Owners have filed 32 complaints on the Toyota bZ4X, covering 2023–2025. The system named most often is Electrical System (10 reports). Worst years by volume: 2024, 2025, 2023; cleanest: 2023, 2025, 2024. 5 reports describe a crash. On average the car was 1.1 years old when the problem happened.
What breaks on Toyota bZ4X
Grouped by the system owners named — percentages are shares of all 32 bZ4X complaints. Open any row for the full reports in owners' own words.
Electrical System 10 Read
The vehicle experienced a sudden, catastrophic brake-by-wire system failure while operating in one-pedal driving (Regeneration Boost mode). While decelerating at a low speed behind an 18-wheeler semi-truck, the vehicle failed to continue slowing down. I immediately depressed the physical brake pedal, but the vehicle…
The front drive motor went out
The 12 volt battery does not maintain a charge. I have had it replaced twice. I purchased new January 2025; first battery replaced on March 20, 2025; second battery replaced August 13, 2025. I am currently having the same issue with the battery management system which controls temperature and battery usage. After…
Structure 5 Read
Left front fender and hood contacted upon going into a dip in the road durning road contruction performed by bituminous roadways, inc. Damage to fender and hood. Vehicle body and or frame wisted. Brought the vehicle to lamettry's in burnsville minnesota. They staed that the dip in the road may have caused this…
On [XXX], while driving through a common roadway puddle at a safe speed, the front bumper on my BZ4X detached from the undercarriage shield and tore away from the clips. This type of damage is clearly disproportionate to the conditions and reflects a deficiency in structural design. After researching this issue, I…
I was driving very slowly (5 to 10 MPH) through a rain storm on May 28th. The water rose to about 6 inches (fairly still, not rushing water), and I heard a loud and alarming noise under the car. I drove on for one block on a neighborhood street until I could get to higher ground. I discovered that the force of the…
Suspension 3 Read
A client states there is a knocking noise over un road more so from the rear wheels driving @ 10 MPH believes more so R/R wheel . They already fix two time , but still more knoking soung, the dealership service can not fix
Toyota bz4x 2025 ran 600 miles ony knocking noise over un road more so from the rear wheels driving 10 MPH
Premature and abnormal tire wear on my 2023 Toyota bZ4X, confirmed by two independent tire shops, despite consistent Toyota dealer maintenance every 6,000 miles. Beaverton Toyota dealer dismissed the condition as “normal,” but both [XXX] and Discount Tire documented unsafe tire wear caused by alignment. --- Details of…
Visibility 3 Read
What component or system failed or malfunctioned, and is it available for inspection upon request? The HVAC system, specifically the electric A/C compressor, has failed. The system produces a loud grinding/buzzing noise and has been diagnosed by authorized Toyota dealerships as requiring full compressor replacement.…
The contact owns a 2023 Toyota BZ4X. The contact stated that the vehicle was awaiting a recall repair. The dealer informed the contact that the electrical HVAC compressor needed to be replaced as part of the recall repair; however, the part was on back order. The vehicle was taken to the dealer, but the recall repair…
The contact owns a 2023 Toyota BZ4X. The contact had attempted to use the defroster; however, the blower was not blowing hot air onto the windshield. The contact had received notification of NHTSA Campaign Number: 25V577000 (Visibility); however, when the dealer was contacted to schedule a recall repair, the contact…
Steering 2 Read
While driving the road was wet the vehicle brake failure and the steering wheels stopped completely lost control of the vehicle and keep running over the curb and hit moving vehicle
Steering system, potentially related to electric power steering (EPS) or driver-assist systems (lane keeping or steering assist). While completing a routine right-hand turn, my husband began to straighten the steering wheel when the steering system suddenly and sharply turned further right without any driver input.…
Air Bags 1 Read
Driver sustained severe hand injuries due to airbag deployment while the hand was on the horn pad. Possible over-aggressive deployment or module failure. Incident occurred on [XXX], while driving a 2024 Toyota BZ4X (VIN: [XXX] ). Requesting formal investigation into the airbag system and front structural integrity of…
Power Train 1 Read
The contact owns a 2024 Toyota BZ4X. When pressing the accelerator toelerator pedal to go onto the freeway, the vehicle failed to accelerate and suddenly shifted to neutral. The contact would have to press the brake pedal, the contact would immediately shift the vehicle back to Drive and continue forward. While…
Vehicle Speed Control 1 Read
The car show on the screen a message in regards to the Adaptative Cruise Control Malfunction and it’s showing an orange sign light.. Another problem it’s in regards the AC.. It’s not working
bZ4X years to avoid — and the clean ones
Complaints per model year. More reports usually means more cars on the road as well as more trouble, so read the crash and fire columns alongside the count.
| Model year | Complaints | Top system | Crashes | Fires |
|---|---|---|---|---|
| 2025 | Electrical System,engine | 1 | — | |
| 2024 | Air Bags | 4 | — | |
| 2023 | Structure | — | — |
The same model year, different builds
Every complaint carries the first 11 characters of the VIN — plant, year, body and engine. That is a production series, and complaints are spread across them very unevenly.
| Measure | Value |
|---|---|
| Distinct production series | 20 |
| Average complaints per series | 1.6 |
| Worst single series | 3 complaints |
| Average age at failure | 1.1 years |
A model average of 1.6 hides a worst series at 3. Enter a VIN above to see the numbers for that exact build instead of the model as a whole.
Owners reported these. Find out if yours is one of them.
- Complaints matched to the exact production run, not just the model
- What the car is worth given what tends to fail on it
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How we count
Every figure here comes from complaints owners filed with NHTSA — 1,100,006 of them, covering 1,982 models built between 1981 and 2026.
A complaint is an unverified report: someone wrote down what happened to their car. It is not a confirmed defect and not a recall. What makes the volume useful is the pattern — when thousands of owners of the same build describe the same failure, that is a signal no marketing brochure will give you.
Two things we do that the source does not. First, we compute the age of the car at the moment of failure from the incident date and the model year. Second, we group complaints by the first 11 characters of the VIN — the production series — so a bad plant run does not disappear into a model-wide average.
Frequently asked questions
What are the worst years for the bZ4X?
By complaint volume, 2024, 2025, 2023 drew the most owner reports. Bear in mind that popular years put more cars on the road, so check the crash and fire columns too.
Which bZ4X years are the cleanest?
2023, 2025, 2024 have the fewest complaints on file. For recent years that can simply mean the cars are young.
How many complaints does the Toyota bZ4X have?
32 owner complaints filed with NHTSA, covering 2023–2025. Of those, 5 describe a crash and 0 a fire.
Are these complaints verified?
No. They are unverified reports from owners. NHTSA publishes them as filed and investigates only a fraction. The value is in the pattern, not in any single report.
Can I check complaints for one specific car?
Yes — enter its VIN above. We match the first 11 characters, which identify the plant, year, body and engine, so you get complaints on that exact production series rather than the whole model.