2021 HONDA INSIGHT Problems
Real NHTSA owner complaints for the 2021 Honda Insight. This model year has 23 NHTSA complaints — top issue: Forward Collision Avoidance: AEB.
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This page shows the model year's reputation. The VIN tells you about the specific car — accidents, title issues, odometer rollbacks, and open recalls.
Worst 2021 Honda Insight Problems
Top 3 most-reported issues with average mileage at failure.
Forward Collision Avoidance: AEB
Uncategorized Issues
Brake System
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This page shows the model year's reputation. The VIN tells you about this specific car — accidents, title issues, odometer fraud. Full report just $4.99 (vs. Carfax $44.99).
All Problems by Category
Every NHTSA complaint category for the 2021 Honda Insight. A single complaint may appear in multiple categories.
| Component | Complaints | Crashes | Fires | Avg Mileage | Volume |
|---|---|---|---|---|---|
| Forward Collision Avoidance: AEB | 8 | — | — | — | |
| Uncategorized Issues | 5 | — | — | — | |
| Brake System | 4 | — | — | — | |
| Seat-Related Issues | 3 | — | — | — | |
| Electrical Faults | 3 | — | — | — | |
| Airbag Malfunctions | 2 | 1 | — | — | |
| Structural Problems | 1 | — | — | — | |
| Fuel/Propulsion System | 1 | — | — | — | |
| Engine Problems | 1 | — | — | — | |
| Headlight/Taillight Failures | 1 | — | — | — | |
| Lane Departure | 1 | — | — | — | |
| Transmission / Drivetrain | 1 | — | — | — | |
| Unintended Acceleration | 1 | — | — | — |
Source: NHTSA Complaints Database. Complaint counts may exceed total complaints because one report can span multiple categories.
Search Owner Complaints
Read what owners actually reported to NHTSA for the 2021 Honda Insight. Type a keyword (e.g. “transmission”, “stalling”, “brakes”) to filter.
Showing 23 most recent complaints
There is a massive hood flutter when large vehicle drive towards me going above 50mph. It feels and looks like the hood is not latched correctly and going to open into my windshield. This has happened since I purchase the vehicle new in 2021
Went in for a typical servicing. They noted that the downstream O2 sensor was damaged by rodents. The vehicle, with around 14k has always been stored in a weather tight garage, never stored outside. There has been no rodents in the building since I owned it from 1999. This is…
I received a 2021 Insight Seat Weight Sensor Safety Recall in September 2025 saying that recall replacement parts were now available at Honda Dealers. Ever since I received this notice, none of the Atlanta area Honda dealers are able to remedy the defect in my vehicle due to lack…
Under certain circumstances, the portion of the PCU that controls charging of the 12 volt accessory battery malfunctions, sending the PCU into a "fail safe" mode, preventing battery charging and activating warning displays for the driver. This has caused my vehicle to stall while…
The brake servo control unit feel simulator which reduces the simulation force provided to the brake pedal during emergency or failed conditions and is a key component of realizing a Regenerative Braking System. It provides a good pedal feeling to a driver, improves energy recove…
While my wife was driving my car on a busy road. The servo brake control unit/ pedal simulator broke making it near impossible to stop the car. She had to crash the car into a parking block. And Honda import/export is uncooperative and dismissive of the fact that my wife and daug…
On two (2) occasions, the "collision mitigation braking system" braked with no reason. It has happened on a quiet and straight line residential street with no other moving vehicle, pedestrian, animal, or any other obstruction in view. After one second or so of braking, it retu…
On at least two occasions the automatic emergency braking system has activated with nothing in front of the vehicle. Several instances when cresting a steep rise in the road the forward collision warning system has activated the "BRAKE" warning light.
I am urging your immediate attention to a safety issue affecting the 2021 Honda Insight. The vehicle’s infotainment system, which controls key safety features including the Tire Pressure Monitoring System (TPMS), has failed. This malfunction prevents drivers from monitoring tire …
I received the "important safety recall" letter in March 2024 from the Honda Automobile Division regarding the seat weight sensor circuit board. The letter said that in a crash, the airbags could deploy in a dangerous fashion. I have called my Honda dealer three times since that…
Car emergency braking system engaged while there was nothing in front of the car. The automatic brakes were applied and the brake indicator flashed on the driver screen with no warning.
Summary American Honda Motor Co., Inc. (Honda) is recalling certain 2021 model year Insight vehicles. A capacitor in the printed circuit board of the front passenger seat weight sensor may crack and lead to an internal short circuit from the exposure to environmental humidity. S…
This has been happening with my two honda cads. I currently have Honda 2023 CRV and 2021 Honda Insight. the Collison Mitigation Braking System brakes really hard for no reason
I previously reported this issue to NHTSA and was given the case number [XXX]. Here is my recent letter to Honda. RE: Case #[XXX] (I was informed that this case was closed) Although I did not agree that the adaptive cruise control issue was resolved, Honda closed the referenced…
Intermittently the car’s forward collision warning will flash and occasionally start applying the brake without any other vehicles or obstacles in front of me.
driver side headlight failed. available for inspection upon request. can't drive without headlight on at nighttime or dark days. I haven't gone to dealer yet. not inspected by manufacturer yet. warning and message: headlight system problem. headlight performance may be reduced. …
Several times since purchasing this vehicle the blindspot warning has lighted when no vehicles are present. It has lighted while driving next to the k rail center barrier, driving in the middle lane of a 3 lane highway, also at night when no cars are around on a 2 lane road. It h…
Honda has a feature called "Traffic Sign Recognition System". With its mounted cameras the car is able to capture traffic signs while driving and display them on the dashboard. THE PROBLEM: the system is not very good at reading traffic signs and posts incorrect speed limits at …
The recent NHTSA disclosure of issues with Honda's driver-assistance technologies causes me to write about the troubling performance of adaptive cruise control on my 2021 Insight. When following another vehicle on controlled access highways, the system works fine. However if the …
I have had 6 times where the collision warning has slammed on the brakes when there is no vehicles on the road in front of me. This is very dangerous when vehicles are behind you. I'm afraid that this car is going to cause a reck and get me and my wife hurt. A device that is sup…
Source: NHTSA Complaints Database. Real owner reports for the 2021 Honda Insight.
Recalls for 2021 Honda Insight
2 campaignsNHTSA recall campaigns for the 2021 Honda Insight. Recalls are free to fix at any authorized dealer. Run a VIN check below to see if your specific vehicle has open recalls.
2021 Honda Insight — FAQ
Answers based on real NHTSA complaint and recall data for this specific model year.
Is the 2021 Honda Insight reliable?▾
Severe Issues. The 2021 Honda Insight has 23 NHTSA owner complaints, 1 crash-related, and 2 recall campaigns. The most reported issue is Forward Collision Avoidance: AEB (8 complaints). Source: NHTSA via VinSpector AI.
What are the most common problems with the 2021 Honda Insight?▾
#1: Forward Collision Avoidance: AEB (8 complaints). #2: Uncategorized Issues (5 complaints). #3: Brake System (4 complaints)
At what mileage do problems start on the 2021 Honda Insight?▾
Mileage data is not available or insufficient for this model year.
How safe is the 2021 Honda Insight?▾
The 2021 Honda Insight has 1 crash-related complaints and 0 fire reports out of 23 total NHTSA complaints. For NCAP lab crash test star ratings, visit nhtsa.gov/ratings.
Does the 2021 Honda Insight have any recalls?▾
Yes — 2 NHTSA recall campaigns affect the 2021 Honda Insight. The largest issue: ELECTRICAL SYSTEM:PROPULSION SYSTEM:DC/DC CONVERTER. Check nhtsa.gov/recalls or run a VIN check to see if your specific vehicle has open recalls.
Should I buy a 2021 Honda Insight?▾
The 2021 Honda Insight has severe issues — review the top problems before buying. Pay particular attention to Forward Collision Avoidance: AEB issues. Always run a VIN check on the specific car you're considering to check for accident history, open recalls, and title brands.
Source: NHTSA (National Highway Traffic Safety Administration) complaint and recall databases, aggregated by VinSpector AI.
Wider context: See the full Honda Insight reliability report with year-by-year comparison.
Check Your Specific 2021 Honda Insight
Real owner complaints tell you about the model. The VIN tells you about your specific car — accidents, title issues, odometer fraud. Full report just $4.99.