2021 Mercedes-benz GLA-Class Complaints

Cowl vent grille openings allowed normal environmental debris to accumulate, plug drainage and divert water onto electrical components and potentially result in a fire if not addressed. Some of the debris passes through into the hvac system and cannot be cleaned without dealer removal/repair of the hvac motor, which costs the customer more than $500 in repairs and disincentivizes mitigation. Furthermore, Mercedes is aware of the problem, has not issued a customer satisfaction recall, and instead, is charging customers more than $1,000 to install a plastic protective shield to prevent accumulation of debris, clogged water management, and risk of fire.

I recently purchased my vehicle with under 30k miles in July of 2026. Not long after my purchase my car began roughly idling with a blinking check engine light, and soon after the engine began misfiring. This also cause loss of power when attempting to accelerate creating dangerous conditions in high traffic/fast paced areas. After lots of research I found several reports of owners with cylinder failures. The dealership only responded to fixing the issue after calling them out directly on the issue.

Component/System: Engine cooling and lubrication system. Coolant was found mixing with engine oil (milky oil), indicating internal engine failure (I was informed it could be oil cooler/housing, thermostat, head gasket, or related components). Vehicle is currently at an authorized Mercedes-Benz dealership and available for inspection. The front left inner lining of my front break pad also "failed" inspection and the other 3 front break pads say "caution" and I never received a notification or warning about my breaks. Safety Risk: Coolant contamination of engine oil can cause sudden engine failure or loss of power without warning, creating a serious safety risk while driving, especially at highway speeds. There was no indication that engine oil was mixing with coolant, check engine light failed to illuminate/ no diagnostic warning illuminated. The condition was discovered incidentally during routine maintenance, which prevented any opportunity for corrective action prior to the failure....

The Gas Door did not open in order to pump gasoline. There is no mechanical device for the driver, passenger, owner of the vehicle to manually open the gas door from the inside. There was no electronic warning within the Mercedes Benz to alert driver about malfunction of gas door not working. Driver took vehicle to local Firestone mechanic who said the "gas door actuator" needed to be replaced. Accordingly, vehicle with the remaining gasoline was taken to local Mercedes Dealer who after the vehicle being looked at, "confirmed gas door to not opening due to internal mechanical fault" and replaced with new gas door actuator at a cost of $820.28. Vehicle owner mentioned to service rep, that he lives from parents about 150 miles away and had the vehicle owner stopped at gas station in between, the vehicle owner would have been stranded without any access to a dealer to fix this critical safety issue. Vehicle owner then advised service rep this issue should have been elevated as critical sa...

When coming to a full stop at a red light (or any need to idle at a stop), the car frequently begins to hesitate as if it is about to cut off. I assume it has something to do with the ‘fuel saving feature’ which comes on in the form of a green symbol in the lower left of the odometer display (the engine is still running the AC) . When you start to drive again the car always jerks before moving , on at least 3 occasions it has actually cut off completely and must be restarted (everything goes off) - it is big problem, especially in heavy traffic (horns blaring & angry drivers are encountered) I almost had a car hit me from behind; my car had jerked slightly when I began to accelerate and then shut off completely. It is definitely a dangerous defect. The Dealership emphasizes 93 Octane gas or higher to help with this issue- but I Always use the highest Octane gas I can find ! It has happened VERY often - I dread stopping at red lights and stop signs, one day it will cause an a...