Model year guide

1997 Infiniti q45

Recalls, most-reported problems, crash-test ratings, fuel economy and what a 1997 Infiniti q45 is worth — from official NHTSA and EPA data. 3 on record.

1997 Infiniti q45 — representative photo
Representative photo · via Wikimedia Commons

1997 Infiniti q45 at a glance

Safety recalls3
Owner complaints12
Combined18 mpg

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

1997 Infiniti q45 recalls 3

Electrical System:alternator/generator/regulator NHTSA Campaign #02V171000 · 24/06/2002

ON CERTAIN PASSENGER VEHICLES, ONE OF THE DIODES USED IN THE ALTERNATOR MAY HAVE BEEN DAMAGED WHEN BUILT. THIS CAN EVENTUALLY RESULT IN FAILURE OF THE DIODE AND AN ELECTRICAL SHORT WHICH COULD MELT THE PLASTIC HOUSING.

Fix: DEALERS WILL REPLACE THE ALTERNATOR. OWNER NOTIFICATION BEGAN JULY 29, 2002. OWNERS WHO TAKE THEIR VEHICLES TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND DO NOT RECEIVE THE FREE REMEDY WITHIN A REASONABLE TIME SHOULD CONTACT NISSAN AT 1-800-647-7261 OR INFINITI AT 1-800-662-6200.

Electrical System:alternator/generator/regulator NHTSA Campaign #99V129000 · 20/05/1999

VEHICLE DESCRIPTION: PASSENGER VEHICLES. ONE OF THE DIODES USED IN THE ALTERNATOR MAY HAVE BEEN DAMAGED WHEN BUILT. THIS CAN EVENTUALLY RESULT IN FAILURE OF THE DIODE AND AN ELECTRICAL SHORT WHICH COULD MELT THE PLASTIC HOUSING.

Fix: DEALERS WILL REPLACE THE ALTERNATOR.

Power Train:automatic Transmission NHTSA Campaign #98V325000 · 14/12/1998

VEHICLE DESRIPTION: PASSENGER VEHICLES. THE IGNITION KEY CAN BE REMOVED WHEN THE ENGINE IS TURNED OFF WITHOUT PLACING THE TRANSMISSION SHIFT LEVER IN THE "PARK" POSITION. THIS DOES NOT COMPLY WITH THE REQUIREMENTS OF FMVSS NO. 102, "TRANSMISSION SHIFT LEVER SEQUENCE, STARTER INTERLOCK, AND TRANSMISSION BRAKING EFFECT."

Fix: DEALERS WILL REPLACE THE SHIFT LOCK CONTROL UNIT.

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.

1997 Infiniti q45 common problems

The most-reported problem areas across all 12 owner complaints filed with NHTSA — and what to check before you buy.

Electrical System
Test every electrical feature: windows, locks, infotainment, charging and all lights. Watch for flickering, dead accessories or warning lights.
Air Bags
Confirm the airbag light turns on then off at startup — if it stays lit there's a fault (costly, and a safety risk). Check for signs of prior deployment.
Suspension
Listen for clunks over bumps, check the car sits level, and look for uneven tire wear and worn shocks or struts.
Service Brakes
Brakes should feel firm and quiet — no grinding, pulsing or pulling. Check for an ABS light and uneven pad/rotor wear.
Engine And Engine Cooling
Check coolant level and color, look for leaks, and confirm the engine reaches normal temperature without overheating.
Vehicle Speed Control
Test cruise control and throttle response, and watch for any hesitation or unintended acceleration.

1997 Infiniti q45 MPG & running costs

Combined18 mpg
City16 mpg
Highway22 mpg
Est. annual fuel cost$4,550
EPA size classMidsize Cars
TransmissionAutomatic 4-spd
Passenger volume97 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 1997 Infiniti q45 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
199.2 in
Width
71.7 in
Height
57.1 in
Wheelbase
111.4 in
Curb weight
3,882 lb
Front track
60.6 in
Rear track
60.6 in

Manufacturer-reported figures for the 1997 Infiniti q45. Source: Transport Canada vehicle specifications via NHTSA.

Investigations & service bulletins

Manufacturer service bulletins 68

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 68.

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

VOLUNTARY SERVICE CAMPAIGN 1997 Q45 INTAKE COLLECTOR GASKET LEAK Service Campaign ID # P7136 is no longer active.  Repair orders opened after this bulletin’s published date are no longer eligible for reimbursement under Campaign ID # P7136.  Discard al…

Bulletin ITB97-038a · Fuel System, Gasoline, Engine, Equipment · Jul 2020

EXTERIOR CLEANING INFORMATION SERVICE INFORMATION When cleaning the exterior of an Infiniti vehicle, damage may occur when using a cleaner with too high of an alkaline concentration. - Always refer to the Appearance and care section of the related owner?s manu…

Bulletin ITB19-008 · Equipment · Apr 2019

PLASTIC INTERIOR TRIM PROTECTIVE COVERING REMOVAL SERVICE INFORMATION Vehicles are delivered with plastic interior trim protective covering on the front and rear seats, front and rear door panel finishers, steering wheel, and sun visors (see examples on page 2…

Bulletin ITB18-037 · Structure, Equipment · Oct 2018

TRANSMISSION & ENGINE AUTOMATED DATA COLLECTION AND DIAGNOSTIC REPORTING SERVICE INFORMATION To support proper diagnosis and to promote Fixed-Right-First-Time ? Infiniti may review CONSULT-III plus (CIII plus) data relating to vehicle operation and function to…

Bulletin ITB18-034 · Power Train · Oct 2018

Infiniti USA Electronic Field Communication Subject: Retailed Vehicle Open Campaign Report Lists Updated The lists for each retailer?s Retailed Vehicle Open Campaign Report has been updated today in DBS. We made our best effort to reassign vehicles to retailer…

Bulletin Infiniti USA Ret · Equipment · Oct 2018

Infiniti USA Electronic Field Communication Subject: Takata Completion Objectives for Q3 INFINITI is continuing to ask its retailers to urgently help increase customer participation in the Takata recalls to help it achieve 100% customer recall participation fo…

Bulletin Infiniti USA Tak · Air Bags · Oct 2018

Source: NHTSA Office of Defects Investigation, listed for the Q45. Model-year data, not specific to one car.

Canadian recalls 2

Transport Canada recall campaigns for the 1997 Infiniti q45. Relevant if the car was first sold in, or imported from, Canada.

Powertrain

Duplicate recall, see original 1998174. Certain vehicles do not comply with the requirements of CMVSS 114 - Locking System. There is the possibility that the ignition key can be removed at times when the engine is turned off without placing the transmission shift lever in the "Park" position. If this were to occur, and the driver failed to move the shift lever to "Park" after r…

Transport Canada #1999030 · Mar 1999

Other

THE SHIFT LOCK CONTROL UNIT MAY NOT SEND A LOCK SIGNAL TO THE KEY INTERLOCK MECHANISM SOLENOID. THIS WOULD MAKE IT POSSIBLE TO REMOVE THE IGNITION KEY AFTER TURNING THE ENGINE OFF AND NOT PLACING THE SHIFT LEVER IN THE "PARK" POSITION. IF THIS WERE TO OCCUR AND THE DRIVER FAILED TO MOVE THE SHIFT LEVER TO THE "PARK" POSITION OR TO ENGAGE THE PARKING BRAKE BEFORE EXITING THE VEH…

Transport Canada #1998174 · Sep 1998

Source: Transport Canada Motor Vehicle Safety Recalls Database.

About the Infiniti q45

The Infiniti Q45 is a full-size luxury sedan that was marketed by the Infiniti division of Nissan from the 1990 to 2006 model years. The inaugural product line and flagship sedan of the brand, the Q45 competed directly against the Acura Legend and Lexus LS 400, as multiple Japanese automobile manufacturers began to establish dedicated luxury-vehicle brands in North America during the late 1980s.

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

1997 Infiniti q45 trims & engines on record

Engines
4.0L

1997 Infiniti q45 vehicles on record

Other Infiniti q45 model years

1997 Infiniti q45 — frequently asked questions

Does the 1997 Infiniti q45 have any safety recalls?

NHTSA lists 3 recall campaigns for the 1997 Infiniti q45. 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 1997 Infiniti q45?

Across all 12 owner complaints filed with NHTSA, the most-reported problem areas are electrical system, air bags, suspension.

What gas mileage does the 1997 Infiniti q45 get?

The 1997 Infiniti q45 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.