SubaruLegacy20012.5L/subaru/legacy/2001/2-5l/

2001 Subaru Legacy — 2.5L

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2001 Legacy 2.5L. Covers both the standard and High Output 2.5L.

Body PASSENGER CAREngine 2.5LTransmission Automatic 4-spd

The 2001 Subaru Legacy 2.5L is a passenger car featuring a 2.5L engine paired with a 4-speed automatic transmission and an EPA-rated fuel economy of 19/25/21 mpg. This powertrain utilizes 4.2 quarts of 5W-30 API engine oil. Within the model's 1990-2025 reliability history, this year sits between the peak of 216 complaints in 1995 and the low of 6 in 2025, recording 81 total complaints—centered primarily on the gasoline fuel system—and 8 recalls.

Model year201420132012201120102009200820072001

Quick specs

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

Engine oil capacity4.2 qtOEM · verified
Engine oil type5W-30 APIOEM · verified
Lug nut torque58-72 ft-lbsOEM · verified
EPA fuel economy19/25/21 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

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

TransmissionAutomatic 4-spd

Dimensions & weight NHTSA vPIC

Overall length184.6 in
Overall width68.9 in
Overall height55.9 in
Wheelbase104.3 in
Curb weight3309 lb
Track (front / rear)57.9 / 57.5 in
Weight distribution (front / rear)56/44

Ratings & economy EPA / vPIC

EPA city / highway / combined19 / 25 / 21 mpg
Drivetrain4-Wheel or All-Wheel Drive
Passenger volume91 cu ft
Cargo volume12 cu ft
Recommended fuelRegular Gasoline

Performance & power Independent road tests

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

No 2001 road test on record; the results below are same-engine tests from nearby model years, each shown under its own year.

8.8–9.1 sec0–60 mph (tested)quickest 8.80 sec — 2003 L
165 hpHorsepower (as tested)
166 lb-ftTorque (as tested)
YearTrim / engine0–60¼ mileHPDrivetrain
20002.5GT Limited 2.5L F-49.10 sec16.60 sec165 hpAWD
2003L 2.5L F-48.80 sec16.80 sec165 hpAWD

Service quick specs OEM factory data

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

This engine holds 4.2 qt of 5W-30 API engine oil, DOT 3 brake fluid. Torque lug nuts to 58-72 ft-lbs. The firing order is 1-3-4-2.

Lubricants & capacities

Brake FluidDOT 3
Engine CoolantETHYLENE GLYCOL
Engine Oil5W-30 · API
Engine Oil Capacity4.2 qt
Power Steering FluidATF

Engine torques

Connecting Rod (Large End) Bearings33 ft-lbs
Crankshaft Pulley and/or Damper Bolts123-137 ft-lbs
Engine Flywheel Bolts53 ft-lbs
Oil Pump to Cylinder BLock Bolts/Studs5 ft-lbs

Chassis torques

Lug Nuts58-72 ft-lbs
Transfer Case Drain Plug17.0-20.0 ft-lbs
Rear Wheel Hub174 ft-lbs

Ignition

Cylinder Firing Order1-3-4-2
Curb Idle Speed (No Load)MT: 650, AT: 700 rpm
Curb Idle Speed Variance (No Load)100 rpm
Ignition Coil Primary Resistance.66-.80 ohms
Ignition Coil Secondary Resistance10,880-14,720 ohms
Spark Plug ManufacturerChampion
Spark Plug Gap0.039-0.043 in
Spark Plug Torque13-17 ft-lbs

Battery & A/C

RefrigerantR134a
Refrigerant Capacity0.88-1.65 lbs
Oil GroupPAG
Oil Capacity4.50-5.50 oz
Standard BCI Group Number35
Standard BCI Cranking Performance490 cca

Service checks

Injector Primary Resistance5-20 ohms
Engine Compression148-185 psi
Engine Oil Pressure14 psi @ 600-700 rpm, 43 psi @ 5000 rpm psi
Intake Valve Lash0.008 in
Exhaust Valve Lash0.010 in

Brakes

Minimum Pad ThicknessFront: 0.295; Rear: 0.256 specification
Vented Rotor Minimum Thickness for ReplacementFront: .866; Rear: .335
Maximum Drum Diameter9.079 / Front: 9.079; Parking Brake: 6.732
Maximum Rotor RunoutFront: .0028; Rear: .0029

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) · Tire & Wheel Assembly (rotate)
Every 9,300 miCabin Air Filter (replace)
Every 15,000 miBody 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 miBrake Drum Assembly (inspect) · Brake Hydraulic System (drain, refill & bleed) · Differential (inspect fluid level) · Engine Air Filter Element (replace) · Engine Breather Filter (replace) · Fuel Filter (replace)
Every 60,000 miWheel Bearing (inspect)
At 105,000 miAccessory 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 2001 model year represents a transitional point in the Legacy's second generation, and the data presents a mixed picture. Consumer complaints actually declined to 81—down from 103 in 2000 and significantly below the mid-1990s peak of 216—indicating owners were reporting fewer issues than in prior years. However, manufacturer action tells a different story: recalls doubled from 4 in 2000 to 8 in 2001, and TSBs surged from 93 to 155, suggesting Subaru was addressing emerging problems through official channels even as formal complaints dropped. The 2001 complaint profile shows fuel system issues (14), vehicle speed control (9), and engine/cooling problems (8) as top concerns, with 12 crash-related complaints and 2 fire complaints recorded. Notably, 2003 would later see a sharp escalation with 15 recalls and 2 investigations, suggesting the early 2000s Legacy generation faced cumulative engineering challenges that Subaru addressed progressively. The 2001 model sits in a relative sweet spot with low complaint volume but heightened manufacturer scrutiny—it was clearly a year Subaru was actively servicing. A pre-purchase inspection should verify that the fuel system and speed control recalls/TSBs have been addressed, and the vehicle history should be checked for open recalls before buying.

8
Open recalls
NHTSA campaigns
155
Service bulletins
Manufacturer communications
0
ODI investigations
Office of Defects Investigation
81
Owner complaints
12 involved a crash · 2 a fire
NHTSA crash-test rating federal NCAP · out of 5 stars
Rollover★★★★

Owner complaints filed with NHTSA, by component

All 81 complaints on record, top 8 components.

Fuel System, Gasoline14
Vehicle Speed Control9
Tires8
Engine & Engine Cooling8
Suspension6
Air Bags4
Visibility4
Structure3

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 8 campaigns on record for this vehicle.

13E065000Fuel System, Gasoline:Delivery:Fuel PumpReported 29/11/2013

Airtex Products LP (Airtex) is recalling certain model E8598M, E8518M, E8600M, E8596M, and E8597M fuel pumps manufactured July 26, 2013, and July 29, 2013 and used as aftermarket replacements on Subaru Baja's, Outback's… Remedy: Airtex will notify owners, and will replace the fuel pump, free of charge. Recall is expected to begin on January 2, 2014. Customers may contact Airtex at 1-800-880-3056. The…

01V034000SeatsReported 07/02/2001

VEHICLE DESCRIPTION: PASSENGER VEHICLES EQUIPPED WITH MANUALLY-ADJUSTABLE (NON-POWERED) SEATS. CERTAIN INNER FRONT SLIDE RAIL LATCH MECHANISMS MAY HAVE BEEN IMPROPERLY WELDED. Remedy: DEALERS WILL REPLACE ONE OR BOTH FRONT SEAT INNER SLIDE RAILS. OWNER NOTIFICATION BEGAN MARCH 30, 2001. OWNERS WHO TAKE THEIR VEHICLES TO AN AUTHORIZED DEALER ON AN AGREED UPON…

Technical service bulletins NHTSA · verified

Showing 5 of 155 bulletins on record with NHTSA.

BulletinDateComponentSummary
Subaru Tech Tips (Article2025-11-20Unknown Or OtherSubaru service article locator.
Subaru Tech Tips (Article2025-11-20Unknown Or OtherSubaru service article locator.
15-130-08R2025-10-29Unknown Or OtherThis bulletin provides information on the load carrying capacity reduced label when a…
15-308-23R2025-10-28Electrical SystemThis Service Information Bulletin outlines a systematic procedure for diagnosing…
Subaru Tech Tips (Article2025-10-28Unknown Or OtherSubaru tech tips newsletter article locator.

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.

Reference guides

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

Frequently asked

How much oil does the 2001 Legacy 2.5L take?

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

Does the 2001 Legacy have open recalls?

NHTSA lists 8 recall campaign(s) for this model year. Check your specific vehicle by VIN.

What gas mileage does the 2.5L get?

EPA figures are 19 city / 25 highway / 21 combined mpg.