2020 MERCEDES-BENZ GLA-Class Problems

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Complaints Reported

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Complaints by Component

UNKNOWN OR OTHER

3 complaints

Had just gotten on the expressway, when a loud gunshot noise was heard. Out of fear, I ducked down, thinking it had actually been one. However, I heard a lot of wind coming in as if a window was down, when I look up, majority of my panoramic sunroof was gone. No messages or warnings appeared on the dash, and I pulled over to document photos and videos. The shade below the sunroof was not damaged, seems to be an internal force that made it explode and shatter into a thousand pieces.

Aug 24, 2025

Strong “gas odor” upon entering car And continues despite opening all windows to ventilate-also on one time occasion - sudden deceleration And “surging speed” alternately While cruising- it feels that the car Will “stop” and it’s worrisome that I may be “hit “ by the vehicle behind me- also several “dashboard warning lights” different messages just “flashed” which also caused some “Panic” on me- brought the car to the shop- all they did ABS sensor replaced- no other issues noted- I read from MB owners forums about MB Recalls about same issues NHTSA 21V-961 NHTSA 23V- 445

Sep 24, 2024

Transmission problem. On several occasions while driving, the car has lurched to a stop because gear changed suddenly from Drive to Park. At other times, the engine revvs and slows when it suddenly switches from Drive to "M1." After stopping, it goes back to "D" on its own. Serious safety issue, as I can get rear ended in traffic, or cause an accident for stopping without notice. I have one photo of the sudden transmission switch to M1 (today). Car has been towed to Mercedes service department; no other inspection yet. No warning lamps. Only that it is happening more frequently.

Oct 09, 2022

FUEL/PROPULSION SYSTEM

1 complaint

Problem has been confirmed by dealer that the rear differential assembly needs to be replaced. This is a very common defect with gla250’s. It been recalled in the past and Mercedes Benz is putting many drivers at risk. The estimated to replace is $6100! Mercedes Benz corporation refuses to replace the part only offering $1300. That is submission that they are aware something is wrong. I don’t feel safe driving a 2020 car. There have been many class action suits but there needs to be another investigation and recall which MB knows there is a problem and hazard

Jun 04, 2025

FUEL SYSTEM, GASOLINE,ENGINE

1 complaint

The contact owns a 2020 Mercedes-Benz GLA250. The contact stated that while driving 35-40 MPH, the check engine warning light illuminated. There was an abnormally loud rumbling sound heard. The contact pulled over and restarted the vehicle. The vehicle was taken to the local dealer, where it was diagnosed that the fuel injectors needed to be replaced. The vehicle was not repaired. The contact stated that the failure was related to TSB No: 2022030003. The manufacturer was contacted and referred the contact to the NHTSA Hotline. The failure mileage was approximately 86,000.

Oct 21, 2024

STEERING,POWER TRAIN,WHEELS

1 complaint

My Mercedes Benz GLA250 has a faulty rear differential and began shuddering and driving poorly when it had 44K miles on it. This is a very premature failure as diagnosed by two repair shops and is happening to thousands of this model Mercedes Benz. The damage can be catastrophic if continued to be driven as the differential metal continues to deteriorate and possibly have metal shavings travel into the engine. I was told initially by Mercedes Benz it was bad tires! I replaced the tires and the shuddering became worse. I searched for the problem myself on the internet as the problem continued to worsen and countless people are complaining, saying it’s the rear differential. The cost is between $4K and $5K to replace.

Oct 04, 2024

STEERING,ELECTRICAL SYSTEM,ENGINE

1 complaint

1. POWER STEERING: STEERING WHEEL WENT OUT ON A FREEWAY ALMOST CAUSING MASSIVE COLLISION (this has happened twice) 2. Car Jerkiness: reported this to MBZ of San Rafael for 2 years (went into shop 10+ times for same issue and not resolved. It lunges forward while driving. This also is a safety issue almost causing me to hit a pedestrian 3. Vehicle Not opening 4. Vehicle Overheating 5. Faulty Wiring 6. Screen Black out

Mar 06, 2024

POWER TRAIN,ELECTRICAL SYSTEM

1 complaint

TL* THE CONTACT OWNS A 2020 MERCEDES-BENZ GLA250. THE CONTACT STATED THAT THE VEHICLE FAILED TO START FROM THE CELL PHONE. THE CONTACT TRIED A COUPLE OF TIMES AND STARTED THE VEHICLE. THE CONTACT STATED THAT WHILE HIS WIFE WAS DRIVING AND MADE A STOP IN TRAFFIC, THE VEHICLE STALLED AND THE DASHBOARD ILLUMINATED ALL KINDS OF WARNING LIGHTS AND THE VEHICLE DID NOT MOVE. THE SOS SYSTEM ALERTED THE MANUFACTURER WHO SENT A TOW TRUCK. THE VEHICLE WAS TOWED TO THE MERCEDES-BENZ OF ATLANTIC CITY DEALER, LOCATED AT 6623 BLACK HORSE PIKE, EGG HARBOR TOWNSHIP, NJ 08234, WHERE THE TECHNICIAN WAS UNABLE TO DIAGNOSE THE FAILURE. THE TECHNICIAN CONTACTED MERCEDES IN GERMANY AND WAS TOLD THAT THE FAILURE COULD BE DUE TO A LOOSE WIRE. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND OFFERED A BUY-BACK ON THE CONDITION THE CONTACT WOULD PURCHASE ANOTHER VEHICLE FROM THE DEALER. THE CONTACT DECLINED THE OFFER. THE FAILURE MILEAGE WAS APPROXIMATELY 200. THE VIN WAS NOT PROVIDED.

Jan 29, 2020

4.6/5.0

65 reviews

Frequently Asked Questions

How many problems does the 2020 MERCEDES-BENZ GLA-Class have?

The 2020 MERCEDES-BENZ GLA-Class currently has 8 owner-reported complaints according to NHTSA database. These complaints are organized by component to help identify common issues.

What are the most common problems with 2020 MERCEDES-BENZ GLA-Class?

The most common problems reported for the 2020 MERCEDES-BENZ GLA-Class are organized by component above. Each component section shows owner-reported issues, crash reports, and fire incidents to help identify patterns and problem areas.

Where does this 2020 MERCEDES-BENZ GLA-Class problem data come from?

All problem and complaint data for the 2020 MERCEDES-BENZ GLA-Class comes directly from the National Highway Traffic Safety Administration (NHTSA) database. These are real complaints submitted by actual vehicle owners.