How to decode a 2003 Infiniti QX4 VIN

Characters 1-3 of a 2003 Infiniti QX4 VIN

World Manufacturer Identifier (WMI) codes are a unique series of letters and numbers assigned to every vehicle manufacturer globally to identify the vehicle’s maker, characteristics, and country of origin. Specifically, the WMI for the 2003 Infiniti QX4 identifies it as a vehicle produced by Nissan Motor Company, Ltd., located in Chuo-Ku, Tokyo, Japan. This multipurpose passenger vehicle, characterized by its WMI starting with “JNR,” highlights its manufacturing origin from Japan. The designation of this vehicle underlines Nissan’s role in producing quality multipurpose vehicles designed for a variety of passenger needs. Understanding a vehicle’s WMI is essential for recognizing its foundational qualities, including the manufacturer’s identity and the vehicle type.

List of WMI Codes for a 2003 Infiniti QX4

WMI: JNR

Model Years Covered: 1997-2003
Example VIN: JNRDR09Y03W300249
Manufacturer Name: Nissan Motor Company, Ltd.
Vehicle Type: Multipurpose Passenger Vehicle (MPV)
City: Chuo-Ku
State or Province: Tokyo
Country: Japan

Characters 4-8 are the Vehicle Descriptor Section (VDS) of a 2003 Infiniti QX4 VIN

These characters correspond to components like:

Engine type
Transmission
Model or trim
Body style
Gross vehicle weight range

Below find the known vehicle descriptor codes for a 2003 Infiniti QX4:

Known VDS for a 2003 Infiniti QX4
DR09Y	DR09X

Auto manufacturers have some discretion to decide how they want to code this section, but its contents and decoded results are generally consistent.

Character 9 is the “check digit” in a 2003 Infiniti QX4 VIN.

Based on a formula developed by the US Department of Transportation, it helps reduce fraud by ensuring the validity of the VIN.

10th Character in the 2003 Infiniti QX4 VIN — Year Code

Year Code	Year
3	2003

11th Character in the 2003 Infiniti QX4 VIN — Plant Code(s)

Known 2003 Infiniti QX4 Assembly Factory VIN Code(s)

Plant Code	Plant City	Plant State	Plant Country	Plant Company Name	Example VIN
W	Miyawaka	Fukuoka	Japan	Kyushu Plant	JNRDR09Y03W300249

VIN Characters 12 - 17 of a 2003 Infiniti QX4

The final 6 characters in a 2003 Infiniti QX4’s 17-digit VIN are its serial number, which will be unique to every vehicle.

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How to find a 2003 Infiniti QX4’s VIN?

Locating the VIN number on your 2003 Infiniti QX4 is key for identification. Here’s how to find it:

Check the dashboard on the driver’s side of your Infiniti QX4. The VIN is often visible through the windshield on a small plate.
Inspect the door jamb on the driver’s side of your Infiniti QX4. You might find the VIN on a label or sticker where the door latches when closed.
Look at the engine block on your Infiniti QX4. The VIN might be stamped onto the engine itself.
Examine the front frame or the cross-bar under the hood of your Infiniti QX4. The VIN could be located on the chassis of the vehicle.
For comprehensive documentation, check the vehicle title or registration documents associated with your Infiniti QX4, as the VIN will be listed there.
Inspect the rear wheel well above the tire of your Infiniti QX4. Sometimes the VIN can be found in this area, etched into the car’s body.

What info can a 2003 Infiniti QX4 VIN reveal?

Model Year: The VIN can reveal the vehicles model year being the year 2003, providing insights into the age and potential market value of the vehicle.
Manufacturing Details: The 2003 QX4 model is assembled at the Kyushu Plant located in Miyawaka, Fukuoka, Japan, highlighting its international manufacturing origins.
Vehicle Specifications: The vehicle is a QX4 with a V-Shaped engine configuration, featuring a 3.5L engine displacement and six cylinders, which can have implications for its power and efficiency.
Body Class and Size: Classified as a Sport Utility Vehicle (SUV)/Multi-Purpose Vehicle (MPV), it has a 4-door configuration, suitable for versatile use and family needs.
Drive Type and Brake System: It operates with a 4x2 drive type and a hydraulic brake system, possibly providing insights into its handling and safety characteristics.
Fuel Type: The 2003 QX4 utilizes gasoline as its primary fuel source, which is crucial for understanding fuel consumption and environmental impact.
Gross Vehicle Weight Rating: Falls within Class 1D, with a range of 5,001 - 6,000 lb (2,268 - 2,722 kg), giving an idea of its size, capacity, and potential usage scenarios.

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Sample VIN Decode Report for a 2003 Infiniti QX4

Vehicle Spec	Value
Body Class	Sport Utility Vehicle (SUV)/Multi-Purpose Vehicle (MPV)
Brake System Type	Hydraulic
Displacement (CC)	3500.0
Displacement (CI)	213.58310433156
Displacement (L)	3.5
Doors	4
Drive Type	4x2
Engine Configuration	V-Shaped
Engine Number of Cylinders	6
Fuel Type - Primary	Gasoline
Gross Vehicle Weight Rating From	Class 1D: 5,001 - 6,000 lb (2,268 - 2,722 kg)
Model	QX4
Model Year	2003
Plant City	Miyawaka
Plant Company Name	Kyushu plant
Plant Country	Japan
Plant State	Fukuoka
Series2	Wagon Body type
Vehicle Descriptor	JNRDR09X*3W
Vehicle Type	Multipurpose Passenger Vehicle
Sample_VIN	JNRDR09X03W251898