SubaruOutback20012.5L/subaru/outback/2001/2-5l/

2001 Subaru Outback — 2.5L

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

Engine 2.5L

The 2001 Subaru Outback 2.5L pairs its 2.5-liter engine with a service specification of 4.2 quarts of 5W-30 API oil, while field data records four recalls and 170 owner complaints. Set against the model’s 1995–2026 complaint history—a spectrum running from a low of two entries to a high of 1,029 in 2019—this volume places the 2001 model year in the lower range of reported issues. That relative standing marks it as a comparatively quiet chapter in the lineage, predating the significant escalation seen in later years.

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

Fitment & sizes

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

From the factory this vehicle uses a BCI 35 · 430 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 · 430 CCAOEM · verified

Full specifications

Engine, drivetrain, dimensions and economy.

Dimensions & weight NHTSA vPIC

Overall length172.4 in
Overall width67.3 in
Overall height59.1 in
Wheelbase99.2 in
Curb weight2859 lb
Track (front / rear)57.5 / 57.5 in

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, 75W-90 · 80W-90 · GL-5 in the differential, DOT 3 brake fluid. The firing order is 1-6-3-2-5-4.

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 Capacity4.2 qt
Power Steering FluidATF
Transfer Case Fluid80W-90 · GL-5

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

Transfer Case Drain Plug17.0-20.0 ft-lbs
Front Wheel Hub162 ft-lbs
Rear Wheel Hub174 ft-lbs

Ignition

Cylinder Firing Order1-3-4-2
Cylinder Firing Order1-6-3-2-5-4
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

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 Performance430 cca
Standard BCI Group Number35
Standard BCI Cranking Performance490 cca

Service checks

Pressure Test23 psi
Radiator Cap Pressure Relief14-18 psi
Thermostat Opening Temperature169-183 °F
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)
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 Subaru Outback sits at an interesting inflection point in its generation's federal record. Complaints peaked the prior year at 215 in 2000, then declined to 170 for 2001 and continued downward to 153 in 2002 and 95 in 2003, placing the target year on the downslope of a clear complaint trend. However, recalls moved in the opposite direction—rising from 2 in 2000 to 4 in 2001 and 5 in 2002, then spiking to 15 in 2003—while TSBs nearly doubled from 76 in 2000 to 120 in 2001 and kept climbing to 133 and 191 in subsequent years, suggesting Subaru was increasingly addressing emerging issues through official service channels rather than leaving owners to file complaints. The 2001 model's top complaint areas—Fuel System Gasoline (23), Service Brakes Hydraulic (22), Power Train (22), and Engine & Engine Cooling (14)—are distributed fairly evenly with no single dominant failure mode, and the 16 crash complaints and 4 fire complaints are notable but not exceptional given the complaint volume. The data does not specify root causes for any of these areas. For a buyer, 2001 represents a transitional year: complaints are declining from the 2000 peak and TSB coverage is expanding rapidly, but recall activity is accelerating and the complaint count remains elevated compared to the quieter 2003–2004 tail of the generation, making it a marginal purchase—acceptable if priced well and with service records confirming TSB-related repairs, but 2003 or 2004 are measurably calmer alternatives in this generation.

4
Open recalls
NHTSA campaigns
120
Service bulletins
Manufacturer communications
0
ODI investigations
Office of Defects Investigation
170
Owner complaints
16 involved a crash · 4 a fire

Owner complaints filed with NHTSA, by component

All 170 complaints on record, top 8 components.

Fuel System, Gasoline23
Service Brakes, Hydraulic22
Power Train22
Engine & Engine Cooling14
Vehicle Speed Control13
Suspension11
Tires9
Suspension,Structure7

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 4 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…

04V128000Vehicle Speed Control:CablesReported 16/03/2004

ON CERTAIN PASSENGER SEDANS, WAGONS, AND SPORT UTILITY VEHICLES, THE CRUISE CONTROL CABLE COULD COME OUT OF ITS TRACK ON THE CRUISE CONTROL LEVER AND LODGE ON THE CONTROL LEVER TAB WHEN THE ACCELERATOR PEDAL IS… Remedy: DEALERS WILL INSTALL A CRUISE CONTROL CABLE RETAINING CLIP TO THE CRUISE CONTROL LEVER TAB ON THE THROTTLE SHAFT IN ORDER TO PREVENT THE CRUISE CONTROL CABLE FROM COMING OUT OF…

Technical service bulletins NHTSA · verified

Showing 5 of 120 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

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VIN
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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 Outback 2.5L take?

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

Does the 2001 Outback have open recalls?

NHTSA lists 4 recall campaign(s) for this model year. Check your specific vehicle by VIN.