Chevrolet Malibu engine failure problems

Filed Sep 16, 2026 · Brakes, Engine · MI

Due to the vacuum pump failing during driving, metal shards broke inside of the car and went into the engine destroying it completely. Now i need a whole new engine

Filed Sep 8, 2026 · Brakes · 120,000 miles · MD

The contact owns a 2020 Chevrolet Malibu. The contact stated that while attempting to depress the brake pedal, the brakes failed to respond and seized, causing the contact to engage the parking brake. The contact was able to pull over while awaiting tow truck assistance. The vehicle was towed to a dealer to be diagnosed. The contact stated that a Lexus engineer retrieved the EDR; however, there was no failure found with the braking system. The failure mileage was 120,000.

Filed Aug 3, 2026 · Brakes, Engine · MS

I own a 2018 Chevy Malibu. At approximately 57,000 miles, the original engine experienced a vacuum pump failure that resulted in catastrophic engine damage. The engine was replaced by General Motors under the vehicle's warranty. I then drove the vehicle for approximately another 52,000 miles with the warranty replacement engine. At that point, I experienced a sudden loss of braking while driving. My vehicle was again diagnosed with a vacuum pump failure, and the vacuum pump was replaced. Approximately one week after the vacuum pump replacement, the warranty replacement engine suffered catastrophic failure. The repair facility diagnosed cylinder #3 scoring and informed me that the engine required replacement. I was told that the engine failure was related to the vacuum pump failure. Because the warranty replacement engine was no longer covered under warranty, General Motors initially declined to cover the repair. Initially, neither General Motors nor the Chevrolet dealership was willing to accept responsibility for the issue. After continued discussions, General Motors ultimately agreed to provide partial financial assistance as a goodwill adjustment. However, I was still left responsible for paying a substantial amount out of pocket to purchase and install a third engine. The cost has created a significant financial burden that I have struggled to afford, especially because the repair involved a component that I was informed has a known history of failure. I was also informed that vacuum pump failures are a known issue with these vehicles and that General Motors is aware of the problem, although no recall has been issued. I am submitting this complaint because I have experienced multiple vacuum pump failures, two catastrophic engine failures, and have now required three engines in the same vehicle. This has resulted in significant financial hardship, loss of use of my vehicle, and serious concerns about the safety and reliability of this vehicle.

Filed Jul 6, 2026 · Brakes, Driver assistance · WA

While driving, the brakes became hard and the vehicle was difficult to stop. The brake pedal required excessive force, brake assist was reduced, and the stopping distance increased, creating a serious safety hazard. The check engine light had been illuminated for approximately two years before the brake failure occurred. In January 2024, I reported brake-related concerns to a Chevrolet dealership while the vehicle was under warranty, but the root cause was not diagnosed. In November 2025, after the brake pedal became hard, an independent repair facility inspected the vehicle and determined the brake problem was caused by a failing engine vacuum pump. They advised that the vehicle be repaired by a Chevrolet dealership. By January 2026, the brake condition had worsened to the point that the vehicle was no longer safe to drive and had to be towed. A Chevrolet dealership later confirmed that the engine vacuum pump had seized and damaged the camshaft, requiring replacement of both components. The vehicle remains inoperable. The failed vacuum pump caused loss of brake assist, resulting in a hard brake pedal, reduced braking ability, and an increased risk of a crash. I believe this represents a serious safety defect because failure of the vacuum pump significantly impairs the driver’s ability to stop the vehicle safely. I understand GM has issued service information regarding vacuum pump failures on this engine, and I am submitting this complaint because I believe other drivers may experience the same dangerous brake failure.

Filed Jun 8, 2026 · Fuel system · 65,000 miles · GA

The contact owns a 2022 Chevrolet Malibu. The contact stated that while driving at 65 MPH, the accelerator pedal was depressed, but the vehicle failed to accelerate as intended and entered reduced power mode. The Check Engine and the reduced power mode warning lights were illuminated. Additionally, the contact stated that the engine seized later. The contact stated that the vehicle was able to restart, but the vehicle made an abnormal sound, and the failure was persistent. The contact stated that the failure occurred while driving on a busy highway, which was frightening. The vehicle was taken to the dealer, who retrieved diagnostic trouble codes: P00C6, P0137, P0171, P0299, P089, and P2097. The contact was informed that the codes were associated with the fuel system failure. The vehicle was not repaired. The manufacturer was made aware of the failure but provided no assistance. The failure mileage was approximately 65,000.

Filed Apr 27, 2026 · Engine · IN

Main seal leaking and engine needs replaced at 95,000 miles.

Filed Feb 24, 2026 · Engine · 125,000 miles · IA

The contact owns a 2013 Chevrolet Malibu. The contact stated that while idling at a stoplight, the vehicle suddenly stalled. The failure occurred on several occasions. The contact stated that after restarting the vehicle, the vehicle operated normally, but failed to immediately restart on several occasions. The vehicle was taken back to the dealer, who replaced the engine oil pump, but the failure persisted. The manufacturer and local dealer were not notified of the failures. The failure mileage was 125,000.

Filed Dec 29, 2025 · Engine · IN

While driving, the vehicle experienced a mechanical failure involving the engine and lubrication system. Oil leakage was observed, and the engine began operating abnormally. This created a risk of sudden engine failure while the vehicle was in motion, which could result in loss of power, stalling, or loss of control, especially at highway speeds or in traffic. Prior to the failure, warning signs included abnormal engine behavior and fluid loss. The issue was not caused by driver error and occurred during normal operation. Continued operation in this condition presents a fire risk if oil contacts hot engine components. The problem has been inspected by a repair facility, and the failure appears to be related to a mechanical or manufacturing defect rather than wear or misuse. The component is available for inspection upon request. This defect poses a safety risk to the driver, passengers, and other motorists due to the possibility of sudden engine failure, loss of propulsion, or fire.

Filed Dec 18, 2025 · Engine · 90,000 miles · GA

The contact owns a 2016 Chevrolet Malibu. The contact stated that while driving at an undisclosed speed, the accelerator pedal was depressed; however, the vehicle failed to accelerate. In addition, the vehicle occasionally accelerated independently. The contact stated that several unknown warning lights were illuminated, and the engine seized. The contact stated that the vehicle was jump-started daily, and the unknown warning lights turned off when the vehicle started. The vehicle was taken to the dealer; however, the failure was not duplicated. The vehicle was taken to several independent mechanics; however, the failure was not duplicated. In addition, the vehicle was taken back to the dealer where the vehicle was purchased; however, the failure was not duplicated. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was not made aware of the failure. The failure mileage was approximately 90,000.

Filed Aug 8, 2025 · Steering · 160,000 miles · WI · crash · 1 injury

The contact owns a 2016 Chevrolet Malibu. The contact stated that while his daughter was driving at approximately 30 MPH, the vehicle came to a stop. After coming from the stop, the steering wheel seized. Several unknown warning lights were illuminated. The contact’s daughter crashed the vehicle into a utility pole and a utility box. The air bags deployed. The contact’s daughter was transported to the hospital by ambulance and treated for a concussion and seat belt-related bruising on her chest and waist. A police report was filed. The vehicle was towed to a tow yard, but the insurance company was not yet notified of the accident. The manufacturer was not made aware of the failure. The failure mileage was approximately 160,000.