RoadVitals

2021 Acura ILX Problems

Owner-reported complaints filed with NHTSA, grouped by component

Data refreshed

Owner complaintsComplaints are reports submitted to NHTSA by owners and drivers. NHTSA does not verify most reports before publishing them, and a complaint does not establish that a defect exists. Volume is influenced by how many of a vehicle were sold, how long it has been on the road, and how much attention an issue has received.
11
Latest Mar 20, 2026
Components namedHow many of our component categories appear on at least one report for this model year. One report can name several.
7
Crash or fire reportedComplaints whose submitter recorded that a crash or a fire occurred. These are the reporter's own answers on the NHTSA form, not verified findings.
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What this page shows

Everything below is an owner-reported complaint submitted to NHTSA about the 2021 Acura ILX, grouped by the component NHTSA recorded on the report. These are not confirmed defects, and they are not recalls. NHTSA does not verify most reports before publishing them, and a category with more reports in it is not evidence that a part is defective.

Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.

Reports by component

Ranked by how many owner reports name each component category

  • Driver assistance430.8%
  • Exterior lighting323.1%
  • Airbags215.4%
  • Electrical17.7%
  • Seat belts17.7%
  • Suspension17.7%
  • Visibility17.7%

Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.

Each component in detail

What the reports in each category say, in the owners' own words

Driver assistance

Reports naming forward-collision avoidance, lane keeping, back-over prevention, cruise control and related electronic driver-assistance systems.

4
reports

From owner reports, verbatim

I am reporting a severe and hazardous safety defect in my 2021 Acura ILX involving water intrusion into the headlight assembly, resulting in electrical failure of critical lighting and signaling components. Due to an apparent manufacturing defect in the headlight sealing, moisture is entering the housing and is visibly present as condensation, directly causing system malfunction. This defect leads to intermittent and unpredictable failure of the turn signal (blinker), including failure to activate and spontaneous activation without driver input. As a result, surrounding drivers cannot accurately determine my intended movements, significantly increasing the risk of a collision. Additionally, the headlight intermittently dims or shuts off at night, creating dangerously reduced visibility and unsafe driving conditions. The defect also compromises essential driver-assist safety systems, including blind spot monitoring and lane departure warning, which rely on consistent visibility and signaling. When these systems are impaired, the risk of unsafe lane changes and crashes is substantially elevated. The issue is ongoing, reproducible, and worsens with normal environmental exposure such as rain or humidity. There were no prior warnings. The failure began with visible condensation and has progressed into repeated electrical malfunction affecting multiple safety-related systems. This is a failure of federally required safety equipment, not a cosmetic issue. Loss of lighting, signaling, and safety system reliability presents a clear and unacceptable risk of crash, injury, or fatality. This defect does not appear isolated and may indicate a systemic manufacturing or design failure. Immediate investigation is necessary, and recall action is warranted to prevent further harm to drivers and the public.

NHTSA ID 11725735 · filed Mar 20, 2026

am reporting a serious safety defect in my 2021 Acura ILX involving the front headlight assembly. Water is entering the headlight housing due to what appears to be a manufacturer sealing defect, with visible condensation inside. This is causing electrical malfunction, including intermittent failure of the turn signal (blinker) and inconsistent headlight operation. The components are available for inspection upon request. This defect creates a significant safety hazard. The turn signal will fail to activate or activate randomly, preventing other drivers from knowing when I am changing lanes and increasing the risk of collisions. The headlight also intermittently dims or shuts off at night, reducing visibility and creating dangerous driving conditions. This issue also affects driver-assist safety systems, including blind spot monitoring and lane departure warning, which rely on proper signaling and visibility. When the lighting system malfunctions, these systems are less effective, increasing the risk of unsafe lane changes. The problem is ongoing and reproducible, especially after exposure to moisture. The malfunction occurs intermittently but frequently enough to make the vehicle unsafe. The vehicle has not yet been formally inspected, but inspection is being pursued. There were no warning lights prior to failure. The first symptom was condensation inside the headlight, followed by increasing failure of the blinker and headlight. This does not appear to be an isolated issue and may indicate a broader manufacturing defect. Because this directly impacts visibility and signaling, it is a critical safety concern. This issue should be urgently investigated for a recall to prevent accidents, injuries, or fatalities.

NHTSA ID 11725734 · filed Mar 20, 2026

Too few reports in this category for a page of its own — they appear in the full complaint list.

Exterior lighting

Reports naming headlights, tail lights, turn signals and other exterior lighting.

3
reports

From owner reports, verbatim

I am reporting a severe and hazardous safety defect in my 2021 Acura ILX involving water intrusion into the headlight assembly, resulting in electrical failure of critical lighting and signaling components. Due to an apparent manufacturing defect in the headlight sealing, moisture is entering the housing and is visibly present as condensation, directly causing system malfunction. This defect leads to intermittent and unpredictable failure of the turn signal (blinker), including failure to activate and spontaneous activation without driver input. As a result, surrounding drivers cannot accurately determine my intended movements, significantly increasing the risk of a collision. Additionally, the headlight intermittently dims or shuts off at night, creating dangerously reduced visibility and unsafe driving conditions. The defect also compromises essential driver-assist safety systems, including blind spot monitoring and lane departure warning, which rely on consistent visibility and signaling. When these systems are impaired, the risk of unsafe lane changes and crashes is substantially elevated. The issue is ongoing, reproducible, and worsens with normal environmental exposure such as rain or humidity. There were no prior warnings. The failure began with visible condensation and has progressed into repeated electrical malfunction affecting multiple safety-related systems. This is a failure of federally required safety equipment, not a cosmetic issue. Loss of lighting, signaling, and safety system reliability presents a clear and unacceptable risk of crash, injury, or fatality. This defect does not appear isolated and may indicate a systemic manufacturing or design failure. Immediate investigation is necessary, and recall action is warranted to prevent further harm to drivers and the public.

NHTSA ID 11725735 · filed Mar 20, 2026

am reporting a serious safety defect in my 2021 Acura ILX involving the front headlight assembly. Water is entering the headlight housing due to what appears to be a manufacturer sealing defect, with visible condensation inside. This is causing electrical malfunction, including intermittent failure of the turn signal (blinker) and inconsistent headlight operation. The components are available for inspection upon request. This defect creates a significant safety hazard. The turn signal will fail to activate or activate randomly, preventing other drivers from knowing when I am changing lanes and increasing the risk of collisions. The headlight also intermittently dims or shuts off at night, reducing visibility and creating dangerous driving conditions. This issue also affects driver-assist safety systems, including blind spot monitoring and lane departure warning, which rely on proper signaling and visibility. When the lighting system malfunctions, these systems are less effective, increasing the risk of unsafe lane changes. The problem is ongoing and reproducible, especially after exposure to moisture. The malfunction occurs intermittently but frequently enough to make the vehicle unsafe. The vehicle has not yet been formally inspected, but inspection is being pursued. There were no warning lights prior to failure. The first symptom was condensation inside the headlight, followed by increasing failure of the blinker and headlight. This does not appear to be an isolated issue and may indicate a broader manufacturing defect. Because this directly impacts visibility and signaling, it is a critical safety concern. This issue should be urgently investigated for a recall to prevent accidents, injuries, or fatalities.

NHTSA ID 11725734 · filed Mar 20, 2026

Too few reports in this category for a page of its own — they appear in the full complaint list.

Airbags

Reports naming the air-bag system — deployment behaviour, inflators, sensors and warning lights.

2
reports

From owner reports, verbatim

I am submitting this complaint regarding a 2021 Acura ILX (VIN: [XXX] ) that has been unreleasable for an extended period due to manufacturer inability to supply a required safety component. The vehicle was involved in an accident on July 6, 2025 and delivered to Caliber Collision in Corpus Christi, Texas. All accident-related repairs have been completed. However, the vehicle cannot be released because a required airbag and/or airbag module is unavailable. American Honda Motor Company, Inc. has advised that the safety component is unavailable to be sold and that no estimated time of availability exists. Due to the safety nature of the missing component, the repair facility has confirmed the vehicle cannot be legally or safely released. The delay is no longer accident-related and is solely due to manufacturer unavailability of a safety-critical, non-cosmetic part. I have requested interim solutions including buyback, rental assistance, or a dealership loaner, and no temporary or permanent solution has been provided. This complaint is submitted to document manufacturer inability to supply a required safety component resulting in extended loss of vehicle use. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID 11706024 · filed Dec 19, 2025

The contact owns a 2021 Acura ILX. The contact stated while attempting to park the vehicle, the airbag deployed without impact which resulted in the contact crashing into a pole. The contact sustained a hurt knee and headaches that required medical treatment. The vehicle was towed to a local dealer where it was awaiting repairs. The contact stated no warning lights were illuminated. The manufacturer was informed of failure and was awaiting a response. The failure mileage was approximately 2,000.

NHTSA ID 11447356 · filed Jan 13, 2022

Too few reports in this category for a page of its own — they appear in the full complaint list.

Electrical

Reports naming the electrical system — wiring, battery, charging, control modules, infotainment and electrical accessories.

1
report

From owner reports, verbatim

Electrical Failure. Safety was an issue with vehicle needing constant jumps. Problem was checked at dealer. My concern was continuously overlooked. Warning lamps didn't warn.

NHTSA ID 11498700 · filed Dec 23, 2022

Too few reports in this category for a page of its own — they appear in the full complaint list.

Seat belts

Reports naming seat belts, buckles, retractors and pretensioners.

1
report

From owner reports, verbatim

The contact owns a 2021 Acura ILX. The contact stated that after entering the vehicle, he became aware that the driver's seat belt was stuck and would not uncoil. No warning lights were illuminated. The vehicle was taken to an independent mechanic, who diagnosed a failure with the seat belt assembly. The vehicle was not repaired. The manufacturer was notified of the failure but provided no assistance. The failure mileage was unknown.

NHTSA ID 11547853 · filed Oct 2, 2023

Too few reports in this category for a page of its own — they appear in the full complaint list.

Suspension

Reports naming suspension components — springs, struts, shocks, control arms and related hardware.

1
report

From owner reports, verbatim

It is Acura ILX 2021. The current mileage is 17,480. What component or system failed or malfunctioned, and is it available for inspection upon request? *Driveshaft/suspension is broken after inspection. How was your safety or the safety of others put at risk? *Intense shaking coming from underneath the vehicle. Worn out u-joints, couplers or carrier bearings can cause the driveshaft to vibrate and make noise when passing over bumps and potholes. If not fixed, it can lead to further damage to other drivetrain components. Has the problem been reproduced or confirmed by a dealer or independent service center? * Not sure for 2021 model. However, there is a recall history for model 2016-2019 Acura ILX. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? * The vehicle was inspected and waiting for remedy. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? * No there is no sign of warning. Due to extreme noise, the vehicle was inspected.

NHTSA ID 11551027 · filed Oct 20, 2023

Too few reports in this category for a page of its own — they appear in the full complaint list.

Visibility

Reports naming windshields, glass, wipers, defrosters and mirrors.

1
report

From owner reports, verbatim

The contact owns a 2021 Acura ILX. The contact stated that while driving at an undisclosed speed, he became aware that the white lines on the road appeared curved through the windshield. The contact then noticed that the windshield was distorted. The vehicle was taken to the dealer, where the contact was informed that the windshield was delaminating and needed to be replaced. The windshield was replaced under warranty; however, the replacement windshield was also defective. The vehicle was not repaired. The dealer referred the contact to the manufacturer. The manufacturer was notified of the failure. The contact was awaiting a call back from the manufacturer. The failure mileage was approximately 9,600.

NHTSA ID 11574756 · filed Feb 29, 2024

Too few reports in this category for a page of its own — they appear in the full complaint list.

Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.

Elsewhere on this vehicle

Data sources

Data on this page last refreshed .