Which parts fail
Components named in complaints (automatic and manual transmissions, CVT, axles, driveshaft, 4WD/AWD).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2018 Chevrolet Malibu owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact owns a 2018 Chevrolet Malibu. The contact stated that the check engine warning light was illuminated and flashing. While in the park position, the shift to park message was displayed. The vehicle was slow to move. While adding fuel to the tank, the fuel would bubble at the top and stop. While driving approximately 35 mph, a 2018 GMC Terrain crashed into the front end of the vehicle. The driver sustained injuries to her hip, soft tissue, lower back, whiplash, and neck and medical attention was provided. There was a police report filed. There was no reported fire or air bag deployment. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The approximate failure mileage was 20,000.
The contact owns a 2018 Chevrolet Malibu. The contact stated that on several occasions while driving at various speeds, the message "Engine Power Reduced" was displayed, and the check engine warning light was illuminated. The contact stated that after 20 minutes of consecutive driving, the vehicle drove sluggishly and lost power. The vehicle was taken to an independent mechanic, where the check engine warning light was reset, but the diagnostic result was not provided. The vehicle was then taken to another independent mechanic where a diagnostic test could not be performed because the machine was unable to remain connected to the ECM. The vehicle was then taken to a dealer, but was not diagnosed. The contact stated that an unknown software update was performed; however, the failure persisted. …
The contact owns a 2018 Chevrolet Malibu. The contact stated that there was an oil leak coming from the engine. While driving at an undisclosed speed, the message "Engine Power Reduced" and "Service Stabili-trak" were displayed. Occasionally, the automatic emergency braking activated unexpectedly, and while the vehicle was stopped, the vehicle shuddered abnormally. The vehicle also decelerated and stalled occasionally. Additionally, the volume on the radio was stuck, the steering wheel command controls failed to operate as needed, and the air compressor was recently replaced. The contact associated the failures with NHTSA Campaign Number: 20V668000 (POWER TRAIN), 19V642000(ELECTRICAL SYSTEM, FUEL SYSTEM, GASOLINE, ENGINE), 18V400000(AIR BAGS), and 18V358000(FUEL SYSTEM, GASOLINE); however, the VIN was not included in the recalls. …
The contact owns a 2018 Chevrolet Malibu. The contact stated that there was a failure near the fuse box. Additionally, there was a grinding sound coming from the vehicle while the brake pedal was depressed. There were no warning lights illuminated. The contact stated that the engine warning light was illuminated prior to the failure. The ECM and PCM were diagnosed, and DTC: P0689 was retrieved. The vehicle was undrivable. An appointment was scheduled; however, the vehicle was not yet diagnosed or repaired due to the cost of the diagnostic test. The vehicle was inspected by an independent mechanic who checked the spark plugs, cylinders, and fuses; however, the vehicle still failed to start. The vehicle was not repaired. The manufacturer was contacted and notified of the failure; however, the contact was placed on hold. …
The contact owns a 2018 Chevrolet Malibu. The contact stated while driving 40 MPH, the contact had to pump the brake pedal to stop the vehicle. The brake pedal went to the floorboard while depressed. Additionally, the "Shift to Park" warning message was displayed even after the vehicle was in PARK. The vehicle was towed to the dealer. The dealer initially diagnosed that the brake pedal needed lubrication. The dealer lubricated the brake pedal; however, the failure recurred with a chemical odor detected. The vehicle was towed back to the dealer. The dealer diagnosed that the brake pump system and shift gear were faulty. The dealer replaced the brake pump system however, the chemical odor was still detected and the "Shift to Park" warning message was displayed. The vehicle was not repaired and remained at the dealer. The manufacturer was not made aware of the failure. …
The contact owns a 2018 Chevrolet Malibu. The contact stated that while driving at an undisclosed speed and exiting a ramp to get on to a major highway, the vehicle failed to accelerate as needed. The contact stated she depressed the accelerator pedal, and the vehicle failed to respond. The contact stated that the engine power reduced warning light was illuminated, and the vehicle decelerated and was almost rear-ended by an oncoming vehicle. The contact stated that the failure had been consistent for several weeks. The vehicle was previously taken to an independent mechanic and the contact was informed that the failure could be caused due to a failed unknown sensor. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 167,000.
The contact owns a 2018 Chevrolet Malibu. The contact stated that the gear shifter was intermittently stuck in park(P). The contact turned the steering wheel, engaged and disengaged the parking brake several times, per the Owner's manual instructions, and the gear shifter was able to shift out of park(P). The vehicle was taken to an independent mechanic, where the failure recurred. The mechanic was able to move the gear shifter out of park(P) after several attempts. The mechanic was unable to diagnose the vehicle and referred the contact to a dealer for assistance. The contact contacted two dealers, who advised that there was no availability for an appointment. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 89,992.
The contact owns a 2018 Chevrolet Malibu. The contact stated that while the vehicle was parked, the message "Shift to Park" was displayed on the instrument panel. The gear shifter was shifted back into drive and then back into park to turn off the vehicle. The contact also stated that while driving approximately 65 MPH, the vehicle shuddered, started to lose automotive power, and then continued driving; however, the vehicle operated at reduced power and failed to exceed 30 MPH. The check engine warning light was illuminated. The vehicle was restarted; however, the failure persisted. The contact stated that there was an unknown liquid dripping underneath the vehicle. The manufacturer was notified of the failure. The failure mileage was approximately 180,000.
The contact owns a 2018 Chevrolet Malibu. The contact stated while driving at an undisclosed speed and attempting to accelerate, the "Reduced Engine Power," message was displayed before the vehicle lost motive power. The contact was able to pull to the shoulder of the roadway, where the vehicle was able to be restarted. The check engine warning light was illuminated. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. After investigating the failure, the contact related the failure to NHTSA Campaign Number: 20V668000 (Power Train) but the VIN was not included. The manufacturer was not notified of the failure. The failure mileage was 48,000.
The contact owns a 2018 Chevrolet Malibu. The contact stated that while attempting to start the vehicle while in park(P), the message "Shift to Park" was displayed. The contact shifted in and out of park(P) and wiggled the gear shifter several times, but the failure persisted and the vehicle could not be started. The vehicle was diagnosed by three independent mechanics, and it was determined that the failure was associated with the transmission and the Transmission Control Module (TCM). The dealer was notified of the failure, and an appointment was scheduled for a diagnostic test. The failure mileage was 181,385.
Related recalls
Power train › Automatic transmission
General Motors LLC (GM) is recalling certain 2018-2019 Chevrolet Cruze and Buick LaCrosse, 2018-2020 Chevrolet Equinox, Chevrolet Traverse and GMC Terrain, 2018 Chevrolet Malibu, 2019-2020 Buick Encore, Buick Enclave, Cadillac XT4, Chevrolet Blazer and GMC Acadia, and 2020 Cadillac XT6 vehicles.
Remedy: GM will notify owners, and dealers will inspect the start-stop transmission accumulator and replace it if any bolts are missing, free of charge. The recall began December 15, 2020.
Transmission complaints in other Malibu years
Frequently asked questions
How common are transmission problems on the 2018 Chevrolet Malibu?
NHTSA has 171 complaints about the transmission & drivetrain of the 2018 Chevrolet Malibu, 24% of the model year's 700 complaints. The component named most often is automatic transmission › lever and linkage › floor shift (7 mentions).
Is there a recall for 2018 Chevrolet Malibu transmission problems?
Yes — NHTSA recall 20V-668 (automatic transmission, Oct 29, 2020). Recall repairs are free at authorized dealers.
At what mileage do 2018 Chevrolet Malibu transmission problems start?
Half of the complaints with a recorded mileage happened before about 43,000 miles, and 24% before 25,000 miles.
Is it dangerous?
Owners linked 3 crashes, 0 fires and 1 injury to transmission & drivetrain problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.