Subaru›Legacy›1999›2.5L/subaru/legacy/1999/2-5l/

1999 Subaru Legacy — 2.5L

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1999 Legacy 2.5L. Covers both the standard and High Output 2.5L.

Body PASSENGER CAREngine 2.5LTransmission Automatic 4-spd

The 1999 Subaru Legacy is a passenger car powered by a 2.5L engine paired with a 4-speed automatic transmission, returning EPA fuel economy of 18 mpg city, 24 mpg highway, and 21 mpg combined, with routine maintenance calling for 4.8 quarts of 5W-30 API oil. Owner feedback places it in a relatively moderate spot in the model's complaint history, which spans 1990 through 2025 and peaks at 216 complaints in 1995 before tapering to just 6 by 2025; this specific model year accumulated 98 total complaints, with the power train representing the top concern alongside 3 recalls. That complaint volume sits well below the model's historical high-water mark, suggesting the 1999 Legacy lands on the more settled side of the platform's reliability arc, though the concentration of power train issues means prospective owners should pay particular attention to that system when evaluating one today.

Model year2014 2013 2012 2011 2010 2009 2008 2007 1999

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

Lug nut torque58-72 ft-lbsOEM · verified

EPA fuel economy18/24/21 mpgEPA · verified

Fitment & sizes

Replacement part sizes and factory part numbers — battery, bulbs, filters and belts.

From the factory this vehicle uses a BCI 35 · 490 CCA battery. Each part links to every other vehicle that shares it, so a part you already stock may fit more of your fleet than you'd expect.

Battery groupBCI 35 · 490 CCAOEM · verified

Tail / brake / turnTURNOEM · verified

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

Transmission

Automatic 4-spd

Dimensions & weight NHTSA vPIC

Overall length	181.5 in
Overall width	67.7 in
Overall height	55.5 in
Wheelbase	103.5 in
Curb weight	2884 lb
Track (front / rear)	57.1 / 57.1 in
Weight distribution (front / rear)	56/44

Ratings & economy EPA / vPIC

EPA city / highway / combined	18 / 24 / 21 mpg
Drivetrain	4-Wheel or All-Wheel Drive
Passenger volume	92 cu ft
Cargo volume	13 cu ft
Recommended fuel	Regular Gasoline

Performance & power Independent road tests

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

Independent published road-test results.

9.0 sec0–60 mph (tested)quickest 9.00 sec — 1999 Limited

165 hpHorsepower (as tested)

162 lb-ftTorque (as tested)

Year	Trim / engine	0–60	¼ mile	HP	Drivetrain
1999	Limited 2.5L F-4	9.00 sec	16.90 sec	165 hp	AWD
1996	Outback 2.5L F-4	9.80 sec	17.40 sec	155 hp	AWD

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. Torque lug nuts to 58-72 ft-lbs. The firing order is 1-3-4-2. Note the cylinder-head bolts finish on a torque angle (torque-to-yield) — they stretch permanently and should be replaced, not reused, during any head service.

Lubricants & capacities

Brake Fluid	DOT 3
Differential Gear Oil	75W-90 · 80W-90 · GL-5
Differential Gear Oil Capacity	1.6 Pints
Engine Coolant	ETHYLENE GLYCOL
Engine Oil	5W-30 · API
Engine Oil Capacity	4.8 qt
Power Steering Fluid	ATF
Transfer Case Fluid	80W-90 · GL-5

Engine torques

Connecting Rod (Large End) Bearings	33 ft-lbs
Crankshaft Pulley and/or Damper Bolts	123-137 ft-lbs
Engine Flywheel Bolts	53 ft-lbs
Oil Pump to Cylinder BLock Bolts/Studs	5 ft-lbs

Chassis torques

Lug Nuts	58-72 ft-lbs
Transfer Case Drain Plug	17.0-20.0 ft-lbs
Front Wheel Hub	123-151 ft-lbs
Rear Wheel Hub	137 ft-lbs

Ignition

Cylinder Firing Order	1-3-4-2
Curb Idle Speed (No Load)	700 rpm
Curb Idle Speed Variance (No Load)	100 rpm
Ignition Coil Primary Resistance	.66-.80 ohms
Ignition Coil Secondary Resistance	10,880-14,720 ohms
Spark Plug Manufacturer	Champion
Spark Plug Gap	0.039-0.043 in
Spark Plug Torque	13-17 ft-lbs

Battery & A/C

Refrigerant	R134a
Refrigerant Capacity	0.88-1.65 lbs
Oil Group	PAG
Oil Capacity	4.50-5.50 oz
Standard BCI Group Number	35
Standard BCI Cranking Performance	490 cca

Service checks

Pressure Test	23 psi
Radiator Cap Pressure Relief	14-18 psi
Thermostat Opening Temperature	169-176 °F
Injector Primary Resistance	5-20 ohms
Engine Compression	137-176 psi
Engine Oil Pressure	14 psi @ 600-700 rpm, 43 psi @ 5000 rpm psi
Intake Valve Lash	0.008 in
Exhaust Valve Lash	0.010 in

Brakes

Minimum Pad Thickness	Front: 0.295; Rear: 0.256 specification
Vented Rotor Minimum Thickness for Replacement	Front: .866; Rear: .630
Maximum Rotor Runout	Front: .0028; Rear: .0029
Maximum Drum Diameter	Front: 9.079; Parking Brake: 6.732

Multi-step torque procedures OEM · verified

Cylinder Head — tightening sequence 7 stages

Prep Do not reuse old bolts. Coat bolt head washers and threads with clean engine oil

1	22.0 ft. lbs.	22 ft. lbs
2	51.0 ft. lbs.	51 ft. lbs
3	Loosen bolts 360 degrees in reverse order	360 degrees
4	Bolts 1and2	25 ft. lbs
5	Bolts 3and6	11 ft. lbs
6	90 degrees	90 degrees
7	90 degrees	90 degrees

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; spark plugs every 60,000 mi.

At 3,000 mi	Engine Oil (drain & refill) · Engine Oil Filter (replace)
Every 7,500 mi	Engine Oil (drain & refill) · Engine Oil Filter (replace) · Tire & Wheel Assembly (rotate)
Every 15,000 mi	Body Latches, Locks & Hinges (inspect) · Brake Linings (inspect) · Brake System (inspect) · Clutch Assembly (inspect) · Clutch Master Cylinder (inspect fluid level) · Engine Coolant System (leak inspection)
Every 30,000 mi	Brake Drum Assembly (inspect) · Brake Hydraulic System (drain, refill & bleed) · Differential (inspect fluid level) · Engine Air Filter Element (replace) · Engine Breather Filter (replace) · Headlamp (inspect alignment)
Every 60,000 mi	Spark Plugs (replace) · Wheel Bearing (inspect)
At 105,000 mi	Accessory Drive Belt (inspect) · Drive Belt (replace) · Engine Valves (inspect valve lash) · Timing Belt (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 1999 Subaru Legacy sits at the mature tail end of its generation (1995-1999), which followed a downward complaint trend after a severe spike of 216 complaints in 1995. With 98 complaints and 3 recalls in 1999, it represents the lowest complaint volume of its generation arc and a notable stabilization from the 1997 recall peak of six. The primary complaint areas for the 1999 model are Power Train (19), Vehicle Speed Control (9), Service Brakes, Hydraulic (9), and Air Bags (7), contributing to 19 crash and 1 fire complaint, though the data does not specify the root causes for these failures. Looking ahead, the subsequent generation saw lower complaint volumes but a massive spike in Technical Service Bulletins and recalls (up to 15 in 2003), suggesting the 1999 model avoids the immediate complexities of that redesign. As a stabilized end-of-generation model with the lowest complaint count in its arc and zero federal investigations, the 1999 Legacy is a reasonable used purchase, provided you specifically inspect the powertrain and speed control systems.

Open recalls

NHTSA campaigns

Service bulletins

Manufacturer communications

ODI investigations

Office of Defects Investigation

Owner complaints

19 involved a crash · 1 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 98 complaints on record, top 8 components.

Power Train19

Vehicle Speed Control9

Service Brakes, Hydraulic9

Air Bags7

Engine & Engine Cooling7

Suspension6

Fuel System, Gasoline5

Tires4

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 3 campaigns on record for this vehicle.

01V216000Suspension:Front:Springs:Coil SpringsReported 25/06/2001

VEHICLE DESCRIPTION: PASSENGER VEHICLES EQUIPPED WITH FRONT COIL SPRINGS ORIGINALLY SOLD IN OR CURRENTLY REGISTERED IN THE STATES OF CONNECTICUT, DELAWARE, ILLINOIS, INDIANA, IOWA, KENTUCKY, MAINE, MARYLAND… Remedy: DEALERS WILL NOTIFIY CUSTOMERS TO BRING THEIR VEHICLE TO AN AUTHORIZE DEALERSHIP TO HAVE A SPRING GUARD INSTALLED ON BOTH FRONT STRUTS TO PREVENT TIRE PUNCTURE AND REPLACE ANY…

99V040000Service Brakes, Hydraulic:Foundation Components:Master CylinderReported 03/03/1999

VEHICLE DESCRIPTION: PASSENGER AND SPORT UTILITY VEHICLES EQUIPPED WITH ANTI-LOCK BRAKING SYSTEM (ABS). (THE 1999 2.2 LITER LEGACY VEHICLES ARE EXCLUDED). IN EXTREMELY COLD WEATHER, THE BRAKE PEDAL GOES TO THE FLOOR AND… Remedy: DEALERS WILL REPLACE THE BRAKE MASTER CYLINDER.

Technical service bulletins NHTSA · verified

Showing 5 of 43 bulletins on record with NHTSA.

Bulletin	Date	Component	Summary
12-249-23R	2023-07-11	Equipment	This bulletin announces the recommended cleaning procedures to followed when encountering…
15-302-22	2022-08-23	Equipment	This bulletin contains illustrations of exchange components and their manufacturer as…
01-167-08R	2022-08-23	Equipment	This bulletin contains additional information for recommended materials listed in the…
15-192-22R	2022-03-18	Electrical System	This bulletin has been developed to outline the steps for gathering basic essential…
01-167-08R	2021-06-17	Electrical System	This bulletin contains additional information for recommended materials listed in the…

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.

Group 35 battery Vehicles taking 4.8 qt

Reference guides

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

Vehicle recalls & TSBs OBD-II trouble codes Torque specifications Maintenance schedules Fluid capacities & specs

Frequently asked

How much oil does the 1999 Legacy 2.5L take?

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

Does the 1999 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 2.5L get?

EPA figures are 18 city / 24 highway / 21 combined mpg.