bZ4X (1st)
Reliability Score
Complaints by Engine Code
1YM Motor
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Complaint Breakdown
Show 1 additional engine variant with limited data
Toyota bZ4X Unidentified Engine
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Complaint Breakdown
Battery & Propulsion Reliability
Battery Electric (BEV)
Battery & propulsion complaint analysis for the 2023-2025 Toyota bZ4X
Too few field reports to rate this generation against peers yet. Most recently launched models accumulate complaints over the first 2-3 years.
What kind of battery complaint?
Among the 9 battery-related complaints, here's the type mix. These percentages describe what the complaints are about — not how reliable the vehicle is overall.
Low-voltage battery deaths, common on EVs and hybrids that use a 12V for accessories.
Propulsion battery defects, capacity loss, BMS faults, replacement claims.
Loss of power, drive unit, inverter, traction motor, DC-DC converter.
Regen brake feel, one-pedal driving, B-mode complaints.
Charge port, cable, mobile connector, or session failures.
Sample complaint excerpts
12V Auxiliary Battery
- [2024] 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 sitting overnight, I drove my car approximately three miles parked and attempted to u
- [2024] 2024 BZ4x, 590 miles on ODO. Purchased the car on Sunday, 03/23/2025. Monday Morning - Turning on the Car (In my garage). I had it in "ready" while I tried to connect my Toyota app to the car, While talking to Toyota engagement for help.. (Never was able to change the primary driver on it.) The accessory lights flickered and a bell went on and off. Then the car went totally black. Toyota called a
- [2024] **Report to NHTSA – 12-Volt Battery Issue in Toyota BZ4X** **Vehicle Information:** - **Make & Model:** Toyota BZ4X - **Issue:** 12-Volt Battery Drain **Description of the Problem:** I have been experiencing repeated issues with the 12-volt battery in my Toyota BZ4X. If the vehicle is not driven for one or two days, the battery depletes, requiring a jump-start to operate. I have tak
High-Voltage Battery
- [2024] 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 continuing to drive, the vehicle accelerated. There were no warning lights. The failure
- [2024] 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 sitting overnight, I drove my car approximately three miles parked and attempted to u
- [2024] **Report to NHTSA – 12-Volt Battery Issue in Toyota BZ4X** **Vehicle Information:** - **Make & Model:** Toyota BZ4X - **Issue:** 12-Volt Battery Drain **Description of the Problem:** I have been experiencing repeated issues with the 12-volt battery in my Toyota BZ4X. If the vehicle is not driven for one or two days, the battery depletes, requiring a jump-start to operate. I have tak
Electric Propulsion
- [2024] The vehicle experienced repeated electrical and brake system malfunctions that pose serious safety concerns. On multiple occasions, the brake pedal became stiff and unresponsive while driving, and the parking brake system failed to engage properly. In addition, the ignition system often failed to start, even when the battery and all power indicators appeared normal. At times, the vehicle’s electr
- [2025] The front drive motor went out
Regenerative Braking
- [2024] 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 completely ignored the foot pressure. The pedal and braking system became complete
Charging System
- [2024] Sparks coming out the charge port
Source: classified from NHTSA complaint and recall data. "Battery-related" includes high-voltage propulsion battery, charging system, hybrid drivetrain, electric propulsion, regenerative braking, 12V auxiliary battery, and thermal-event complaints. Other complaints (suspension, steering, brakes, infotainment) appear in the engine and vehicle-level sections. Rates are absolute counts, not normalized per-VIN — high-volume models naturally produce more raw complaints than low-volume ones. Self-reported death and injury counts are capped per complaint to limit form abuse.
Battery: Toyota bZ4X FWD / Lexus RZ 450e pack (71.4 kWh)
Pack overview
Known issues
How this pack ages (industry context)
Industry fleet aggregates: 2.3% average annual capacity loss across 22,700 EVs / 21 models (Geotab, 2026), and 95% range retention at 5 years on average across 30,000+ vehicles (Recurrent, 2026).
OEM warranty floor on this pack: 8 yr / 100k mi to 70% capacity.
Public per-pack degradation curves are not available for most models. Individual results vary materially with climate, charging behavior, and DC fast-charge frequency.
Battery: Toyota bZ4X AWD / Subaru Solterra / Lexus RZ 300e pack (72.8 kWh)
Pack overview
Known issues
How this pack ages (industry context)
Industry fleet aggregates: 2.3% average annual capacity loss across 22,700 EVs / 21 models (Geotab, 2026), and 95% range retention at 5 years on average across 30,000+ vehicles (Recurrent, 2026).
OEM warranty floor on this pack: 8 yr / 100k mi to 70% capacity.
Public per-pack degradation curves are not available for most models. Individual results vary materially with climate, charging behavior, and DC fast-charge frequency.
Owner Complaints by System
Complaints owners filed with NHTSA about the Toyota bZ4X, counted across every engine. A complaint can name more than one system.
Recalls (4)
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2022-2026 Toyota, Lexus, and Subaru Solterra vehicles equipped with a Panoramic View Monitor (PVM) system. Please see the recall report for a complete list of models. A software error may cause the rearview camera to freeze or display a blank screen when the vehicle is in reverse. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 111, "Rear Visibility."
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2023-2025 bZ4X, Lexus RZ, and Subaru Solterra vehicles. During certain HVAC system faults, such as electrical compressor failure, the defroster and defogger system may become inoperative.
Gulf States Toyota, Inc. (GST) is recalling certain Toyota 2023 GR Supra, 2024 4 Runner, Corolla, Grand Highlander, Grand Highlander Hybrid, Land Cruiser Hybrid, Tacoma, Tacoma Hybrid, 2023-2024 BZ4X, Corolla Cross Hybrid, GR Corolla, GR86, Highlander, Highlander Hybrid, Prius, Prius Prime, Sequoia Hybrid, Tundra, Tundra Hybrid, Venza Hybrid, 2023-2025 Crown, and 2025 Camry Hybrid vehicles equipped with GST accessories. The load carrying capacity modification label may display inaccurate added weight values. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 110, "Tire Selection and Rims."
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2023 Subaru Solterra and Toyota BZ4X vehicles. The hub bolts on the wheels may loosen, causing a wheel to detach from the vehicle after low-mileage use.
NHTSA Safety Ratings About NHTSA ratings
Alternatives in Compact SUV
Frequently Asked Questions
What are the most common 2023-2025 Toyota bZ4X complaints?
Owners have filed 35 complaints with NHTSA about the 2023-2025 Toyota bZ4X. The systems they name most often are the electrical system, the wheels and tires and the body and trim.
Is the 2023-2025 Toyota bZ4X a good used car?
That depends on the model year, the mileage and the maintenance history of the car in front of you. Owners have filed 35 complaints with NHTSA about the 2023-2025 Toyota bZ4X. Check which systems they name most often and whether a recall is still open on that car.
How many NHTSA complaints does the 2023-2025 Toyota bZ4X have?
NHTSA has 35 owner complaints on file for the 2023-2025 Toyota bZ4X as of the latest data pull. A complaint is an owner's report, not a confirmed defect, and counts rise with sales.
What recalls affect the 2023-2025 Toyota bZ4X?
NHTSA lists 4 recalls covering some 2023-2025 Toyota bZ4X vehicles. Which ones apply depends on the VIN: enter it at nhtsa.gov/recalls to see the open campaigns on a specific car.
What should I check before buying a used Toyota bZ4X?
Run the VIN through NHTSA's recall lookup and confirm every open recall has been done. Look hardest at the electrical system, the wheels and tires and the body and trim, the systems owners complain about most. Ask for maintenance records, have an independent mechanic inspect the car and run a vehicle history report for prior accidents and title issues.
What are the NHTSA crash test ratings for the bZ4X?
The 2025 Toyota bZ4X received an overall 5-star safety rating from NHTSA. Frontal crash: 5 stars. Side crash: 5 stars. Rollover: 4 stars (11.6% rollover probability). Electronic Stability Control: Standard. Forward Collision Warning: Standard. Lane Departure Warning: Standard. These ratings are based on standardized crash tests conducted by the National Highway Traffic Safety Administration.
Data from NHTSA federal complaints database. 35 complaints analyzed. Data confidence: moderate. Last updated: 2026-10-12.