2021 Mercedes-Benz AMG GLC43 Problems, Complaints & Recalls

Source: NHTSA · Updated Aug 4, 2026 · 6 owner complaints analyzed

Compared with other AMG GLC43 years
Not enough data 1st of 11 for complaints
NHTSA crash rating
Not rated

Owners have filed 6 complaints with NHTSA about the 2021 Mercedes-Benz AMG GLC43. That is the most of any AMG GLC43 model year in the database (11 years). The most reported problem area is engine (2 complaints, 33%). There are 7 safety recalls covering this model year.

Complaints are unverified owner reports and are not adjusted for sales volume.

Compare with another car

Most common 2021 Mercedes-Benz AMG GLC43 problems

Complaints grouped by the part of the car owners reported, with the median mileage when the problem happened.

Engine2
Electrical System1
Exterior Lighting1
Power Train1
Tires1 · ~10,000 mi
Unknown or Other1
Problem areaComplaintsShareMedian milesOwners mention mostTypical repair cost
Engine233%———
Electrical System117%———
Exterior Lighting117%———
Power Train117%———
Tires117%10,000——
Unknown or Other117%———

One complaint can list several problem areas, so shares can add up to more than 100%.

Complaints by year received

Peak: 2026, with 3 complaints
2023: 2202322025: 1202512026: 320263

n = 6 complaints · Source: NHTSA

2021 Mercedes-Benz AMG GLC43 recalls (7)

Tap a recall to see the problem, the risk and the fix.

Exterior lighting:headlightsFeb 2, 2024 · NHTSA campaign 24V070000 · 15,502 vehicles

Problem: Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2019-2022 GLC 300, 2020 GLC 350e, and 2020-2022 AMG GLC 43 vehicles. The headlights may be incorrectly adjusted too high and create a glare for oncoming traffic. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 108, "Lamps, Reflective Devices, and Associated Equipment."

Risk: Incorrectly aimed headlights can reduce the visibility of oncoming traffic, increasing the risk of a crash.

Fix: Dealers will inspect the headlight adjustment and correct it if necessary, free of charge. Owner notification letters were mailed February 23, 2024. Owners may contact MBUSA customer service at 1-800-367-6372.

Fuel system, gasoline:delivery:fuel pumpJun 26, 2023 · NHTSA campaign 23V445000 · 143,551 vehicles

Problem: Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2021-2023 C-Class, E-Class, S-Class, CLS, SL, GT, GLC, GLE, GLS, and G-Class vehicles. Please refer to MBUSA's recall report for specific vehicle details. The fuel pump may shutdown, which can result in a loss of drive power.

Risk: A loss of drive power can increase the risk of a crash.

Fix: Dealers will replace the fuel pump, free of charge. Owner notification letters were mailed on June 14, 2024. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2023070012.

Electrical system:software; communication: auto crash notificationMay 20, 2022 · NHTSA campaign 22V365000 · 242,722 vehicles

Problem: Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2017-2022 CLA-Class, GLA-Class, GLE-Class, GLS-Class, SLC-Class, A-Class, AMG GT-Class, C-Class, E-Class, S-Class, SL-Class, GLC-Class, CLS-Class, GLB-Class, and G-Class vehicles. Please refer to MBUSA's recall report for specific vehicle model details. An error in the communication module's SIM card software can cause a mobile network connection failure, disabling the emergency call (eCall) system.

Risk: A disabled eCall system would prevent a vehicle occupant from contacting the emergency services call center in an emergency, potentially delaying emergency responders and increasing the risk of injury.

Fix: The communication module software will be updated through an Over-the-Air (OTA) update or by a dealer, free of charge. Owner notification letters were mailed July 8, 2022. Owner notification letters will be mailed in phases, on July 8, 2022, May 17, 2024, July 29, 2024, and September 27, 2024. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's numbers are for this recall is 2022060005 and 2023110006.

Exterior lighting:headlightsApr 15, 2022 · NHTSA campaign 22V261000 · 129 vehicles

Problem: Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2021 GLC 300, GLC 300 4Matic, AMG GLC 63 4Matic, AMG GLC 63 S 4Matic, and AMG GLC 43 4Matic vehicles. The electrical connection for the headlights may not be watertight, which can result in headlight failure.

Risk: Headlight failure can decrease visibility for both the driver and surrounding traffic, increasing the risk of a crash.

Fix: Dealers will inspect and replace the headlight sealing plugs, as necessary, free of charge. Owner notification letters were mailed June 3, 2022. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2022050005.

Back over prevention: sensing system: camera; electrical system:softwareMay 14, 2021 · NHTSA campaign 21V354000 · 343,191 vehicles

Problem: Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2019-2021 CLA-Class, GLE/GLS-Class, A-Class, E-Class, E-Class Coupe and Convertible, GLA/GLB-Class, GLC-Class, CLS-Class, and AMG GT-Class 4-door Coupe vehicles. Please refer to MBUSA's recall report for specific vehicle model details. The MBUX multimedia system software may cause the display to remain black, or reboot after startup. This could result in the rearview camera image not displaying properly. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 111, "Rear Visibility."

Risk: A backup camera that displays a blank image reduces the driver's rear view, increasing the risk of a crash or injury.

Fix: The multimedia system software will be updated by a dealer, or through an over-the-air (OTA) update, free of charge. Owner notification letters were mailed beginning June 28, 2021. Owners may contact MBUSA customer service at 1-800-367-6373. MBUSA's number for this recall is 2021050012.

Seats; seat belts:pretensioner; air bags:sensor:occupant classificationApr 1, 2021 · NHTSA campaign 21V230000 · 8,634 vehicles

Problem: Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2021 C-Class, E-Class, E-Class Coupe and Convertible, GLC, CLS, AMG GT 4-door Coupe and G-Class vehicles. Please refer to MBUSA's recall report for specific vehicle model details. A faulty electrical contact within the seat position switch may prevent the driver and passenger air bags and seat belt force limiters from properly activating during a crash.

Risk: Air bags and seat belts that do not perform properly in a crash can increase the risk of injury.

Fix: MBUSA will notify owners, and dealers will replace the seat position switches, free of charge. Owner letters were mailed May 21, 2021. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2021040016.

Communication: auto crash notification; electrical system:softwareFeb 5, 2021 · NHTSA campaign 21V058000 · 1,292,258 vehicles

Problem: Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2016 - 2021 CLA-Class, GLA-Class, GLE-Class, GLS-Class, SLC-Class, A-Class, GT-Class, C-Class, E-Class, S-Class, CLS-Class, SL-Class, B-Class, GLB-Class, GLC-Class, and G-Class vehicles. Please refer to the Part 573 report for specific vehicle model details. The software design of the communication module may fail to communicate the correct vehicle location for the emergency call system (eCall) in the event of a crash.

Risk: Failure of the eCall system may result in emergency responders being dispatched to the wrong location, increasing the risk of injury following a crash.

Fix: MBUSA will notify owners, and the communication module software will be updated by a dealer, or through an over-the-air (OTA) update, free of charge. The recall began March 12, 2021. Owners may contact MBUSA customer service at 1-877-762-8267. MBUSA's number for this recall is 2021020025.

To see whether a specific car still has an open recall, enter its VIN on NHTSA's official recall lookup. You can also decode a VIN here.

Recent owner reports

Short excerpts of the latest complaints filed with NHTSA, with personal details removed. Full reports can be searched on NHTSA.gov.

Moisture began collecting inside the left headlight assembly, even though the housing should be sealed. Over time, the condensation increased and the front left turn signal failed. The vehicle displayed warning messages for the turn signal, low beams, Blind Spot Assist, Traffic Sign Assist, and…

Electrical System · received Aug 4, 2026 · NHTSA complaint 11754832

The engine-driven vacuum pump and turbocharger boost-control vacuum system malfunctioned. The vehicle developed insufficient vacuum to the boost-control system, resulting in a P0299 turbocharger underboost fault and reduced engine power. The vehicle is available for inspection upon request. The…

Power Train · received Jul 2, 2026 · NHTSA complaint 11747935

At just 30,000 miles — less than half the mileage at which these failures are typically reported — my GLC 43 was found to have active oil leaks in multiple locations: 1. Front engine covers — oil is seeping from both the front cover gasket area and migrating downward along the engine block…

Engine · received Jun 8, 2026 · NHTSA complaint 11742742

2021 Mercedes GLC 43 headlight is inoperable. Same as reported in campaign 22V261000: "Headlight failure can decrease visibility for both the driver and surrounding traffic, increasing the risk of a crash." Although our car was produced before the dates reported in campaign 22V261000, I believe…

Exterior Lighting · received Sep 26, 2025 · NHTSA complaint 11689974

Panoramic sunroof exploded while driving.

Unknown or Other · received May 8, 2023 · NHTSA complaint 11521032

Other Mercedes-Benz AMG GLC43 years

← 2020 AMG GLC43 · 2022 AMG GLC43 →

See all Mercedes-Benz AMG GLC43 problems by year, every Mercedes-Benz model, or the Mercedes-Benz VIN decoder.

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Frequently asked questions

What are the most common problems with the 2021 Mercedes-Benz AMG GLC43?

Owners most often report engine, electrical system, exterior lighting problems. The top one, engine, accounts for 2 complaints.

Was there a recall on the 2021 Mercedes-Benz AMG GLC43?

Yes, 7 safety recalls. Enter your VIN at NHTSA.gov to check whether the repairs were done on your car.

Was the 2021 Mercedes-Benz AMG GLC43 a good year?

Complaint data can't fully answer that, because counts aren't adjusted for sales. Compared with other AMG GLC43 model years, the 2021 has too little data to compare. Always get a pre-purchase inspection and check the VIN for open recalls.