Your vehicle report

2021 Mercedes-Benz GLC 300

The problems owners report. The recalls to check. The evidence behind each.

NHTSA data through October 2026View original NHTSA data Change vehicle

Your vehicle at a glance

Complaint patterns and official recall records, kept distinct.

Owner complaints
67
Received Mar 2021 to Oct 2026
Official recalls listed
9
Naming this model year; check your VIN for applicability
BrakeNews flagged problems
0
Statistical signals, not official defect findings or recalls

Owner reports

Most reported problems

  1. 1
    Headlights dim or fail at night8 complaints · 12% of this vehicle’s complaints
  2. 2
    Head gasket leaks coolant into engine7 complaints · 10% of this vehicle’s complaints
  3. 3
    Glass shatters or cracks without impact4 complaints · 6.0% of this vehicle’s complaints
See all reported problems

Official NHTSA records

Recalls to check

  • Recall #24V070000Mercedes-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."
  • Recall #23V445000Mercedes-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.
View recall details

BrakeNews signals

Flagged complaint patterns

Unusual complaint patterns with no matched recall yet. A flag does not mean a recall will happen.

No problems currently meet BrakeNews’s flagging criteria. This is not a safety rating.

How flags are identified

Complaint counts reflect reports submitted to NHTSA, not failure rates or a reliability ranking. Reported in these complaints: 2 crashes, 2 fires, 1 person injured, 0 deaths.

Explore by system

Where do owners report problems?

Choose an area on the car or a system below to explore the reported problems.

Schematic car with five system shortcutsGeneric side view, with the front on the left. Numbered links explore engine, brakes, steering, electrical, and body complaints. Text controls below provide the same choices.12345FRONTSCHEMATIC VIEW

Illustrative only; not this vehicle’s exact design. Areas represent complaint categories, not confirmed defective parts.

View selected problems

Showing all 6 listed problems by system.

Engine & powertrain

1 more problem

Brakes

No problems in this category meet this page’s listing criteria. This does not establish that the system is free of problems.

Electrical & lights

Airbags, belts & seats

No problems in this category meet this page’s listing criteria. This does not establish that the system is free of problems.

Steering, suspension & tires

No problems in this category meet this page’s listing criteria. This does not establish that the system is free of problems.

Body, doors & glass

Driver assistance

No problems in this category meet this page’s listing criteria. This does not establish that the system is free of problems.

Other

No problems in this category meet this page’s listing criteria. This does not establish that the system is free of problems.

Complaint history

When NHTSA received these reports. Changes in reporting alone do not establish a change in failure rates.

Complaints received about the 2021 Mercedes-Benz GLC 300
3
Show as a table
MonthComplaints
March 20213
April 20211
May 20210
June 20212
July 20212
August 20210
September 20212
October 20210
November 20211
December 20210
January 20220
February 20220
March 20221
April 20220
May 20221
June 20221
July 20220
August 20220
September 20222
October 20220
November 20220
December 20221
January 20231
February 20230
March 20230
April 20230
May 20230
June 20230
July 20230
August 20230
September 20231
October 20230
November 20230
December 20232
January 20243
February 20240
March 20240
April 20240
May 20240
June 20241
July 20240
August 20241
September 20240
October 20243
November 20242
December 20243
January 20250
February 20251
March 20253
April 20252
May 20252
June 20251
July 20251
August 20252
September 20251
October 20252
November 20252
December 20251
January 20263
February 20261
March 20263
April 20260
May 20262
June 20260
July 20260
August 20262
September 20263
October 20261
Total67

Problems owners report

Listed groups have at least 3 complaints. The page includes the 20 largest groups plus any additional flagged groups; some complaints are not assigned to a group.

ProblemComplaintsShareShare ratioStatus
Headlights dim or fail at night812%13.2×NHTSA recall #22V261000, #24V070000
Head gasket leaks coolant into engine710%5.2×
Glass shatters or cracks without impact46.0%–
Unintended acceleration despite braking46.0%–
Fuel tank or line leaks gasoline34.5%–
Fuel pump fails and engine stalls34.5%–NHTSA recall #23V445000

AI groups complaints by meaning; the groups are approximate. Share ratio compares the problem’s share of this vehicle’s complaints with its share on other vehicles over the last 24 months (shown from 3 recent complaints). A 2× ratio means twice the complaint share, not twice the failure risk. Flags mark unusual shares or recent surges after an AI review of the complaint content. “First signal” does not mean the pattern has persisted continuously.How recall estimates are calculated.

Recalls

  • NHTSA recall #24V070000February 2, 202415,502 vehicles affected

    exterior lighting: headlights

    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."

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

    Remedy

    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.

  • NHTSA recall #23V445000June 26, 2023143,551 vehicles affected

    fuel system, gasoline: delivery: fuel pump

    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.

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

    Remedy

    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.

  • NHTSA recall #22V365000May 20, 2022242,722 vehicles affected

    communication: auto crash notification; electrical system: software

    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.

    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.

    Remedy

    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.

  • NHTSA recall #22V261000April 15, 2022129 vehicles affected

    exterior lighting: headlights

    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.

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

    Remedy

    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.

  • NHTSA recall #21V527000July 12, 2021542 vehicles affected

    air bags: sensor: side impact

    Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2021 CLS450, AMG E53, AMG CLS53, E350, E450, AMG GT43, AMG GT53, 2020 S450, S560, G550, AMG GLC63, 2020-2021 GLC300, and AMG G63 vehicles. The side crash sensor connectors may come loose, which could delay the activation of air bags and seatbelts during a side impact crash.

    Air bags and seatbelts that don't function as intended can increase the risk of injury during a crash.

    Remedy

    Dealers will inspect and replace as necessary, the side impact crash sensors, free of charge. Owner notification letters were mailed on September 3, 2021. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2021070032/33.

  • NHTSA recall #21V354000May 14, 2021343,191 vehicles affected

    back over prevention: sensing system: camera; electrical system: software

    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."

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

    Remedy

    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.

  • NHTSA recall #21V230000April 1, 20218,634 vehicles affected

    air bags: sensor: occupant classification; seat belts: pretensioner; seats

    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.

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

    Remedy

    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.

  • NHTSA recall #21V072000February 12, 202167 vehicles affected

    communication; communication: auto crash notification

    Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2017-2019 C300, E300, 2018-2020 CLA250, 2020 CLS450, AMG E53, AMG GT53, GLE450, 2018 AMG E63, AMG GTA, 2017-2020 GLA250, GLC300, 2019 GLC350, AMG GLC43, 2017-2018 GLE350, 2019 AMG GLC 43, GLC350, GLE400, 2017 GLS450, S550, C300 Cabrio, and 2018-2019 S560 vehicles. On June 18, 2021, an additional 9 vehicles were added, including certain 2021 GLA250, GLC300, 2018 S450, E400, and 2017 CLA250 vehicles. The communication module might have been inadvertently deactivated during a service visit, which could have disabled the Emergency Call (eCall) function.

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

    Remedy

    MBUSA will notify owners, and dealers will inspect the communication module and activate it, if necessary, free of charge. The recall began March 31, 2021. Letters for the owners of the 9 additional vehicles were mailed July 9, 2021. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2021030005.

  • NHTSA recall #21V058000February 5, 20211,292,258 vehicles affected

    communication: auto crash notification; electrical system: software

    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.

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

    Remedy

    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.

Other model years

About this data

NHTSA complaints and recalls through October 2026. Complaints are counted once each, however many components they name. Original complaints are on NHTSA's page for the 2021 Mercedes-Benz GLC 300.

Problem groups are formed by AI and may be approximate. BrakeNews flags unusual complaint patterns; they are not official defect findings. Investigation reports are written and checked by AI, with no human review. Owner reports do not establish that a defect exists.

Read the methodology and track record · Check current recalls by VIN