InfinitiG201991Overview/infiniti/g20/1991/base/

1991 Infiniti G20

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1991 G20.

Transmission Automatic 4-spd

Equipped with a 4-spd Automatic transmission, the 1991 Infiniti G20 achieves EPA fuel economy ratings of 19/26/22 mpg and requires 3.6 qt of 5W-30 API SM oil for engine maintenance. Within the broader 1991-2002 model complaint history, this specific year accumulated 14 total owner complaints, with the Electrical System identified as the top complaint area. While this figure exceeds the lineage's lowest mark of 7 complaints set in 1994, it remains significantly below the peak of 29 complaints seen in 1995, positioning the 1991 model with a moderate standing in reliability history alongside its 2 recorded recalls.

Model year200220012000199919961995199419931991

Quick specs

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

Engine oil capacity3.6 qtOEM · verified
Engine oil type5W-30 API SMOEM · verified
EPA fuel economy19/26/22 mpgEPA · verified

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

TransmissionAutomatic 4-spd

Ratings & economy EPA / vPIC

EPA city / highway / combined19 / 26 / 22 mpg
DrivetrainFront-Wheel Drive
Passenger volume89 cu ft
Cargo volume14 cu ft
Recommended fuelRegular Gasoline

Performance & power Independent road tests

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

Independent road tests for the G20 of this era, listed by trim and engine — this page spans more than one engine, so no single horsepower figure is shown.

8.2–8.7 sec0–60 mph (tested)quickest 8.20 sec — 1991 Sedan
YearTrim / engine0–60¼ mileHPDrivetrain
1991Sedan 2.0L I-48.20 sec16.50 sec140 hpFWD
1991Sedan 2.0L I-48.70 sec16.70 sec140 hpFWD
1991Sedan 2.0L I-48.70 sec16.80 sec140 hpFWD
1994t Sedan 2.0L I-48.40 sec16.50 sec140 hpFWD

Service quick specs OEM factory data

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

This engine holds 3.6 qt of 5W-30 API SM engine oil, DOT 3 brake fluid.

Lubricants & capacities

Brake FluidDOT 3
Engine CoolantETHYLENE GLYCOL
Engine Oil5W-30 · API
Engine Oil Capacity3.6 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 3,750 miTransmission Assembly (inspect fluid level)
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) · Axle Shaft Oil Seal (inspect) · Brake System (inspect) · CV Joint Boot (inspect) · 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 miSpark 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 1991 Infiniti G20 marks the debut year of its generation, registering 14 complaints—higher than the 10 in 1992 and 8 in 1993 but well below the 29-spike in 1995. Recalls remained steady at two for 1991, matching the subsequent three years before dropping to one in 1996, while Technical Service Bulletins (TSBs) held at 36, consistent with 1992. Complaint trends for the 1991 model cluster in the electrical system and equipment (three each), with one reported fire incident, though the data doesn’t specify root causes. Compared to later years, 1991’s figures suggest typical first-year teething issues rather than systemic flaws, as complaint volumes decline in the immediate years that follow. The absence of crash-related complaints or investigations further indicates no major safety outliers for the model year. **Takeaway:** The 1991 G20 is a relatively sound choice within its generation, with no red flags in the federal record to discourage a purchase.

2
Open recalls
NHTSA campaigns
36
Service bulletins
Manufacturer communications
0
ODI investigations
Office of Defects Investigation
14
Owner complaints
0 involved a crash · 1 a fire
NHTSA crash-test rating federal NCAP · out of 5 stars
Overall★★★★
Frontal★★★★
Side★★★★★
Rollover★★★★★
Owner complaints by model year NHTSA · this generation & adjacent

Owner complaints filed with NHTSA, by component

All 14 complaints on record, top 8 components.

Electrical System3
Equipment3
Fuel System, Gasoline2
Seat Belts2
Wheels1
Engine & Engine Cooling,Visibility1
Power Train1
Visibility1

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 2 campaigns on record for this vehicle.

97V072000Fuel System, Gasoline:Storage:Tank Assembly:Filler Pipe And CapReported 22/04/1997

VEHICLE DESCRIPTION: PASSENGER VEHICLES ORIGINALLY SOLD OR CURRENTLY REGISTERED IN THE FOLLOWING STATES: CONNECTICUT, DELAWARE, ILLINOIS, INDIANA, IOWA, MAINE, MARYLAND, MASSACHUSETTS, MICHIGAN, MINNESOTA, NEW… Remedy: DEALERS WILL INSPECT THE FUEL FILLER TUBE AND REPLACE THE TUBE WITH A NEW ONE. ANY OTHER COMPONENTS OF THE FUEL FILLER TUBE ASSEMBLY WHICH ARE DAMAGED OR DETERIORATED WILL ALSO BE…

97V071000Seat Belts:Rear/OtherReported 22/04/1997

THE RELEASE BUTTON USED IN THE REAR SEAT BELT BUCKLES WERE NOT MADE ACCORDING TO SPECIFICATIONS. IN HOT WEATHER, THE PLASTIC WELDS SECURING THE RELEASE BUTTON TO THE SPRING CAN FAIL RESULTING IN PARTIAL ENGAGEMENT OF… Remedy: DEALERS WILL REPLACE ALL REAR SEAT BELT BUCKLES WITH NEW SEAT BELT BUCKLES.

Technical service bulletins NHTSA · verified

Showing 5 of 36 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 G20. 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 1991 G20 take?

3.6 qt of 5W-30 API SM, per the factory manual.

Does the 1991 G20 have open recalls?

NHTSA lists 2 recall campaign(s) for this model year. Check your specific vehicle by VIN.

What gas mileage does the G20 get?

EPA figures are 19 city / 26 highway / 22 combined mpg.