AutoUtility currently tracks 207 official NHTSA owner defect complaints for the 2021 Subaru Forester. Visibility, Wipers & Glass issues are the most frequently reported category, appearing in 90 complaints (43.5% of submitted records). Among these NHTSA complaint records, 16 filings cite a crash, 5 cite a fire, 5 report one or more injuries.

Key Problem Findings
  • Total NHTSA Complaints: 207 reports
  • #1 Reported Problem Area: Visibility, Wipers & Glass (90 reports • 43.5% of submitted complaints)
  • Secondary Problem Areas: Electrical System (33), Driver Assistance & Safety Tech (31)
  • Crash-Citing Complaints: 16 filings
  • Fire-Citing Complaints: 5 filings
  • Complaints Reporting Injuries / Fatalities: 5 injury filings • 0 fatality filings
Reporting Methodology: Statistics describe unverified consumer submissions voluntarily filed with NHTSA. Complaint volume is not normalized for vehicle sales volume or miles driven. Multiple components can be cited within a single owner complaint submission.
Total Complaints
207
Submitted to NHTSA ODI
Crash-Citing Complaints
16
Filings citing a collision
Fire-Citing Complaints
5
Filings citing smoke or fire
Complaints Reporting Injuries
5
Filings citing one or more injuries
Complaints Reporting Fatalities
0
Consumer filings citing fatalities

Most Reported Problems for 2021 Subaru Forester

Top automotive subsystem defect categories ranked by unique owner complaint volume in federal records

#1 Problem Area 43.5% of complaints

Visibility, Wipers & Glass

90 owner complaints submitted to NHTSA ODI
✓ 0 crashes or fires cited
#2 Problem Area 15.9% of complaints

Electrical System

33 owner complaints submitted to NHTSA ODI
⚠️ 1 crash report 🔥 1 fire report 🩹 1 injury report entry
#3 Problem Area 15% of complaints

Driver Assistance & Safety Tech

31 owner complaints submitted to NHTSA ODI
⚠️ 7 crash reports 🔥 1 fire report 🩹 2 injury report entries
#4 Problem Area 13.5% of complaints

Engine & Cooling

28 owner complaints submitted to NHTSA ODI
⚠️ 4 crash reports 🔥 1 fire report 🩹 6 injury report entries
#5 Problem Area 6.8% of complaints

Powertrain & Transmission

14 owner complaints submitted to NHTSA ODI
⚠️ 5 crash reports 🩹 4 injury report entries
Domain Share Note: Share percentage represents the proportion of unique complaint filings referencing each vehicle system. Because single complaints may cite multiple systems (such as engine and electrical simultaneously), domain percentages represent individual category incidence and may sum to over 100%.

Symptoms Mentioned in NHTSA Owner Reports for 2021 Subaru Forester

Specific mechanical, electrical, and driver-assist defect symptoms identified via deterministic narrative analysis

AutoUtility uses deterministic phrase matching to identify recurring symptom descriptions within consumer-submitted NHTSA complaint narratives.

Driver Assistance & Safety Tech 2.4% of complaints

Unintended / Sudden Acceleration

5 complaint narratives describe this symptom
Visibility, Wipers & Glass 2.4% of complaints

Windshield Stress / Spontaneous Cracking

5 complaint narratives describe this symptom
Symptom Identification Method: A complaint may describe more than one symptom, so percentages may sum to more than 100%. Symptom identification reflects text contained in consumer-submitted complaint records and does not establish a confirmed mechanical diagnosis.

Recent NHTSA Owner Reports for 2021 Subaru Forester

Representative defect filings submitted by owners to the NHTSA Office of Defects Investigation

Electrical System NHTSA ODI ID: #11748908
Filed: 07/07/2026

"The contact owns a 2021 Subaru Forester. The contact stated that while trying to roll up vehicle windows from driver sits and passenger sit they would roll up to 3/4th all the way up and they would roll back down after. The contact stated this was a recurring event. The dealer was aware of failure..."

Incident Date: 06/15/2026 • Raw NHTSA Component: ELECTRICAL SYSTEM
Powertrain & Transmission NHTSA ODI ID: #11748058
Filed: 07/02/2026

"My 2021 Subaru Forester has a recurring, worsening defect in the Idle Stop/Start (ISS) system that creates a stalling hazard. When ISS shuts the engine off at a stop, the engine intermittently fails to restart when I try to move again. It cranks progressively slower, warning lights illuminate, a..."

Incident Date: 07/01/2026 • Raw NHTSA Component: POWER TRAIN,ELECTRICAL SYSTEM,ENGINE
Electrical System NHTSA ODI ID: #11744837
Filed: 06/17/2026

"Persistent Battery Drain on a 2021 Subaru Forester Limited. Problems began in year 4 of ownership (~17,000 mileage), after Subaru Starlink Subscription services expired. Red (Error) Starlink SOS indicator light was evident, where a normal light would show green. Battery would fully drain after..."

Incident Date: 10/24/2025 • Raw NHTSA Component: ELECTRICAL SYSTEM
Electrical System NHTSA ODI ID: #11743852
Filed: 06/13/2026

"Driving along and various system warnings came on, then started losing power, then the engine died and the car was completely dead. Got a jump start and the car ran for a couple of minutes and died again. Had it towed to a repair shop and when they checked it the next morning, they couldn't find a..."

Incident Date: 03/10/2026 • Raw NHTSA Component: ELECTRICAL SYSTEM
Electrical System NHTSA ODI ID: #11741788
Filed: 06/03/2026

"2021 Subaru Forester The vehicle has experienced recurring electrical and battery-related issues for several years. The original battery was replaced by the Subaru dealer with a larger-capacity battery because of repeated starting concerns. The replacement provided only temporary improvement. The..."

Incident Date: 06/03/2026 • Raw NHTSA Component: ELECTRICAL SYSTEM
Consumer Narrative Notice: Excerpts are sanitized text descriptions submitted by vehicle owners to the federal ODI database. They reflect the reporting consumer's observations at the time of filing and have not been independently confirmed by vehicle manufacturers or government investigators.

Complaint History for Subaru Forester

Reported defect complaint volume across sibling model years (2015–2026)

Model Year NHTSA Complaints Crash Reports Safety Recalls Detailed Report
2015 Subaru Forester 613 53 3 View 2015 Problems →
2016 Subaru Forester 410 39 3 View 2016 Problems →
2017 Subaru Forester 582 39 1 View 2017 Problems →
2018 Subaru Forester 492 26 3 View 2018 Problems →
2019 Subaru Forester 832 36 3 View 2019 Problems →
2020 Subaru Forester 596 26 0 View 2020 Problems →
2021 Subaru Forester Current Page 207 16 0 Current
2022 Subaru Forester 96 8 1 View 2022 Problems →
2023 Subaru Forester 73 8 1 View 2023 Problems →
2024 Subaru Forester 29 4 2 View 2024 Problems →
2025 Subaru Forester 90 11 4 View 2025 Problems →
2026 Subaru Forester 0 0 3 View 2026 Problems →
Comparative Disclaimer: Complaint totals are unadjusted historical counts and are not normalized for vehicles sold, active fleet size, or total road mileage. Newer model years naturally have had less calendar exposure time to accumulate owner filings.

Detailed NHTSA Component Breakdown for 2021 Subaru Forester

Complete distribution of consumer defect reports across all 56 granular NHTSA system and subsystem classifications

Vehicle Component / System Total Complaints Crash Reports Fire Reports Reported Injury Entries Reported Fatality Entries
Visibility & Wipers NHTSA category: VISIBILITY/WIPER 67 0 0 0 0
Other / Uncategorized NHTSA category: UNKNOWN OR OTHER 20 2 1 0 0
Electrical System NHTSA category: ELECTRICAL SYSTEM 16 0 0 0 0
Visibility / Glass NHTSA category: VISIBILITY 13 0 0 0 0
Engine NHTSA category: ENGINE 11 1 1 1 0
Vehicle Speed Control NHTSA category: VEHICLE SPEED CONTROL 6 3 0 0 0
Powertrain NHTSA category: POWER TRAIN 5 2 0 0 0
ELECTRICAL SYSTEM,UNKNOWN OR OTHER,ENGINE 4 0 0 0 0
Suspension NHTSA category: SUSPENSION 4 0 0 0 0
ELECTRICAL SYSTEM,UNKNOWN OR OTHER 3 0 0 0 0
Forward Collision Avoidance NHTSA category: FORWARD COLLISION AVOIDANCE 3 0 0 0 0
POWER TRAIN,ENGINE 3 1 0 4 0
UNKNOWN OR OTHER,VISIBILITY/WIPER 3 0 0 0 0
ELECTRICAL SYSTEM,ENGINE 2 0 0 0 0
ENGINE,FUEL/PROPULSION SYSTEM 2 0 1 0 0
Service Brakes NHTSA category: SERVICE BRAKES 2 0 0 0 0
SERVICE BRAKES,FORWARD COLLISION AVOIDANCE 2 0 0 0 0
Structure & Body NHTSA category: STRUCTURE 2 0 0 0 0
UNKNOWN OR OTHER,FORWARD COLLISION AVOIDANCE 2 0 0 0 0
Air Bags NHTSA category: AIR BAGS 1 1 0 0 0
AIR BAGS,VEHICLE SPEED CONTROL,FUEL/PROPULSION SYSTEM 1 1 0 0 0
Back Over Prevention / Camera NHTSA category: BACK OVER PREVENTION 1 0 0 0 0
CHEST CLIP, BUCKLE, HARNESS 1 0 0 0 0
ELECTRICAL SYSTEM,SEATS,ENGINE 1 0 0 0 0
ELECTRICAL SYSTEM,UNKNOWN OR OTHER,FORWARD COLLISION AVOIDANCE 1 0 1 0 0
ELECTRICAL SYSTEM,UNKNOWN OR OTHER,SERVICE BRAKES 1 1 0 1 0
ELECTRICAL SYSTEM,VEHICLE SPEED CONTROL,UNKNOWN OR OTHER 1 0 0 0 0
ELECTRICAL SYSTEM,VISIBILITY/WIPER,FORWARD COLLISION AVOIDANCE 1 0 0 0 0
ENGINE,FORWARD COLLISION AVOIDANCE 1 0 0 0 0
ENGINE,POWER TRAIN 1 0 0 0 0
EXTERIOR LIGHTING 1 0 0 0 0
FORWARD COLLISION AVOIDANCE,LANE DEPARTURE 1 0 0 0 0
Lane Departure Warning NHTSA category: LANE DEPARTURE 1 0 0 0 0
LANE DEPARTURE,BACK OVER PREVENTION,FORWARD COLLISION AVOIDANCE 1 0 0 0 0
LANE DEPARTURE,FORWARD COLLISION AVOIDANCE 1 0 0 0 0
POWER TRAIN,ELECTRICAL SYSTEM,ENGINE 1 0 0 0 0
POWER TRAIN,ENGINE,FUEL/PROPULSION SYSTEM 1 0 0 0 0
POWER TRAIN,SERVICE BRAKES 1 1 0 0 0
POWER TRAIN,VEHICLE SPEED CONTROL,ENGINE 1 1 0 0 0
POWER TRAIN,VISIBILITY/WIPER 1 0 0 0 0
STEERING,ELECTRICAL SYSTEM 1 0 0 0 0
STEERING,ELECTRICAL SYSTEM,ENGINE 1 0 0 0 0
STEERING,LANE DEPARTURE 1 1 0 1 0
STRUCTURE,VISIBILITY/WIPER 1 0 0 0 0
Tires NHTSA category: TIRES 1 0 0 0 0
UNKNOWN OR OTHER,ENGINE 1 0 0 0 0
UNKNOWN OR OTHER,ENGINE,FUEL/PROPULSION SYSTEM 1 0 1 0 0
UNKNOWN OR OTHER,FUEL/PROPULSION SYSTEM,VISIBILITY/WIPER 1 0 0 0 0
UNKNOWN OR OTHER,LANE DEPARTURE,FORWARD COLLISION AVOIDANCE 1 0 0 0 0
UNKNOWN OR OTHER,VISIBILITY 1 0 0 0 0
VEHICLE SPEED CONTROL,LANE DEPARTURE,FORWARD COLLISION AVOIDANCE 1 0 0 0 0
VEHICLE SPEED CONTROL,SERVICE BRAKES,ENGINE 1 1 0 1 0
VEHICLE SPEED CONTROL,UNKNOWN OR OTHER 1 0 0 0 0
VISIBILITY/WIPER,FORWARD COLLISION AVOIDANCE 1 0 0 0 0
VISIBILITY/WIPER,LANE DEPARTURE,FORWARD COLLISION AVOIDANCE 1 0 0 0 0
Wheels & Hubs NHTSA category: WHEELS 1 0 0 0 0
Data Attribution & Reporting Methodology: Complaints are unverified voluntary submissions to the NHTSA Office of Defects Investigation (ODI). Because multiple vehicle components can be cited within a single owner complaint submission, component-level rollups may sum to more than the unique complaint count (207). Injury and fatality entries in the detailed table reflect raw values entered by reporting consumers across individual submissions; they are not deduplicated casualty statistics and may include duplicate or unverified entries. Complaint volume is not normalized for sales volume or vehicle mileage and does not represent an audited component failure rate.
Official US Government Data Provenance

The complaint records on this page are retrieved directly from the NHTSA Office of Defects Investigation (ODI) public database.

Local Production Store Compiled: August 2026 • Deterministic Audited Dataset • Zero Dynamic External API Runtime Latency.