Model year guide

2004 Infiniti M45

Recalls, most-reported problems, crash-test ratings, fuel economy and what a 2004 Infiniti M45 is worth — from official NHTSA and EPA data. 3 on record.

2004 Infiniti M45 — representative photo
Representative photo · via Wikimedia Commons

2004 Infiniti M45 at a glance

Safety recalls2
Owner complaints43
Combined18 mpg

Included: that car's specs and build sheet, model-year recall campaigns and a fair price.

2004 Infiniti M45 recalls 2

Fuel System, Gasoline NHTSA Campaign #12V088000 · 06/03/2012

NISSAN IS RECALLING CERTAIN MODEL YEAR 2003-2004 INFINITI M45 VEHICLES MANUFACTURED FROM MARCH 7, 2002, THROUGH JUNE 3, 2004. DUE TO A CIRCUIT BOARD FAILURE, THE FUEL GAUGE MAY READ A FUEL LEVEL HIGHER THAN ACTUALLY EXISTS. AS A RESULT, THE VEHICLE MAY RUN OUT OF GAS WITHOUT NOTICE.

Fix: NISSAN WILL NOTIFY OWNERS, AND DEALERS WILL MODIFY THE CIRCUIT BOARD FREE OF CHARGE. THE SAFETY RECALL BEGAN ON APRIL 27, 2012. OWNERS MAY CONTACT NISSAN CUSTOMER SERVICE AT 1-800-647-7261.

Exterior Lighting:brake Lights:switch NHTSA Campaign #04V497000 · manufacturer #R0407 · 13/10/2004

ON CERTAIN PASSENGER VEHICLES, THE BRAKE LAMP SWITCH MAY MALFUNCTION.

Fix: DEALERS WILL REPLACE THE BRAKE LAMP SWITCH. THE RECALL BEGAN ON OCTOBER 25, 2004. OWNERS SHOULD CONTACT INFINITI AT 1-800-662-6200.

Source: U.S. NHTSA, checked 4 Nov 2026. A campaign covers the model year; to see whether a particular car still needs the repair, check its VIN on NHTSA.gov or ask a franchised dealer.

2004 Infiniti M45 common problems

The most-reported problem areas across all 43 owner complaints filed with NHTSA — and what to check before you buy.

Fuel System
Sniff for fuel odor, check for leaks, hard starts or stalling, and confirm the fuel gauge reads correctly.
Gasoline
Have a trusted mechanic inspect this system as part of a pre-purchase inspection.
Engine
Listen for knocks or ticking, check for leaks and blue/white exhaust smoke, and make sure it doesn't overheat. No check-engine light should be on.
Other
Have a trusted mechanic inspect this system as part of a pre-purchase inspection.
Electrical System
Test every electrical feature: windows, locks, infotainment, charging and all lights. Watch for flickering, dead accessories or warning lights.
Seats
Have a trusted mechanic inspect this system as part of a pre-purchase inspection.

2004 Infiniti M45 MPG & running costs

Combined18 mpg
City16 mpg
Highway22 mpg
Est. annual fuel cost$4,550
EPA size classCompact Cars
TransmissionAutomatic (S5)
Passenger volume91 cu ft
Cargo volume13 cu ft
5-yr fuel cost vs average new car$10,750 more

Source: U.S. EPA / DOE fueleconomy.gov.

Estimated 5-year cost to own

A rough guide to what running a 2004 Infiniti M45 costs over five years and 75,000 miles.

Fuel (5 yrs)$22,750
Fuel only$22,750
Per mile$0.30

How this is estimated: fuel is the U.S. EPA annual cost at 15,000 miles a year. There aren't enough comparable listings to estimate depreciation for this model, so it is left out. Not included: insurance, maintenance, repairs, taxes, registration and finance costs. Treat it as a comparison guide, not a quote.

Dimensions & weight

Length
197.2 in
Width
70.1 in
Height
57.5 in
Wheelbase
110.2 in
Curb weight
3,882 lb
Front track
59.4 in
Rear track
59.4 in

Manufacturer-reported figures for the 2004 Infiniti M45. Source: Transport Canada vehicle specifications via NHTSA.

Investigations & service bulletins

NHTSA defect investigations 3

Fuel level gauge system failure Closed

In a March 5, 2012 letter to NHTSA, Nissan North America, Inc. (Nissan) submitted a Defect Information Report identifying a defect in the combination meter circuit board in approximately 8,120 model year 2003 through 2004 Infiniti M45 vehicles manufactured from March 7, 2002 through June 3, 2004 (Recall No. 12V-088). According to Nissan, heat generated by several components of the circuit board may cause solder crack…

NHTSA #PE11038 · Fuel System, Other · opened Dec 2011 · closed Mar 2012

Non-deployment of Side Thorax Air Bags Closed

The subject vehicles are equipped with seat-mounted, side thorax air bags for the driver and front passenger. This investigation revealed that faulty side air bag module electrical connectors located under the driver and front passenger seats can cause an interruption in the electrical circuit that will drop the input voltage below the specified range. As a result, the air bag warning lamp illuminates on the instrume…

NHTSA #EA09005 · Air Bags · opened Apr 2009 · closed Apr 2012

SIDE AIR BAG NON-DEPLOYMENT Closed

THE SUBJECT VEHICLES ARE EQUIPPED WITH SEAT-MOUNTED, SIDE TORSO AIR BAGS FOR THE DRIVER AND FRONT PASSENGER. THIS INVESTIGATION HAS REVEALED THAT FAULTY SIDE AIR BAG MODULE CONNECTORS LOCATED UNDER THE FRONT SEATS CAN CAUSE AN INTERRUPTION IN THE ELECTRICAL CURRENT THAT WILL DROP THE INPUT VOLTAGE BELOW THE SPECIFIED RANGE. AS A RESULT, THE AIR BAG WARNING LAMP ILLUMINATES AND THE AFFECTED SIDE AIR BAG IS DEACTIVATED…

NHTSA #PE08067 · Air Bags · opened Dec 2008 · closed Apr 2009

An investigation means NHTSA is examining a possible defect — it is not a recall, and many close without one.

Manufacturer service bulletins 55

Technical notes the manufacturer sent to dealers about known issues and fixes. Useful to mention to a mechanic — they are not recalls and repairs may not be covered. Showing the 10 most recent of 55.

CERTIFICATION LABEL AND VIN PLATE REPLACEMENT SERVICE INFORMATION Because of collision damage or other vehicle repair, a replacement “Certification Label” or “VIN Plate/Label” may be needed. HINT: Certification Label = FMVSS (Federal Motor Vehicle Safety Stand…

Bulletin ITB09-063C · Structure · Apr 2026

INTELLIGENT KEY NOT DETECTED / ENGINE WILL NOT START This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.

Bulletin ITB13-052E · Electrical System · May 2024

WINDOW GLASS WARRANTY INFORMATION This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.

Bulletin ITB17-009H · Visibility/wiper · Apr 2024

REMOVING FOREIGN MATERIAL FROM THE WINDOW GLASS This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.

Bulletin ITB13-007I · Visibility/wiper · Apr 2024

WINDSHIELD CRACKING This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.

Bulletin ITB09-039K · Visibility/wiper · Apr 2024

REMOVING FOREIGN MATERIAL FROM THE WINDOW GLASS This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.

Bulletin ITB13-007H · Structure, Visibility · Feb 2023

WINDSHIELD CRACKING This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.

Bulletin ITB09-039J · Visibility, Structure · Feb 2023

WHEEL BEARING COLLISION DAMAGE This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.

Bulletin ITB10-067C · Wheels · Feb 2023

INFINITI; FRONT SONAR PARKING SENSOR SERVICE INFORMATION This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.

Bulletin ITB16-006A · Electrical System · Mar 2021

NAVIGATION MAP DATA UPDATE MATRIX This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.

Bulletin ITB11-003F · Electrical System · Mar 2021

Source: NHTSA Office of Defects Investigation, listed for the M45. Model-year data, not specific to one car.

Canadian recalls 1

Transport Canada recall campaigns for the 2004 Infiniti M45. Relevant if the car was first sold in, or imported from, Canada.

Fuel System

Certain vehicles may experience fuel gauge errors. The gauge may read higher than the actual level in the gas tank, or always indicate full. As such, the vehicle could run out of gas without notice. Engine stalling would result in lost vehicle propulsion which, in conjunction with traffic and road condition, and the driver's reactions, could increase the risk of a crash causing…

Transport Canada #2012087 · Mar 2012

Source: Transport Canada Motor Vehicle Safety Recalls Database.

About the Infiniti M45

The Infiniti M is a line of mid-size luxury (executive) cars from the Infiniti luxury division of Nissan. From 2013 on it has been marketed as the Infiniti Q70, reflecting the company's later naming formula.

From Wikipedia, licensed CC BY-SA 4.0. Describes the model line in general, not this model year specifically.

2004 Infiniti M45 trims & engines on record

Trims
Base
Engines
4.5L 8-cyl

2004 Infiniti M45 vehicles on record

Other Infiniti M45 model years

2004 Infiniti M45 — frequently asked questions

Does the 2004 Infiniti M45 have any safety recalls?

NHTSA lists 2 recall campaigns for the 2004 Infiniti M45. Whether an individual car still needs a recall repair depends on its VIN — check it on NHTSA.gov or ask a franchised dealer. Recall repairs are done at no charge.

What are the most common problems with the 2004 Infiniti M45?

Across all 43 owner complaints filed with NHTSA, the most-reported problem areas are fuel system, gasoline, engine.

What gas mileage does the 2004 Infiniti M45 get?

The 2004 Infiniti M45 has a U.S. EPA estimate of 18 mpg combined (16 city / 22 highway).

Sources: NHTSA (recalls, complaints, crash tests), U.S. EPA (fuel economy). Vehicle data only — CarLogs never shows owner information.