2016 Mercedes-Benz GLC 300 Problems & Recalls
Built from official NHTSA complaint and recall data · data through 07/12/2026
Source: U.S. NHTSA complaint & recall data. Complaints are unverified reports from vehicle owners — a complaint is not a confirmed defect.
Is this problem acknowledged?
The most-reported problem — Engine (28.8% of complaints) — recall and investigation status for this vehicle is currently unavailable.
Engine complaints here are 2.3× the median for that category across the 2583 model-years tracked on this site.
| Complaint category | Reports | Official status | Reference |
|---|---|---|---|
| Engine | 38 · 28.8% | not available | — |
| Service Brakes | 27 · 20.5% | not available | — |
| Fuel/propulsion System | 18 · 13.6% | not available | — |
| Air Bags | 12 · 9.1% | not available | — |
| Electrical System | 11 · 8.3% | not available | — |
| Steering | 7 · 5.3% | not available | — |
Recalled = an NHTSA safety recall covers this category, so a free repair exists. Under investigation = NHTSA has an open probe but no recall yet. Investigation closed = NHTSA examined it and closed the probe — this is not a defect finding; where a closed probe led to a recall we name the campaign. Not available = recall or investigation data could not be confirmed for this vehicle — it is not a “no”. Categories are matched by NHTSA's top-level component. Check your VIN at nhtsa.gov/recalls.
Complaints by component
Percentages are the share of the 132 complaints citing each component; one complaint can cite several components. “Unspecified / other” is NHTSA’s own catch-all category — we show it rather than hide it.
Recalls
No NHTSA recall campaigns are on file for this vehicle. New recalls can be issued at any time — check your VIN at nhtsa.gov/recalls.
What owners report
“The P052E error has popped up which requires the replacement of the PVC assembly. This is a known issue with these engines and causes the…”NHTSA complaint 11553798 — filed 11/06/2023 · ENGINE
“2016 GLC300 - Fault code P052E71 positive crankcase ventilation regulatory valve displayed on console. I reset code and it came up again in a few…”NHTSA complaint 11510134 — filed 03/04/2023 · ENGINE
“Check Engine light P052E came on while driving. No collision, normal conditions other than first very cold night of the season. Looked it up and…”NHTSA complaint 11499425 — filed 12/29/2022 · ENGINE
Excerpts are shortened and scrubbed of personal details; they are individual, unverified reports.
Complaint trend by year filed
Frequently asked questions
What are the most common problems with the 2016 Mercedes-Benz GLC 300?
Engine issues are the most-reported category, cited in 38 of 132 NHTSA complaints (28.8%), followed by service brakes (27), unspecified/other issues (21), fuel/propulsion system (18). Complaints are unverified owner reports.
How many complaints does the 2016 Mercedes-Benz GLC 300 have?
132 complaints were on file with NHTSA as of 07/12/2026. Of those, 9 involved a crash, 2 involved a fire, and 5 reported injuries. No deaths were reported.
Does the 2016 Mercedes-Benz GLC 300 have any recalls?
No NHTSA recall campaigns are on file for this vehicle. New recalls can be issued at any time — check your VIN at nhtsa.gov/recalls.
Has NHTSA acted on the 2016 Mercedes-Benz GLC 300's reported problems?
Recall or investigation data is partly unavailable for this vehicle right now — check your VIN at nhtsa.gov/recalls for the authoritative answer.
Is a complaint proof of a defect?
No. Complaints are reports submitted by consumers to NHTSA. NHTSA does not verify individual complaints, and a complaint is not proof that a defect exists.
