2021 Subaru Impreza Service and Repair Manual

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Covers all 2021 Impreza trims — Touring Hatchback 4-Door, Premium Sedan 4-Door, Convenience Hatchback 4-Door +8 more ·
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2021 Subaru Impreza service and repair manual — a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.

Designed for technicians and DIY owners, this manual helps you diagnose issues correctly, follow proven repair steps, and use wiring diagrams and system sections to track faults faster.

What’s included

  • Step-by-step repair procedures and service information
  • Specifications and reference data (where provided)
  • Electrical diagnostics with wiring diagrams
  • Coverage across major systems: engine, transmission/driveline, brakes, steering, suspension, HVAC, and more

Trims covered

  • Touring Hatchback 4-Door
  • Premium Sedan 4-Door
  • Convenience Hatchback 4-Door
  • Base Sedan 4-Door
  • Sport-tech Sedan 4-Door
  • Base Hatchback 4-Door
  • Premium Hatchback 4-Door
  • Touring Sedan 4-Door
  • Sport-tech Hatchback 4-Door
  • Limited Hatchback 4-Door
  • Convenience Sedan 4-Door
  • Sport Sedan 4-Door
  • Sport Hatchback 4-Door
  • Limited Sedan 4-Door

Engines covered

  • 2.0L 1995CC H4 GAS DOHC Naturally Aspirated

Index / Table of contents

  • Body
  • Brakes
  • Chassis Electrical
  • Driveline
  • Engine Cooling
  • Engine Electrical
  • Engine Mechanical
  • Engine Performance & Emission Controls
  • Fuel System
  • General Information & Identification
  • Heating, Ventilation, & Air Conditioning
  • Hybrid & Electric Vehicle Systems
  • Steering
  • Suspension
  • Transmission, Clutch, & Transfer Case
  • Wiring Diagrams
NHTSA #21V67500030/08/2021Component: SUSPENSION:FRONT:CONTROL ARM:LOWER ARM

Subaru of America, Inc. (Subaru) is recalling certain 2021 Impreza vehicles. The left-front lower control arm weld may fail, allowing the control arm to separate from the crossmember.

Consequence

A separated control arm may cause the tire to contact the wheel well, resulting in a loss of control

Remedy

Owners are advised not to drive their vehicle until the repair is complete. Dealers will inspect an

NHTSA #21V02400026/01/2021Component: POWER TRAIN:SHIFT LINKAGE/CABLE/ROD

Subaru of America, Inc. (Subaru) is recalling certain 2021 Outback and Impreza vehicles. The continuously variable transmission (CVT) select lever cable nut may not have been tightened properly, allo

Consequence

A loose nut can lead to a lost of retention in the CVT select lever cable and the gear selector not

Remedy

Subaru will notify owners, and dealers will inspect, and, if necessary, tighten the nut, free of cha

TSB #11033069

This bulletin contains additional information for recommended materials listed in the Service Manuals for individual models.

TSB #11033065

This bulletin provides updated parts information and a service procedure to follow for removing accumulated carbon deposits from fuel injectors and internal engine components (e.g. intake valves and / or manifold, and combustion chambers).

TSB #11033063

This bulletin announces a design change made to the CVT Control Valve Body which incorporates an enhanced valve sleeve to improve durability.

TSB #11033056

This announcement provides information on the remanufactured CVT transmission program.

TSB #11033051

This bulletin announces the diagnostic procedures to be used when DTCs B1571(REFERENCE CODE INCOMPATIBILITY IMMOBILIZER CM TO ECM) and B1572(IMM CIRCUIT EXCEPT ANTENNA CIRCUIT) are detected by Keyless Access with Push Button Start(KACM).

TSB #11032040

This bulletin announces the service manual correction regarding clutch master cylinder reservoir service procedures.

TSB #11032039

This bulletin contains additional information for recommended materials listed in the Service Manuals for individual models.

TSB #11032035

This Bulletin provides the diagnostic procedures to be followed when addressing customer concerns of steering wheel/vehicle body vibration when driving at highway speeds when tire/wheel balance is suspected.

Showing the 8 most recent of 297 technical service bulletins on file with NHTSA.

20240910Component: AIR BAGSCrash reported1 injured

The contact owned a 2021 Subaru Impreza. The contact stated that while stopped at a red light, another vehicle crashed into the rear of the vehicle. The force of the impact caused the contact to hit a

20230407Component: FORWARD COLLISION AVOIDANCE: WARNINGS

The Eye Sight front collision warning did a hard brake going 55 mph when a car was well ahead of me slowing down to turn right. I was almost rear ended by the car behind me. This isn't the first time

20230326Component: UNKNOWN OR OTHER

Went to my car this morning and the windshield was cracked on the top center from the edge of the windshield to around where the rear view mirror is. This crack was not there last night when I parked

20221125Component: VISIBILITY/WIPER

Plastic parts of side mirror melt easily by heat and sunlight. (Not only side mirror, but also other components with the same plastic parts) It bothers driver visibility and safety when driving highwa

20221030Component: SERVICE BRAKES

Vehicle is at 23520 miles, front brake pads are worn to 1mm on passenger side and 2mm on front driver side. Vehicle had been taken on October 04, 2022 for repairs and local Subaru dealer refuses to re

Showing the 5 most serious of 19 complaints filed with NHTSA.

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