AutoStatsIQ
Data through Oct 2026
Model year

2023 Proterra ZX5

Body and fuel not decoded. Owner complaints on file from no date to no date.

Recalls (0)Complaints (0)Investigations (0)Bulletins (24)
Recall campaigns covering this model year0No recall campaign lists this model year
Owner complaints0Not enough peers on file
Severity indexNoneCrash, fire, injury or death per 100
First 24 months0Complaints in its first two years
Complaints over time

Complaints about the 2023 Proterra ZX5 by year filed

Owner complaints about this model year, by the year they were filed with NHTSA.

No campaigns match these filters.Reset filters
Source: NHTSA ODI complaints file. The lighter column runs through October.
Components

Complaints by component

Owner complaints by component. Hover or focus a bar for the crash, fire, injury or death count.

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Source: NHTSA ODI complaints file. A complaint can name more than one component; it is counted under the first.
Recalls

No recall campaign lists the 2023 Proterra ZX5

Check a specific vehicle by VIN on NHTSA's site: a campaign may cover only part of a model year's production.

Source: NHTSA ODI recalls file.
Look up a VIN at NHTSA
Owner complaints

What owners reported about the 2023 Proterra ZX5

The full text of every complaint filed with NHTSA about this model year, newest first. Complaints are filed by owners and are not verified by NHTSA; NHTSA removes personal details before publishing.

0 complaints on file.

    Source: NHTSA ODI complaints file.
    Investigations

    NHTSA has not opened an investigation on this model year

    Source: NHTSA ODI investigations file.
    All investigations
    Service bulletins

    24 manufacturer communications cover this model year

    Technical service bulletins and other notices the manufacturer sent to dealers. A bulletin is not a recall.

    • SC-25-015 Oct 15, 2025 · Service Bulletin/Repair Instructions
      Service bulletin outlining an EEPROM adjustment to reduce regeneration cycles, resulting in lower cabin noise and reduced operating temperatures.
    • SC-23-042 Jan 4, 2024 · Service Bulletin/Repair Instructions
      Transit bus harness RW to add diode inline for proper can communication.
    • SC-23-160 Mar 25, 2024 · Service Bulletin/Repair Instructions
      Transit bus vehicle controller software update to fix bugs and improve driver experience.
    • SC-24-014 Jul 13, 2024 · Service Bulletin/Repair Instructions
      Heavy duty transit bus software update to support bugs and enhancements for the ZX5 fleet.
    • SC-24-013 Aug 15, 2024 · Service Bulletin/Repair Instructions
      Transit bus software update to support bugs and enhancement for the fleet. As well as fault updates.
    • FC-23-006 Nov 29, 2022 · Service Bulletin/Repair Instructions
      Repair instructions for the telemetry system on the heavy duty transit buses if the system is not reporting.
    • FC-23-140 Nov 21, 2023 · Service Bulletin/Repair Instructions
      Service bulletin fleet check for the transit buses due to potential missing split blocks on DuoPower Vehicles.
    • IB-23-032 Oct 6, 2022 · Service Bulletin/Repair Instructions
      Service Bulletin for an alternative coolant temp sensor for transit buses as the original sensor installed is challenging to purchase due to supply constraints.
    • IB-23-124 Oct 4, 2023 · Service Bulletin/Repair Instructions
      Service Bulletin for Transit Vehicles to reduce the gearboxes PMI interval due to failing filters.
    • SC-22-044 Aug 8, 2023 · Service Bulletin/Repair Instructions
      Bulletin instructions for rotating the ambient temp sensor 180deg on transit buses to reduce road debris from accumulating on the temp sensor.
    • SC-23-007 Mar 29, 2024 · Service Bulletin/Repair Instructions
      HVAC Software update to increase the threshold voltage from 740v to 785v to overcome with the HV fault at 100% SOC.
    • SC-23-030 Feb 24, 2023 · Service Bulletin/Repair Instructions
      Software update to the HVAC controller due to a supplier change in isolator materials. The solution RPM changed to reduce the resonance heard in the cabin.
    • SC-23-041 Apr 23, 2023 · Service Bulletin/Repair Instructions
      Retrofitting the passenger stop request buttons to properly illuminate the sign by the driver to allow other passengers and driver that a customer would like to exit the vehicle.
    • SC-23-044 May 3, 2023 · Service Bulletin/Repair Instructions
      The procedure describes the process of removing the previous used parking brake tank support bracket, and reinstalling a more secured bracket.
    • SC-23-055 Jul 11, 2023 · Service Bulletin/Repair Instructions
      Relocation of the air compressors intake as well as adding a preliminary filter at the top of the air intake..
    • SC-23-085 Jun 1, 2023 · Service Bulletin/Repair Instructions
      The procedure describes the process of updating the gearboxes from a dual turn to a single turn snap ring on Duopower buses.
    • SC-23-090 Sep 8, 2023 · Service Bulletin/Repair Instructions
      This Technical Service Bulletin covers the procedure for replacing the Power Electronic Coolant Loop quick connect fittings with more durable brass fittings on 35ft ZX5.A0 buses.
    • SC-23-091 Sep 8, 2023 · Service Bulletin/Repair Instructions
      This Technical Service Bulletin covers the procedure for replacing the Power Electronic Coolant Loop quick connect fittings with more durable brass fittings for 40ft ZX5.A0 buses.
    • SC-23-109 Aug 17, 2023 · Service Bulletin/Repair Instructions
      The procedure describes the process of updating the vehicles software along with a hardware change to improve the vehicles experience and diagnostics on ZX5.A02 buses.
    • SC-23-115 Aug 3, 2023 · Service Bulletin/Repair Instructions
      The procedure describes the process of updating the vehicles software to 3.8.13 to improve the vehicles experience and diagnostics.
    • SC-23-128 Sep 22, 2023 · Service Bulletin/Repair Instructions
      The procedure describes the process of rerouting the rooftop coolant lines so the expansion tank is downstream of the HVAC chiller and lowers the pressure drop between expansion tank and pump inlet.
    • SC-23-154 Nov 21, 2023 · Service Bulletin/Repair Instructions
      The procedure describes the process of updating the PCM to latest Software to reduce improper faults.
    • SC-23-176 Jan 23, 2024 · Service Bulletin/Repair Instructions
      BMS software update to the latest version. It improves current sensors performance and adjusts the isolation fault threshold value.
    • SC-23-177 Jan 22, 2024 · Service Bulletin/Repair Instructions
      This procedure updates the BMS software to the latest version.
    Source: NHTSA manufacturer communications files.
    About service bulletins