InfinitiQ451992Overview/infiniti/q45/1992/base/

1992 Infiniti Q45

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1992 Q45.

Transmission Automatic 4-spd

The 1992 Infiniti Q45 pairs a 4-speed automatic transmission with a 6.3-quart engine oil capacity, delivering EPA fuel economy of 15 city and 20 highway mpg. Owner records show 29 complaints for this model year—centered on the power train—plus a single recall. Within the Q45's broader 1990–2006 complaint history, 1992 falls between the 1991 peak of 47 complaints and the 1993 low of just 2, placing it at a transitional point where early powertrain issues were easing but had not yet bottomed out.

Model year200620052004200320022001199919981992

Quick specs

Fluid capacities, tune-up values and fuel economy at a glance.

Engine oil capacity6.3 qtOEM · verified
Engine oil type5W-30 / 10W-30 API SMOEM · verified
EPA fuel economy15/20/17 mpgEPA · verified

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

TransmissionAutomatic 4-spd

Dimensions & weight NHTSA vPIC

Overall length200 in
Overall width72 in
Overall height56.3 in
Wheelbase113.4 in
Curb weight3951 lb
Weight distribution (front / rear)57/43

Ratings & economy EPA / vPIC

EPA city / highway / combined15 / 20 / 17 mpg
DrivetrainRear-Wheel Drive
Passenger volume95 cu ft
Cargo volume15 cu ft
Recommended fuelPremium Gasoline

Performance & power Independent road tests

0–60 mph, quarter-mile, horsepower and torque from independent road tests.

Independent road tests for the Q45 of this era, listed by trim and engine — this page spans more than one engine, so no single horsepower figure is shown.

6.9–8.2 sec0–60 mph (tested)quickest 6.90 sec — 1990 Sedan
YearTrim / engine0–60¼ mileHPDrivetrain
1991t Sedan 4.5L V87.30 sec15.60 sec278 hpRWD
1990Sedan 4.5L V86.90 sec15.40 sec278 hpRWD
1990Sedan 4.5L V87.20 sec15.30 sec278 hpRWD
1990Sedan 4.5L V87.90 sec15.80 sec278 hpRWD
1994t Sedan 4.5L V88.20 sec16.30 sec278 hpRWD
1995a Sedan (Full-Active Suspension) 4.5L V87.80 sec16.10 sec278 hpRWD
1995t Sedan 4.5L V87.90 sec16.20 sec278 hpRWD

Service quick specs OEM factory data

Capacities, torques and tune-up values from the factory service manual.

This engine holds 6.3 qt of 5W-30 / 10W-30 API SM engine oil, 75W-90 · 80W-90 · GL-5 in the differential, DOT 3 brake fluid.

Lubricants & capacities

Brake FluidDOT 3
Differential Gear Oil75W-90 · 80W-90 · GL-5
Differential Gear Oil Capacity3.1 Pints
Engine CoolantETHYLENE GLYCOL
Engine Oil5W-30 · 10W-30 · API
Engine Oil Capacity6.3 qt
Power Steering FluidATF

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the engine oil and filter at 7,500 mi; spark plugs every 60,000 mi; coolant every 30,000 mi. The big-interval services (every 30,000 mi for coolant, and the transmission fluid) are the ones owners most often skip — on a lower-mileage example, assume the original fluids are still in it and check them first.

At 7,500 miEngine Oil Filter (replace)
Every 7,500 miBattery (inspect electrolyte level) · Engine Oil (drain & refill) · Tire & Wheel Assembly (rotate)
Every 15,000 miAccessory Drive Belt (inspect) · Brake System (inspect) · Differential (inspect fluid level) · Engine Oil Filter (replace) · Exhaust System (Complete) (inspect)
Every 30,000 miEngine Air Filter Element (replace) · Engine Coolant System (drain, flush & refill) · Fuel Evaporative Emission Control System Lines (inspect) · Fuel Line (inspect) · PCV Hose (inspect) · Steering Linkage (inspect)
At 60,000 miAccessory Drive Belt (inspect) · Engine Coolant System (drain, flush & refill)
Every 60,000 miActive Suspension System (drain & refill) · Spark Plugs (replace)

Reliability & federal safety record

Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.

The first generation of the Infiniti Q45 exhibits an early-generation arc of escalating federal scrutiny, peaking in 1991 with 47 complaints, 2 recalls, and 3 investigations before declining in the 1992 model year. For 1992, complaints dropped to 29 with only 1 recall and 0 investigations, positioning it as a stabilizing year that still carries more regulatory friction than the subsequent 1993 model, which saw complaints plummet to just 2. The 1992 model's primary trouble areas center on the Power Train (6 complaints) and Engine & Engine Cooling (5 complaints), alongside notable safety concerns with 6 fire-related and 3 crash-related complaints, though the data does not specify the root causes for these incidents. While 1992 avoids the high investigation volume of the 1990-1991 models, it lacks the remarkable compliance of the 1993 model year, and the later 1994 model year's complaint spike to 36 suggests lingering mechanical inconsistencies across this generation. Given its intermediate position in the generation's stabilization curve and its specific power train and fire complaints, the 1992 Q45 is a passable but not ideal purchase; a prospective buyer would be better served seeking a 1993 model to bypass the early-generation bugs without the later mid-generation anomalies.

1
Open recalls
NHTSA campaigns
34
Service bulletins
Manufacturer communications
0
ODI investigations
Office of Defects Investigation
29
Owner complaints
3 involved a crash · 6 a fire
Owner complaints by model year NHTSA · this generation & adjacent

Owner complaints filed with NHTSA, by component

All 29 complaints on record, top 8 components.

Power Train6
Engine & Engine Cooling5
Equipment4
Electrical System3
Vehicle Speed Control2
Engine & Engine Cooling,Power Train,Electrical System1
Steering,Fuel System, Gasoline1
Fuel System, Gasoline1

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 1 of 1 campaigns on record for this vehicle.

98V284000Equipment:Electrical:Radio/Tape Deck/Cd Etc.Reported 05/11/1998

VEHICLE DESCRIPTION: PASSENGER VEHICLES EQUIPPED WITH BOSE REAR SPEAKERS THAT HAVE AN INTEGRAL AMPLIFIER. A CONDUCTIVE BRIDGE CAN FORM BETWEEN TWO LINES OF THE CIRCUIT BOARD PATTERN WHEN THERE IS ACCUMULATED ELECTROLYTE… Remedy: DEALERS WILL REPLACE THE CIRCUIT BOARD WITH A NEW BOARD THAT HAS BEEN COATED.

Technical service bulletins NHTSA · verified

Showing 5 of 34 bulletins on record with NHTSA.

BulletinDateComponentSummary
ITB13-007H2023-02-27StructureREMOVING FOREIGN MATERIAL FROM THE WINDOW GLASS This bulletin has been amended. See…
ITB09-039J2023-02-27VisibilityWINDSHIELD CRACKING This bulletin has been amended. See AMENDMENT HISTORY on the last…
ITB10-067C2023-02-22WheelsWHEEL BEARING COLLISION DAMAGE This bulletin has been amended. See AMENDMENT HISTORY on…
ITB16-006A2021-03-24Electrical SystemINFINITI; FRONT SONAR PARKING SENSOR SERVICE INFORMATION This bulletin has been amended…
ITB19-0082019-04-02EquipmentEXTERIOR CLEANING INFORMATION SERVICE INFORMATION When cleaning the exterior of an…

Common OBD-II trouble codes

The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.

P0420
Catalyst system efficiency below threshold — Bank 1
P0300
Random / multiple cylinder misfire detected
P0171
System too lean — Bank 1
P0455
Evaporative emission system leak detected — large leak
P0128
Coolant thermostat below regulating temperature
P0442
Evaporative emission system leak detected — small leak

VIN tools

Decode factory build data for a specific vehicle by VIN.

VIN
Decode a VIN to confirm the transmission and build data for a specific Q45. OEM
Build data
Plant, GVWR class, engine and body data for any 17-character VIN.
Recalls
Check open recall campaigns against a specific vehicle by VIN.

Vehicles with shared specs

Find every vehicle that shares this one's battery, bulbs, oil capacity, platform or parts.

Reference guides

Cross-vehicle references for the kinds of data on this page.

Frequently asked

How much oil does the 1992 Q45 take?

6.3 qt of 5W-30 OR 10W-30 API SM, per the factory manual.

Does the 1992 Q45 have open recalls?

NHTSA lists 1 recall campaign(s) for this model year. Check your specific vehicle by VIN.

What gas mileage does the Q45 get?

EPA figures are 15 city / 20 highway / 17 combined mpg.