4 | |
| Make | Infiniti | Infiniti |
| Model | EX | QX4 |
| Year Released | 2009 | 2003 |
| Body Type | SUV | SUV |
| Engine Position | Front | Front |
| Engine Size | 3696 cc | 3498 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 317 HP | 238 HP |
| Engine RPM | 7000 RPM | 6000 RPM |
| Torque | 360 Nm | 359 Nm |
| Torque RPM | 5200 RPM | 3200 RPM |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | 4WD | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1719 kg | 1960 kg |
| Vehicle Length | 4640 mm | 4660 mm |
| Vehicle Width | 1810 mm | 1850 mm |
| Vehicle Height | 1600 mm | 1800 mm |
| Wheelbase Size | 2810 mm | 2710 mm |
