AutoUtility currently tracks 12 official NHTSA owner defect complaints for the 2023 Mercedes-Benz GLB. Engine & Cooling issues are the most frequently reported category, appearing in 3 complaints (25% of submitted records). Zero crashes, fires, injury reports, or fatality reports are cited across these complaint records.
- • Total NHTSA Complaints: 12 reports
- • #1 Reported Problem Area: Engine & Cooling (3 reports • 25% of submitted complaints)
- • Secondary Problem Areas: Powertrain & Transmission (3), Visibility, Wipers & Glass (2)
- • Crash-Citing Complaints: 0 filings
- • Fire-Citing Complaints: 0 filings
- • Complaints Reporting Injuries / Fatalities: 0 injury filings • 0 fatality filings
Most Reported Problems for 2023 Mercedes-Benz GLB
Top automotive subsystem defect categories ranked by unique owner complaint volume in federal records
Engine & Cooling
Powertrain & Transmission
Visibility, Wipers & Glass
Brakes & Traction Control
Fuel & Propulsion System
Recent NHTSA Owner Reports for 2023 Mercedes-Benz GLB
Representative defect filings submitted by owners to the NHTSA Office of Defects Investigation
"Safety Risk - Twice I was almost hit because my car didn't take off. O'REILLY Veri Scan Results - Free Emissions Status: Red Primary DTC: Mixture Formation (Cylinder 4) is irregular P219F: Fuel injectors measure and atomize fuel mixed with incoming air and sent to combustion chambers. Cylinder 4..."
"My 2023 Mercedes-Benz GLB 250 is experiencing engine misfires and fault codes consistent with a known cylinder head defect that is the subject of a recall affecting 2022 and earlier models. A certified mechanic has confirmed the issue aligns with the recall defect. Despite identical symptoms and..."
"Reporting because I see reports on other searches of this happening on other Mercedes Benz various years and models, the front stationary roof panel has shattered, cracked. I was lucky, my vehicle is only cracked (leaving my windshield components open to the weather , ie rain in Washington). Others..."
"On December 19, 2025, the vehicle showed lights that a sparkplug had misfired. The dealer notified me that in less than two full years of having the 2023 vehicle, it required a complete engine rebuild. This is the third major engine problem I have had with the vehicle with more than $20K in fees...."
"Cylinder repair dealership said it's a known issue but Mercedes Benz said they will not cover the repair."
Complaint History for Mercedes-Benz GLB
Reported defect complaint volume across sibling model years (2020–2026)
| Model Year | NHTSA Complaints | Crash Reports | Safety Recalls | Detailed Report |
|---|---|---|---|---|
| 2020 Mercedes-Benz GLB | 57 | 2 | 20 | View 2020 Problems → |
| 2021 Mercedes-Benz GLB | 7 | 0 | 12 | View 2021 Problems → |
| 2022 Mercedes-Benz GLB | 13 | 2 | 1 | View 2022 Problems → |
| 2023 Mercedes-Benz GLB Current Page | 12 | 0 | 1 | Current |
| 2024 Mercedes-Benz GLB | 0 | 0 | 2 | View 2024 Problems → |
| 2025 Mercedes-Benz GLB | 0 | 0 | 2 | View 2025 Problems → |
| 2026 Mercedes-Benz GLB | 1 | 0 | 1 | View 2026 Problems → |
Detailed NHTSA Component Breakdown for 2023 Mercedes-Benz GLB
Complete distribution of consumer defect reports across all 9 granular NHTSA system and subsystem classifications
| Vehicle Component / System | Total Complaints | Crash Reports | Fire Reports | Reported Injury Entries | Reported Fatality Entries |
|---|---|---|---|---|---|
| Engine NHTSA category: ENGINE | 3 | 0 | 0 | 0 | 0 |
| Other / Uncategorized NHTSA category: UNKNOWN OR OTHER | 2 | 0 | 0 | 0 | 0 |
| CARRY HANDLE, SHELL, BASE,OTHER/I AM NOT SURE | 1 | 0 | 0 | 0 | 0 |
| Powertrain NHTSA category: POWER TRAIN | 1 | 0 | 0 | 0 | 0 |
| POWER TRAIN,ENGINE,FUEL/PROPULSION SYSTEM | 1 | 0 | 0 | 0 | 0 |
| POWER TRAIN,SERVICE BRAKES | 1 | 0 | 0 | 0 | 0 |
| Service Brakes NHTSA category: SERVICE BRAKES | 1 | 0 | 0 | 0 | 0 |
| Visibility / Glass NHTSA category: VISIBILITY | 1 | 0 | 0 | 0 | 0 |
| Visibility & Wipers NHTSA category: VISIBILITY/WIPER | 1 | 0 | 0 | 0 | 0 |
The complaint records on this page are retrieved directly from the NHTSA Office of Defects Investigation (ODI) public database.
Local Production Store Compiled: August 2026 • Deterministic Audited Dataset • Zero Dynamic External API Runtime Latency.