There are 1 stored owner reports matching the powertrain & transmission leading-label group for the 2018 Buick Regal in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
This group counts stored reports whose component label starts with one of this site's matching prefixes, ignoring case. Each matching report counts once within the group. Components mentioned later in the label or only in the narrative are not searched. How component counts work
Loaded 1 of 1 matching reports.
Open the full vehicle complaint log (all categories)WHILE BEING DRIVEN THE VEHICLES TRANSMISSION FAILS TO SHIFT GEARS WHILE RPMS ARE REGISTERED THE TRANSMISSION FAILS TO RESPOND AND LACKS POWER. I WAS FORCED TO SHIFT MANUALLY TO TRY AND GET THE GEARS TO SHIFT WITH NO LUCK AFTER QUICKLY MAKING THE SWITCH BETWEEN AUTOMATIC TO MANUAL TWICE THE AUTOMATIC TRANSMISSION RESPONDED WITH A LOUD CLANK AS IF THE SEMI BEHIND ME HAD HIT ME AND THE RESPONDED WITH ACCELERATION. THE ISSUE WAS REPORTED FIRST EARLY FEBRUARY 2020 AGAIN IN EARLY MAY 2020 AND RECENTLY EARLY OCTOBER 2020 SERVICE DEPARTMENT FAILS TO DUPLICATE ISSUE. MY DASHCAM CAPTURED VIDEO WHILE BEING DRIVEN BY THE SERVICE DEPARTMENT EXPRESSING THE STRANGE FEELING THE TRANSMISSION WOULD GIVE THEM WITH TORQUE AND SHIFTS.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Apr 28, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.