Subaru›Legacy›2012›3.6L/subaru/legacy/2012/3-6l/

2012 Subaru Legacy — 3.6L

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2012 Legacy 3.6L.

Body PASSENGER CAREngine 3.6LTransmission Automatic (S5)

The 2012 Subaru Legacy 3.6L is a passenger car powered by a 3.6-liter engine and Automatic (S5) transmission, an arrangement EPA-rated at 18/24/20 mpg and calling for 7 quarts of 5W-30 API engine oil. Owner-reported reliability data logs 90 total complaints for this model year, with Power Train cited as the top complaint area and 16 recalls issued. Within the Legacy’s 1990–2025 complaint history—a span that saw a high of 216 complaints in 1995 and a low of 6 in 2025—the 2012 model sits below the historical peak though above the series’ modern floor.

Model year2014 2013 2012 2011 2010

Quick specs

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

Engine oil capacity7 qtOEM · verified

Engine oil type5W-30 APIOEM · verified

Lug nut torque89 ft-lbsOEM · verified

EPA fuel economy18/24/20 mpgEPA · verified

Fitment & sizes

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

From the factory this vehicle uses a BCI 25 · 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 25 · 490 CCAOEM · verified

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

Transmission

Automatic (S5)

Dimensions & weight NHTSA vPIC

Overall length	186.2 in
Overall width	71.7 in
Overall height	59.4 in
Wheelbase	108.3 in
Curb weight	3538 lb
Track (front / rear)	61.8 / 61.8 in
Weight distribution (front / rear)	58/42

Ratings & economy EPA / vPIC

EPA city / highway / combined	18 / 24 / 20 mpg
Drivetrain	All-Wheel Drive
Passenger volume	103 cu ft
Cargo volume	15 cu ft
Recommended fuel	Regular Gasoline

Performance & power Independent road tests

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

No 2012 road test on record; the results below are same-engine tests from nearby model years, each shown under its own year.

6.4–7.0 sec0–60 mph (tested)quickest 6.40 sec — 2010 3.6R Limited

256 hpHorsepower (as tested)

247 lb-ftTorque (as tested)

Year	Trim / engine	0–60	¼ mile	HP	Drivetrain
2010	3.6R Limited 3.6L F-6	6.40 sec	15.00 sec	256 hp	AWD
2010	3.6R Limited 3.6L F-6	6.99 sec	15.30 sec	256 hp	AWD

Service quick specs OEM factory data

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

This engine holds 7 qt of 5W-30 API engine oil, DOT 3 brake fluid. Torque lug nuts to 89 ft-lbs, the oil drain plug to 33.0 ft-lbs. The firing order is 1-6-3-2-5-4. 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

Automatic Transmission Fluid	Subaru Lienartronic CVT fluid
Automatic Transmission Fluid Capacity	13.2
Brake Fluid	DOT 3
Engine Coolant	ETHYLENE GLYCOL
Engine Oil	5W-30 · API
Engine Oil Capacity	7 qt
Manual Transmission Fluid	75W-90 · GL-5
Manual Transmission Fluid Capacity	7.0-9.0

Engine torques

Connecting Rod (Large End) Bearings	44.3 ft-lbs
Crankshaft Pulley and/or Damper Bolts	35 ft-lbs
Engine Flywheel Bolts	66.4 ft-lbs
Intake Manifold to Engine Bolts	18.4 ft-lbs
Exhaust Manifold to Cylinder Head Bolts	22 ft-lbs
Engine Oil Pan Drain Plug	33.0 ft-lbs
Oil Pump to Cylinder BLock Bolts/Studs	10 ft-lbs

Chassis torques

Lug Nuts	89 ft-lbs
Transfer Case Drain Plug	17.0-20.0 ft-lbs
Front Wheel Hub	162 ft-lbs
Rear Wheel Hub	177 ft-lbs

Ignition

Cylinder Firing Order	1-3-2-4
Cylinder Firing Order	1-6-3-2-5-4
Curb Idle Speed (No Load)	MT: 650, AT: 675, TURBO: 700 rpm
Curb Idle Speed Variance (No Load)	100 rpm
Curb Idle Speed (No Load)	MT: 650, AT: 675 rpm
Curb Idle Speed Variance (No Load)	100 rpm

Battery & A/C

Refrigerant	R134a
Refrigerant Capacity	.88-1.00 lbs
Oil Group	PAG
Oil Type	46
Standard BCI Group Number	25
Standard BCI Cranking Performance	490 cca

Service checks

Pressure Test	23 psi
Radiator Cap Pressure Relief	14-18 psi
Thermostat Opening Temperature	189-196 °F
Injector Primary Resistance	12.0 ohms
Engine Compression	145-185 psi. 7 variance psi.
Engine Oil Pressure	15 psi @ 600 rpm, 73 psi @ 5000 rpm psi
Intake Valve Lash	0.0079-0.0080 in
Exhaust Valve Lash	0.010-0.0138 in

Brakes

Brake Application	WITH SOLID ROTOR / WITH VENTED ROTOR
Torque Caliper to Bracket	20 ft-lbs / 88.5 ft-lbs
Torque to Knuckle	48.7 ft-lbs / 88.5 ft-lbs
Other	STANDARD WHEELS
Wheel Application	17 inch WHEELS
Minimum Pad Thickness	Front: 0.059; Rear: 0.059 in
Brake Application	WITH SOLID ROTOR / WITH VENTED ROTOR
Rotor Runout Limit	0.002 in

Multi-step torque procedures OEM · verified

Cylinder Head — tightening sequence 9 stages

Prep Bolts 1-8:

1	14.8 ft. lbs.	14.8 ft. lbs
2	36.9 ft. lbs.	36.9 ft. lbs
3	Loosen 180 degrees.	180 degrees
4	Loosen 180 degrees.	180 degrees
5	14.8 ft. lbs.; Bolts 1-4:	14.8 ft. lbs
6	35.4 ft. lbs.; Bolts 5-8:	35.4 ft. lbs
6	32.5 ft. lbs.; All Bolts:	32.5 ft. lbs
7	90 degrees.; Bolts 1-4:	90 degrees
8	45 degrees.	45 degrees
9	Install seal bolt 9	4.7 ft. lbs

Main Bearings — tightening sequence 1 stages

9 ft. lbs., Step 2: 13 ft. lbs., Step 3: 90

9 ft. lbs

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the engine oil and filter every 1,200 mi; spark plugs every 60,000 mi.

Every 1,200 mi	Engine Oil (inspect fluid level)
At 3,000 mi	Engine Oil (drain & refill) · Engine Oil Filter (replace)
Every 6,000 mi	Accessory Drive Belt (inspect) · Body Latches, Locks & Hinges (lubricate) · CV Joint Boot (inspect) · Differential (inspect fluid level) · Engine Oil Filter (replace) · Exterior Lighting (inspect)
Every 7,500 mi	Engine Oil (drain & refill) · Engine Oil Filter (replace)
Every 12,000 mi	Brake System (inspect) · Engine Air Filter Element (inspect) · Engine Coolant System (inspect fluid level) · Engine Coolant System Hoses (inspect)
Every 15,000 mi	Brake Line (inspect) · Cabin Air Filter (replace) · Clutch Master Cylinder (inspect fluid level) · Drive Axle Assembly (inspect)
Every 30,000 mi	Fuel Line (inspect) · Timing Belt Tensioner (inspect) · Transmission Assembly (inspect fluid level)
Every 36,000 mi	Battery (inspect) · Brake Hydraulic System (drain, refill & bleed) · Fuel Evaporative Emission Control System Lines (inspect) · Fuel Injector (inspect) · PCV Valve (inspect) · Parking Brake System (inspect)
Every 60,000 mi	Spark Plugs (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 2012 Subaru Legacy represents a mid-cycle refresh within its fifth generation, and its federal record reflects a notable improvement in reliability compared to the preceding years. Complaints dropped to 90 in 2012 from 167 in 2011 and 150 in 2010, signaling Subaru’s response to early-generation issues, though recalls remained steady at 16—consistent with the elevated recall activity seen from 2009 onward. The generation’s peak complaint years (2010–2011) were followed by a downward trend, with 2012 marking a relative low before complaints rose again in 2015–2016, suggesting the 2012 model benefited from corrective measures. Power train and engine complaints dominate the 2012 data, though these figures are lower than in prior years, and the absence of fire-related complaints is a positive outlier. With only one investigation in 2012 and a high volume of TSBs (324), Subaru appears to have proactively addressed issues through service bulletins rather than recalls. **This makes the 2012 Legacy a comparatively strong used purchase within its generation, assuming proper maintenance history.**

Open recalls

NHTSA campaigns

324

Service bulletins

Manufacturer communications

ODI investigations

Office of Defects Investigation

Owner complaints

7 involved a crash · 0 a fire

NHTSA crash-test rating federal NCAP · out of 5 stars

Frontal★★★★★

Rollover★★★★★

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 90 complaints on record, top 8 components.

Power Train26

Engine13

Air Bags10

Unknown Or Other8

Steering4

Service Brakes3

Power Train,Engine2

Suspension2

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 16 campaigns on record for this vehicle.

19V009000Air Bags:Frontal:Passenger Side:Inflator ModuleReported 09/01/2019

Subaru of America, Inc. (Subaru) is recalling certain 2010-2014 Tribeca, WRX, Legacy and Outback vehicles, 2010-2011 Impreza vehicles and 2010-2013 Forester vehicles sold, or ever registered, in the states of Alaska… Remedy: Subaru is notifying owners, and dealers will replace the front passenger air bag inflator, free of charge. The recall began on January 25, 2019. Owners may contact Subaru customer…

18V626000Parking BrakeReported 13/09/2018

Subaru of America, Inc. (Subaru) is recalling certain 2010-2014 Subaru Legacy and Outback vehicles equipped with a manual transmission. The electronic parking brake (EPB) may not engage as intended, allowing the vehicle… Remedy: Subaru will notify owners, and dealers will replace the EPB actuator assembly, free of charge. The recall began July 19, 2019. Owners may contact Subaru customer service at…

Technical service bulletins NHTSA · verified

Showing 5 of 324 bulletins on record with NHTSA.

Bulletin	Date	Component	Summary
SubaruNet Annoucement (E	2026-06-11	Unknown Or Other	This announcement is requesting retailer staff to retain the EyeSight protective hood…
01-167-08R	2026-05-18	Unknown Or Other	This bulletin contains additional information for recommended materials listed in the…
SubaruNet Announcement (R	2026-05-04	Power Train	This announcement provides information on the remanufactured CVT transmission program.
07-240-26R	2026-04-30	Unknown Or Other	This Service Information Bulletin was developed to provide interim guidance for vehicles…
03-97-26	2026-04-24	Power Train	This bulletin announces the service manual correction regarding clutch master cylinder…

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 25 battery Vehicles taking 7 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 2012 Legacy 3.6L take?

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

Does the 2012 Legacy have open recalls?

NHTSA lists 16 recall campaign(s) for this model year. Check your specific vehicle by VIN.

What gas mileage does the 3.6L get?

EPA figures are 18 city / 24 highway / 20 combined mpg.