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1991 Subaru Legacy

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

Body PASSENGER CARTransmission Automatic 4-spd

The 1991 Subaru Legacy is a midsize passenger car equipped with an automatic four‑speed transmission and a modest engine that requires 4.8 qt of 5W‑30 API oil, delivering EPA‑rated fuel economy of 19 mpg city, 26 mpg highway and 21 mpg combined. Its drivetrain and chassis were designed for everyday practicality rather than outright performance, yet the relatively generous oil capacity and the four‑speed automatic were notable for the era. In terms of reliability, the model recorded 111 owner complaints—most frequently concerning seat‑belt issues—and was subject to three recalls, placing it in the middle of the Legacy’s complaint spectrum, well below the 1995 peak of 216 complaints but above the 2025 low of six. This positioning suggests that while the 1991 Legacy is not the most problematic year, prospective researchers should still account for its modestly higher incidence of belt‑related concerns when evaluating long‑term durability.

Model year202520242023202220212020201920181991

Quick specs

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

Engine oil capacity4.8 qtOEM · verified
Engine oil type5W-30 APIOEM · verified
EPA fuel economy19/26/21 mpgEPA · verified

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

TransmissionAutomatic 4-spd

Dimensions & weight NHTSA vPIC

Overall length177.6 in
Overall width66.5 in
Overall height53.1 in
Wheelbase101.6 in
Curb weight3131 lb

Ratings & economy EPA / vPIC

EPA city / highway / combined19 / 26 / 21 mpg
DrivetrainFront-Wheel Drive
Passenger volume90 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 Legacy of this era, listed by trim and engine — this page spans more than one engine, so no single horsepower figure is shown.

7.9 sec0–60 mph (tested)quickest 7.90 sec — 1991 Sport
YearTrim / engine0–60¼ mileHPDrivetrain
1991Sport 2.2L Turbo F-47.90 sec16.10 sec160 hpAWD
1991Sport 2.2L Turbo F-47.90 sec16.40 sec160 hpAWD

Service quick specs OEM factory data

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

This engine holds 4.8 qt of 5W-30 API 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 Capacity1.6 Pints
Engine CoolantETHYLENE GLYCOL
Engine Oil5W-30 · API
Engine Oil Capacity4.8 qt
Power Steering FluidATF
Transfer Case Fluid80W-90 · GL-5

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the engine oil and filter at 3,000 mi.

At 3,000 miEngine Oil (drain & refill) · Engine Oil Filter (replace)
Every 7,500 miEngine Oil (drain & refill) · Engine Oil Filter (replace)
Every 15,000 miBody Latches, Locks & Hinges (inspect) · Brake System (inspect) · Clutch Assembly (inspect) · Engine Coolant System (leak inspection) · Hill Holder System (inspect) · Power Steering System (inspect)
Every 30,000 miBrake Drum Assembly (inspect) · Brake Hydraulic System (drain, refill & bleed) · Brake Power Booster Unit (inspect) · Differential (inspect fluid level) · Engine Air Filter Element (replace) · Fuel Filter (replace)
Every 60,000 miAccessory Drive Belt (inspect) · Timing Belt (replace) · Wheel Bearing (inspect)

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 Subaru Legacy sits at a point in the first-generation arc where owner complaints peaked at 111, slightly above the 102 reported for 1990, before declining to 70 in 1992 and 63 by 1994. Recalls and investigations, however, were already on a downward trend, with 3 recalls and 2 investigations in 1991 compared to 4 and 3 the prior year, and dropping further in subsequent model years. The top complaint areas for 1991—seat belts, power train, and service brakes—along with 4 crash-related complaints, highlight specific safety concerns, though the data does not specify root causes. This pattern suggests that while the 1991 model year attracted more owner-reported issues than its immediate predecessor, the reduction in formal recalls and investigations indicates that the most serious defects were being resolved early in the generation. A buyer considering a 1991 Legacy should be aware of these elevated complaint frequencies, but the overall trend points to improving reliability in later first-generation years, making a 1992 or newer model a potentially more trouble-free choice.

3
Open recalls
NHTSA campaigns
17
Service bulletins
Manufacturer communications
2
ODI investigations
Office of Defects Investigation
111
Owner complaints
4 involved a crash · 0 a fire
Owner complaints by model year NHTSA · this generation & adjacent
’90’91’92’93’94’95’96’97’98’99’00’01’02’03’04’05’06’07’08’09’10’11’12’13’14’15’16’17’18’19’20’21’22’23’24’25

Owner complaints filed with NHTSA, by component

All 111 complaints on record, top 8 components.

Seat Belts19
Power Train16
Service Brakes, Hydraulic13
Structure12
Latches/Locks/Linkages12
Visibility6
Vehicle Speed Control5
Electrical System4

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 3 campaigns on record for this vehicle.

94V052000Power Train:Manual TransmissionReported 23/03/1994

WHEN THE VEHICLE IS DRIVEN CONTINUOUSLY UNDER EXTREMELY COLD TEMPERATURES (-22 DEGREES F.) AND HIGH HUMIDITY WEATHER CONDITIONS, THE TRANSMISSION BREATHING (AIR) VENT CAN BE BLOCKED DUE TO MOISTURE FREEZING AT THE OIL… Remedy: DEALERS WILL MODIFY THE OIL GAUGE PIPE AND MODIFY THE OIL LEVEL GAUGE (DIPSTICK) OR REPLACE IT, DEPENDING ON THE TYPE OF DIPSTICK IN THE VEHICLE.

91V082000Power Train:Automatic TransmissionReported 30/05/1991

UNDER CERTAIN LOAD CONDITIONS, THE PARK GEAR MAY NOT DISENGAGE IMMEDIATELY WHEN THE TRANSMISSION LEVER IS MOVED FROM PARK TO REVERSE. Remedy: INSTALL A MODIFIED PARKING BRAKE PAWL TO PREVENT DELAYED RELEASE INTO REVERSE GEAR.

Technical service bulletins NHTSA · verified

Showing 5 of 17 bulletins on record with NHTSA.

BulletinDateComponentSummary
15-302-222022-08-23EquipmentThis bulletin contains illustrations of exchange components and their manufacturer as…
01-167-08R2022-08-23EquipmentThis bulletin contains additional information for recommended materials listed in the…
15-192-22R2022-03-18Electrical SystemThis bulletin has been developed to outline the steps for gathering basic essential…
01-167-08R2021-06-17Electrical SystemThis bulletin contains additional information for recommended materials listed in the…
09-51-08R2021-06-07EquipmentThis bulletin is to advise of SOA’s revised catalytic converter recycling program…

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 Legacy. 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.

Vehicles taking 4.8 qt

Reference guides

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

Vehicle recalls & TSBsOBD-II trouble codesMaintenance schedulesFluid capacities & specs

Frequently asked

How much oil does the 1991 Legacy take?

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

Does the 1991 Legacy have open recalls?

NHTSA lists 3 recall campaign(s) for this model year. Check your specific vehicle by VIN.

What gas mileage does the Legacy get?

EPA figures are 19 city / 26 highway / 21 combined mpg.