There are 2 stored owner reports matching the powertrain & transmission leading-label group for the 2019 Mercedes-Benz A-Class 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 2 of 2 matching reports.
Open the full vehicle complaint log (all categories)As of June of 2026 i witnessed my thermostat gauge going from cold to Hot in a back and forth motion. This rising in temperature on the thermostat gauge has happened during acceleration above 45mph, sitting idle with AC on, and while sitting idle after only about 10 mins of car being powered on and in motion. Because the vehicle is under warranty i believed parts would be replaced with new parts but as of today August 11th, 2026, the problem continues and has now been reaching the hot meter on the thermostat gauge. I have sent my car back to my dealer 3 times in a month in a half with the same issue happening repeatedly. Following the second repair period my car stopped unlocking on and off for the days following and now that has been upgraded to a recall issue which was not fixed or truly given any attention at all. This has put me in a hardship position and has not been attended to properly from the first repair. I have In real time recordings of this issue as evidence and am needing some assistance on this matter. I also have the invoices of both repairs which show that no repair was done to the actual affected areas of my vehicle instead they worked on parts that were not of concern.
TL* THE CONTACT OWNS A 2019 MERCEDES-BENZ A220. WHILE DRIVING APPROXIMATELY 20 MPH AND DEPRESSING THE ACCELERATOR PEDAL, THE VEHICLE FAILED TO RESPOND AND THE GEAR DISPLAY INDICATED THAT THE TRANSMISSION WAS IN THE NEUTRAL POSITION. AFTER RESTARTING THE ENGINE, THE VEHICLE WAS DRIVEN TO FLAGSHIP MOTOR CARS OF LYNNFIELD (NORTH 385 BROADWAY RTE 1, LYNNFIELD, MA) TO BE DIAGNOSED, BUT THE CAUSE OF THE FAILURE COULD NOT BE DUPLICATED. AFTER RETRIEVING THE VEHICLE, THE FAILURE CONTINUED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 1,344.
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: Aug 31, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.