RoadVitals

2021 Zero Sr/S

Recalls, owner-reported complaints, investigations and safety data

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.
1
Latest Oct 7, 2022
Safety recallsA safety recall is issued when a manufacturer or NHTSA determines that a vehicle has a safety-related defect or does not comply with a federal motor vehicle safety standard. Recall repairs are free. Whether a specific vehicle is covered depends on its VIN — a recall listed for a model year does not necessarily apply to every vehicle of that year.
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InvestigationsNHTSA opens an investigation to examine whether a safety defect may exist. An open investigation is not a determination that a defect exists, and many investigations close without a recall. Investigations can, however, lead to one.
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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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Overview

Our database contains 1 NHTSA owner-reported complaint for the 2021 Zero Sr/S, most frequently naming the electrical category. 11 manufacturer communications are on file.

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

What owners report

Complaints grouped by the component NHTSA recorded

  • Electrical1100.0%

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

Safety recalls

No recalls in our database for this model year

That does not guarantee a specific vehicle is unaffected — recalls are issued against VINs, and new campaigns are announced regularly. Check a VIN on NHTSA.gov.

Recent owner complaints

Reports submitted to NHTSA, shown in the owner's own words

Electrical
Filed Oct 7, 2022

The contact owns a 2021 Zero SR/S Motorcycle. The contact stated while riding 40 MPH with the motorcycle in Eco Mode, he released the throttle and felt the motorcycle stall and lose power. The contact was able to pull over. The motorcycle was taken to the dealer and the battery and control unit were replaced; however, the motorcycle was not functioning as designed. The manufacturer was contacted and stated that the motorcycle operated as designed. The failure mileage was 1,000. The contact stated that the bike still remains at the shop because it is still malfunctioning. A replacement and a refund have been requested from both the dealer and the manufacturer; all requests were denied.

NHTSA ID
11488421
Incident
Jul 7, 2022
Mileage
1,000 mi

Manufacturer communications

A bulletin sent by a manufacturer to its dealers. Not a recall, and repairs are not necessarily free.

Cypher III OTA Firmware

ENGINE; FUEL/PROPULSION SYSTEM

CYPHER III OTA FIRMWARE RELEASE Coming Soon The latest firmware release (MBB V45, BMU V21, BMS V27) for 2020+ Cypher III motorcycles will be available Over The Air to customers on June 17. This release includes: Bug fixes Security improvements General system stability enhancements While customers may simply see an update notification, dealers should be aware that this release marks an important transition toward the Tuner diagnostic tool. For motorcycles running the latest Cypher III firmware, Tuner will become the primary tool for many service and maintenance functions moving forward. If your dealership hasn't explored Tuner yet, now is the perfect time to get started.

ZMDN-052026

ELECTRICAL SYSTEM

New diagnostic tool Tuner is available for 2017 and newer model.s On May 15th, a new firmware will be released for our FST / Cypher III models, primarily focused on improving cybersecurity.

ZMDN-022026

FUEL/PROPULSION SYSTEM

Dealer notification announcing new firmware for certain models of Zero Motorcycles.

Dealer News 102925

FUEL/PROPULSION SYSTEM

Dealer notification of release of new firmware for specific motorcycles.

Firmware Release

ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:SOFTWARE

Dealer notification of new firmware for motorcycle models.

New Firmware 5-2

ELECTRICAL SYSTEM; POWER TRAIN

Today, May 2, 2023, Zero Motorcycles has released a new firmware version for all motorcycles utilizing the Cypher III operating system.

Manufacturers file copies of the bulletins they send to dealers with NHTSA. These often describe diagnostic or repair procedures for a known condition. They are not recalls: repairs described in a bulletin are usually only free if the vehicle is still under warranty or the manufacturer has extended coverage.

Compare model years

Complaint and recall counts across every year of this model

Zero Sr/S by model year
YearComplaintsRecallsInvestigationsIssue Index
2026000—
2025000—
2024000—
2023000—
2022010—
2021Viewing100—
2020110—

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. Older model years have had longer for reports to accumulate.