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2015 Proterra Catalyst recalls

Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.

4 recalls found in NHTSA data as of September 22, 2026

For the 2015 Proterra Catalyst. These apply to the model and year, not to one particular vehicle: check your VIN to see whether yours is included and whether it has been repaired.

Has your Proterra been repaired?

Recalls here come from NHTSA’s records for the model and year. Not every vehicle of a model is included in every recall, and this site can’t see whether a repair has been done. Only a VIN lookup can tell you that.

NHTSA’s VIN search doesn’t show recalls that were already repaired, recalls more than 15 years old, or some small manufacturers’ recalls. A Proterra dealer can also check your VIN. Recall repairs are free.

2015 Proterra Catalyst recalls, newest first

February 28, 2022NHTSA 22V114000724 vehicles potentially affected

Steering › Gear box (other than rack and pinion)

Summary
Proterra, Inc. (Proterra) is recalling certain 2017-2019 35 foot Catalyst E2, 2017-2019 40 foot E2, 2020-2021 35 foot RR, 2019-2020 40 foot RR, 2019-2022 40 foot ZX5, and 2020-2022 35 foot ZX5 buses. The plexus adhesive between the torque limiter plate and the bus body may be insufficient, causing the bolts that secure the steering gearbox to loosen.
Consequence
A loose steering gearbox can cause a loss of steering control, increasing the risk of a crash.
Remedy
Dealers will install a mechanical fastener and new bolts on the steering gearbox, and install a new torque plate, as necessary, free of charge. Owner notification letters were mailed October 7, 2022. Owners may contact Proterra's customer service at 1-864-438-0000.

This recall on nhtsa.gov

April 9, 2019NHTSA 19V28300039 vehicles potentially affected

Service brakes

Summary
Proterra, Inc. (Proterra) is recalling certain 2015-2018 Catalyst 40 buses equipped with an optional tow fitting and airline that allows a tow truck to operate the rear brakes on the vehicle. The mesh cap covering the airline for the tow fitting can be clogged with road debris in inclement weather, possibly resulting in a build up of air pressure in the rear brake system.
Consequence
A build up of air pressure can cause the brakes to drag and possibly overheat, increasing the risk of fire.
Remedy
Proterra will notify owners, and dealers will install an additional shield to the tow fitting that protects the mesh cap, free of charge. The recall began June 4, 2019. Owners may contact Proterra customer service at 1-864-438-0000.

This recall on nhtsa.gov

January 30, 2019NHTSA 19V062000310 vehicles potentially affected

Tires

Summary
Proterra Inc., (Proterra) is recalling certain 2015-2018 Catalyst 40 and 35 transit buses. The affected vehicles are equipped with a four point height control system that may cause a load imbalance, overloading the front tires.
Consequence
An overloaded front tire may fail unexpectedly, increasing the risk of crash.
Remedy
Proterra will notify owners, and dealers will convert the current four point ride height system into a three point system to prevent the front tires from being overloaded, free of charge. The recall began March 26, 2019. Owners may contact Proterra customer service at 1-864-438-0000.
Components
Tires; Suspension › Front

This recall on nhtsa.gov

January 16, 2019NHTSA 19V034000184 vehicles potentially affected

Equipment › Other › Labels

Summary
Proterra, Inc is recalling certain 2015-2018 Catalyst 40, and Catalyst 35 buses. The certification label may list an incorrect gross front axle weight rating and/or incorrect tire pressures. As such, these vehicles fail to comply with the requirements of 49 CFR Part 567, "Certification."
Consequence
If the tire pressure is understated, an underinflated tire may result in an increased risk of tire failure, increasing the risk of a crash.
Remedy
Proterra will notify owners, and dealers will replace the certification labels with correct information for all affected customers, free of charge. The recall began March 12, 2019. Owners may contact Proterra customer service at 1-864-438-0000.

This recall on nhtsa.gov

Owner complaints

No owner complaints about the 2015 Proterra Catalyst were found in NHTSA’s complaint data.

Other Proterra Catalyst years

Other 2015 Proterra models

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All of 2015’s most recalled vehicles

Questions

Does the 2015 Proterra Catalyst have any recalls?
4 recalls found in NHTSA data as of September 22, 2026, covering: steering, service brakes, tires, suspension, equipment. Recalls apply to the model and year; whether a particular vehicle is included, and whether it has been repaired, depends on its VIN.
How do I check if my 2015 Proterra Catalyst recall has been fixed?
Enter your 17-character VIN at nhtsa.gov/recalls, or ask a Proterra dealer. Recall repairs are free. NHTSA's VIN search doesn't list recalls that were already repaired.
How many complaints have owners filed about the 2015 Proterra Catalyst?
0 complaints filed with NHTSA. Complaints are unverified reports from the public that NHTSA uses to decide what to investigate.