SubaruImpreza20012.5L/subaru/impreza/2001/2-5l/

2001 Subaru Impreza — 2.5L

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

Engine 2.5LTransmission Automatic 4-spd

The 2001 Subaru Impreza 2.5L combines a 2.5-liter engine with a 4-speed automatic transmission, requiring 4.2 quarts of 5W-30 API oil and returning an EPA-estimated 20/26/22 mpg (city/highway/combined). With just 11 owner complaints—primarily focused on tires—and two recalls, this model year sits favorably in the Impreza’s reliability timeline, especially when contrasted with the 300 complaints recorded for the 2002 model year.

Model year2001200019991998

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 economy20/26/22 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 · 520 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 · 520 CCAOEM · verified

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

TransmissionAutomatic 4-spd

Dimensions & weight NHTSA vPIC

Overall length172.4 in
Overall width67.3 in
Overall height55.5 in
Wheelbase99.2 in
Curb weight2820 lb
Track (front / rear)57.5 / 57.5 in
Weight distribution (front / rear)59/41

Ratings & economy EPA / vPIC

EPA city / highway / combined20 / 26 / 22 mpg
Drivetrain4-Wheel or All-Wheel Drive
Passenger volume84 cu ft
Cargo volume11 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.

7.8–7.9 sec0–60 mph (tested)quickest 7.80 sec — 2002 2.5RS Sedan
166 lb-ftTorque (as tested)
YearTrim / engine0–60¼ mileHPDrivetrain
20002.5RS Sedan 2.5L F-47.80 sec15.90 sec165 hpAWD
20022.5RS Sedan 2.5L F-47.80 sec16.10 sec165 hpAWD
20072.5i Sedan 2.5L F-47.90 sec16.00 sec173 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, 75W-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.

Lubricants & capacities

Brake FluidDOT 3
Differential Gear Oil75W-90 · GL-5
Differential Gear Oil Capacity1.7 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

Lug Nuts58-72 ft-lbs
Transfer Case Drain Plug17.0-20.0 ft-lbs
Front Wheel Hub137 ft-lbs
Rear Wheel Hub137 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 Capacity0.99-1.50 lbs
Oil GroupPAG
Oil Capacity4.90 oz
Standard BCI Group Number35
Standard BCI Cranking Performance520 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

Brake ApplicationWITH REAR DISC / WITH STANDARD
Torque Caliper to Bracket58 ft-lbs / 24-31 ft-lbs
Torque to Knuckle58 ft-lbs
Minimum Pad ThicknessFront: 0.295; Rear: 0.256 specification
Brake ApplicationWITH REAR DISC / WITH STANDARD
Rotor Runout Limit0.0029 in / 0.0028 in
Rotor Nominal Thickness From0.394 in / 0.945 in
Rotor Nominal Thickness To0.394 in / 0.945 in

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 miEngine Oil (drain & refill) · Engine Oil Filter (replace)
Every 7,500 miEngine Oil (drain & refill) · Engine Oil Filter (replace) · Tire & Wheel Assembly (rotate)
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 miSpark Plugs (replace) · Wheel 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 Impreza represents the end of the first-generation model run, and the federal data shows it sitting in a notably quiet trough before a dramatic escalation. Complaints dropped to 11 in 2001 from 42 in 2000, while TSBs continued climbing to 90 (up from 71), suggesting increasing dealer-level service bulletins even as consumer complaints waned. The following model year, 2002, registers an extreme spike with 300 complaints and 4 NHTSA investigations—roughly 27 times more complaints than 2001—indicating the next generation introduced significant new issues. For 2001 specifically, the top complaint areas were tires and service brakes/hydraulic (three complaints each), with five crash-related complaints and zero fire complaints on record. With only 2 recalls tied to this model year and no investigations, the 2001 Impreza appears to be a relatively stable specimen within its generation, predating the documented surge in problems that characterized 2002–2004. This makes it a comparatively favorable candidate within the early GC-generation Impreza range, though its 90 TSBs confirm it is not without accumulated complexity requiring inspection before purchase.

2
Open recalls
NHTSA campaigns
90
Service bulletins
Manufacturer communications
0
ODI investigations
Office of Defects Investigation
11
Owner complaints
5 involved a crash · 0 a fire

Owner complaints filed with NHTSA, by component

All 11 complaints on record, top 7 components.

Tires3
Service Brakes, Hydraulic3
Fuel/Propulsion System1
Steering,Air Bags1
Air Bags1
Electrical System1
Suspension1

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 3 campaigns on record for this vehicle.

08E050000Exterior Lighting:HeadlightsReported 11/08/2008

K2 MOTOR IS RECALLING 1,921 AFTERMARKET HEADLAMPS OF VARIOUS MODELS SOLD FOR USE ON THE ABOVE LISTED VEHICLES. THESE HEADLAMPS ARE MISSING THE AMBER SIDE REFLEX REFLECTOR WHICH FAILS TO CONFORM WITH THE REQUIREMENTS OF… Remedy: K2 MOTOR WILL NOTIFY OWNERS AND OFFER A FULL REFUND. THE RECALL BEGAN ON DECEMEBER 17, 2008. OWNERS MAY CONTACT K2 MOTOR AT 1-909-839-2992.

09E012000Exterior LightingReported 07/04/2009

SABERSPORT IS RECALLING 16,270 COMBINATION CORNER AND BUMPER LAMP ASSEMBLIES OF VARIOUS PART NUMBERS SOLD FOR USE AS AFTERMARKET EQUIPMENT FOR VARIOUS PASSENGER VEHICLES. THESE HEADLAMPS FAIL TO CONFORM TO THE… Remedy: SABERSPORT WILL NOTIFY OWNERS AND OFFER A FULL REFUND FOR THE NONCOMPLIANT COMBINATION LAMPS. THE SAFETY RECALL BEGAN ON MAY 11, 2009. OWNERS MAY CONTACT SABERSPORT AT…

Technical service bulletins NHTSA · verified

Showing 5 of 90 bulletins on record with NHTSA.

BulletinDateComponentSummary
SubaruNet Announcement2025-07-16Electrical SystemThis OTA is released to address Telematic functions that may stop working after a certain…
10-105-25R2025-07-10Electrical System"This bulletin announces the new procedure and Warranty Fail Code for FirstTime air…
SubaruNet Annoucement2025-06-27Unknown Or OtherThis announcment provides information on the release of the latest software updates to…
SubaruNet Announcement (S2025-06-24Unknown Or OtherThis announcement is to bring attention to the OTA for In-vehicle service appointment…
15-251-19R2025-06-24Electrical SystemThis Bulletin provides additional diagnostics to follow when addressing a…

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 Impreza. 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 Impreza 2.5L take?

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

Does the 2001 Impreza have open recalls?

NHTSA lists 2 recall campaign(s) for this model year. Check your specific vehicle by VIN.

What gas mileage does the 2.5L get?

EPA figures are 20 city / 26 highway / 22 combined mpg.