2020 Chevrolet Malibu

May 7, 2026 National Highway Traffic Safety Administration 1200 New Jersey Avenue SE Washington, DC 20590 RE: Safety Defect Complaint – Brake System / Vehicle Control Concerns 2020 Chevrolet Malibu Dear NHTSA, I am submitting a safety complaint regarding persistent braking and vehicle control issues involving my 2020 Chevrolet Malibu. Prior to December 31, 2025, the vehicle exhibited jerking during braking, all dashboard gauges go to the left, warning lights, reduced power (20-25mph), and inconsistent braking behavior. This situation happens without warning, at any given time, even in the flow of traffic. An independent inspection indicated the brake system was in proper condition, suggesting a more complex underlying safety issue. The vehicle was taken to Reed-Lallier Chevrolet for diagnosis and remained there for approximately five months. During that time, I was not provided documentation confirming completion of a brake system diagnostic or a clear resolution path. Due to the extended delay without diagnosis, I no longer feel safe operating the vehicle. I am also concerned that prolonged inactivity without proper repair may have worsened the condition and increased risk of failure. Given the nature of the symptoms involving braking and vehicle control, I request review for potential safety-related investigation. Vehicle Information: 2020 Chevrolet Malibu VIN: Mileage:

To Whom It May Concern, ​I am writing to formally report a critical safety defect regarding my 2020 Chevrolet Malibu. This defect resulted in a life-threatening incident while I was driving on the highway, during which my vehicle failed to stop as required. ​While operating at highway speeds, the brake pedal became extremely hard to depress, making it nearly impossible to decelerate or bring the vehicle to a complete stop. This sudden loss of power assist forced me to manage an incredibly dangerous situation in high-speed traffic. Based on the symptoms, I am concerned that the brake booster vacuum pump has suffered an internal failure, a documented issue for this model year where oil sludge or debris causes the pump to seize. ​In addition to the physical resistance of the pedal, I am concerned about the reliability of the Electronic Brake Control Module (EBCM). The failure experienced on the highway demonstrates that this vehicle is unsafe for public roads, as the force required to engage the brakes in an emergency is far beyond safe operating standards. ​I request that the NHTSA investigate this brake failure and determine if a mandatory recall is necessary to prevent similar incidents from resulting in catastrophic collisions. ​Please contact me if you require further information Thank you [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

I am writing to report a serious and dangerous issue that occurred with my 2020 Chevrolet Malibu LT on April 27th 2026. While driving on the interstate after work, my vehicle suddenly experienced a failure that made it extremely unsafe to operate. The brake pedal became extremely hard to press, and the vehicle did not want to slow down or stop properly. This created a very dangerous situation while I was driving at highway speeds. Additionally, I noticed that nearly all of the engine oil was gone, which is extremely concerning and may be related to the failure. Based on these symptoms, it appears the vacuum pump may have failed while the vehicle was in motion. This issue placed me at significant risk of an accident and could have resulted in serious injury. I am requesting an immediate investigation into this matter and assistance with repairs. I would also like to know if there are any recalls, known defects, or extended warranties related to this issue. Please advise on the next steps as soon as possible, as the vehicle is currently unsafe to drive.

When braking, the vehicle experiences a system failure. There is a loud impact, the dashboard shuts down, warning lights activate all gauges go to the left, and the vehicle loses power and enters a reduced speed mode before recovering. This has been ongoing and creates a dangerous driving condition. The dealership has had the vehicle over four months and has not diagnosed or repaired the issue. Please Note: I have attached the invoice sent to me on April 17, 2026, via email. The information in section 3 had been changed while I was sitting there. It originally state, engine repair needed. It said absolutely nothing about the reason I was there, which was what I am now describing. The description in section 3, has been worded incorrectly. It states I said, when coming to a stop, but it is not only when coming to a stop, but even if I am in flowing traffic and have to touch my brakes to slow down at any given time, there is a loud thump sound and a jolt, all of the dash lights come on, all the gauges go to the left, the warning lights are on and it has to sit there, not for a few seconds, but until those lights go back off and then it will move very slowly, until it decides to gain power. You have no warnings as to when it will happen or when the car will regain speed when it does happen. I gave pictures of the dash on April 17, 2026, as well and these pictures have the date December 31, 2025, on them. As I was having the issue while driving it to the dealership for repair. The invoice mentions [XXX] . I do not know her and have never met her. I only spoke with a man. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact owns a 2020 Chevrolet Malibu. The contact stated that while driving approximately 35 MPH, an unknown warning light illuminated, and the vehicle started to lose motive power. The contact stopped at a traffic signal and after depressing the accelerator pedal when the light changed, the vehicle stalled. The vehicle was restarted after several attempts, but the vehicle failed to exceed 5 MPH while accelerating. The contact stopped and the vehicle was towed to an independent mechanic. The vehicle was diagnosed, the battery was replaced, and the system was reset; however, the failure reoccurred and the vehicle was towed to a dealer. The vehicle was diagnosed, and it was determined that the front wiring harness needed to be replaced. The vehicle was repaired. The manufacturer was informed of the failure and referred the contact to the NHTSA Hotline. The failure mileage was approximately 23,000.

Reduced Engine Power Light: The car limits acceleration, often accompanied by a check engine light. Stalling or Hesitation: Engine stalls or acts sluggish when accelerating, particularly in traffic. Limp Mode: The vehicle restricts speed, making it difficult to accelerate. The car stop working in the middle of the freeway and I was in the car with my child when it stop acceleration all gages in the car were going crazy, car was shaking bad finally car turn off. I was able to make it to the emergency lane of the freeway. There's similar complaints for 2020 Chevy Malibu but no recall has been done. Per my research it looks like a lot of this type of vehicles have problems with throttle body causing Engine stalls. Do the right thing and open up a vehicle recall, thank you!

The contact owns a 2020 Chevrolet Malibu. The contact stated that while driving approximately 60 MPH on the freeway and depressing the brake pedal to slow down, the brake pedal was difficult to depress, and the vehicle failed to immediately stop. During the failure, the check engine and traction control warning lights were illuminated. The vehicle was slowly driven to the residence and parked. The cause of the failure was not yet determined. The local dealer was notified of the failure. The manufacturer was not yet contacted. The failure mileage was 85,547.