2002 Infiniti QX4 3.5L VQ35DE from North America


It is an amazing automobile and a true all-rounder


One of the O2 sensors has been replaced.

The tip of the exhaust (coming off the resonator) fell off (rust issues; my state uses salt on the roads).

Both front sway bar end links wore out and were replaced.

Sensor for the intelligent cruise control failed ($3000 replacement; I'll just wait until I find one in the junk yard), and the ABS mysteriously doesn't work... left it at the Infiniti dealer where they worked on it for 3 days and they could not figure it out (real world test agreed that the ABS was broken, however all the components tested as working fine...???), and some buttons fell off of the climate control/GPS module.

I have repaired all of these except for the ICC and ABS, which I have learned to live without.

General Comments:

First of all, if you own one of these you need to know that the 1997-2003 Infiniti QX4 and 1996-2004 Nissan Pathfinder are nearly identical (both being designated as the R50 generation), which is extremely helpful when looking for parts or information on the internet. I highly suggest that you check out nissanpathfinders.net and look under the R50 section. That is a forum populated with great people from all over the world (United States, Canada, Australia, Russia, etc.) who know their stuff and want to help you enjoy your Japanese truck, however you choose to do so (lifted, stock, towing, etc.).

This truck is my first automobile, so you know it hasn't always been driven gently. Although mine is a Michigan automobile, it has held up against rust very well and only has minor rust spots, most of which just being surface rust on the underside except for one spot by the rear driver's side door/fender. I have done some modifications to mine, including a 2.5" suspension lift (using parts from sfcreation.com and ARB) and 32" all-terrain tires. With these modifications, it is extremely capable offroad, keeping up with Toyota trucks and Jeeps no problem! It has even towed a stuck XJ Cherokee out of the mud. I also tow a small 3x5 trailer with loads up to 2000lbs fairly frequently, and the truck pulls it extremely well. On the heavier loads, the ability to turn off overdrive is much appreciated.

This vehicle is fun to drive both on road and offroad, and fairly comfortable (especially for a truck with upgraded rear springs). It only has one downside, and that is the fact that it drinks premium gas at a rate of 14 MPG in the summer and 11 MPG in the winter. If you want to increase your MPG, manual hubs from companies like Warn or Mile Marker should get you an additional 1-2 MPG when in 2WD; just make sure to do your research on proper use first. That will surely be my next modification.

Overall, this truck is perfect for someone looking for a comfortable daily driver that they can also head into the woods with on the weekend.

Would you buy another car from this manufacturer? Yes

Review Date: 1st December, 2016

2003 Infiniti QX4 4WD 3.5L V6 from North America


A great SUV, if you do not anticipate having anyone in the passenger seat


Not a whole lot. But there are some common problems associated with this vehicle.

The catalytic converter near the exhaust cracks at the seams - needs to be welded.

SES light comes on - in my case it is either the fuel cap or the post cat O2 sensors (apparently this is a common problem, and replacing O2 sensors will help, but it will occur again unless the ECU is programmed).

The BOSE CD system will keep skipping CDs after a couple of years, and installing an aftermarket system is not that easy.

The IVIS - Infiniti vehicle immobilizer system is very sensitive to interference from other RFID sources (access cards etc.). It intermittently fails to recognize my key, and then starts working again.

Brake pedal travel is a common complaint with Pathfinders and QX4s; needs getting used to.

General Comments:

This is a very good looking sturdy SUV, and a great second hand buy. It is basically a luxury Nissan Pathfinder, with an auto (AWD) mode, although the AWD mode is not that effective.

Love the cargo space, and the 3.5L V6 seems responsive.

Compared to a Lexus or Acura, the suspension is stiffer and the cabin noise is higher.

My biggest regret with this vehicle (which I should have checked when I bought): The rear seating is very uncomfortable, there is hardly any headroom and the seats very high. If you plan on using a car seat, DO NOT BUY buy this SUV. The passenger door entry is narrow and the seats being high, moving a toddler in and out of the car seat is not a pleasant affair.

Would you buy another car from this manufacturer? Yes

Review Date: 1st March, 2012