2021 Mercedes-Benz GLC 300 exterior lighting problems
10 owner complaints filed with NHTSA name the exterior lighting on the 2021 Mercedes-Benz GLC 300 — 16% of all complaints for this model year.
What owners report
“Headlight is defective and is filled with condensation which has caused the entire light to fail. The problem has been confirmed by a independent service center. The light has not been inspected by a manufacturer however the manufacturer was contacted and denied that a recall exists however other…”
filed Mar 13, 2026
“The contact owns a 2021 Mercedes-Benz GLC300. The contact stated that the passenger’s side headlight was developing fog, causing the light to be dim. The vehicle was taken to the dealer, who diagnosed the vehicle and determined that the headlight needed to be replaced. The vehicle was not repaired…”
filed Jan 13, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related recalls
- Headlights may be incorrectly adjusted too high and create a glare for oncoming trafficCampaign 24V070000 · Feb 2, 2024
- Electrical connection for the headlights may not be watertight, which can result in…Campaign 22V261000 · Apr 15, 2022
Exterior Lighting problems in other GLC 300 years
| Year | Reports | Share |
|---|---|---|
| 2024 GLC 300 | 3 | 14% |
| 2023 GLC 300 | 10 | 18% |
| 2020 GLC 300 | 5 | 7% |
| 2018 GLC 300 | 1 | 1% |
Other reported problem areas on the 2021 Mercedes-Benz GLC 300
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.