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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 report shattering while driving and having injuries from blowing glass.    This appears to be an ongoing problem with Mercedes, they want over $2000 to fix a common problem with their vehicles.

MERCEDES-BENZ GLB 250 2023 UNKNOWN OR OTHER

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 PSI at 40  Mercedes Benz of San Juan $300 diagnostic Cylinder head needs to be replaced.  Safety Risk - Twice I was almost hit because my car didn't take off. Problem has been confirmed by dealer. Not inspected by manufacturer, etc. Prior to failure there were no signs.  Check Engine light came on and that is when it got checked at 55, 715 miles, soon after warranty ended.

MERCEDES-BENZ GLB 250 2023 ENGINE

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 engine configuration, my VIN is excluded. The condition results in loss of power and creates a potential safety hazard while driving. The following codes are referenced in the Mercedes recall and by recorded by the auto repair shop that provided an estimate for the repair:   P1CEF85 - Injector injection quantity adjustment for cylinder balancing has almost reached the upper limit value at atleast one cylinder.  P1CE577 - Injector injection quantity adjustment for uniform mixture formation has detected an excessively lean mixture at atleast one cylinder.

MERCEDES-BENZ GLB 250 2023 POWER TRAIN

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. The services performed in December 2025 repairs included Cylinder Head Assembly to Replace Engine Cylinder Head Assemble due to multiple cylinder head fault codes, including misfire, injector injection, and mixture formation code. Cylinder 2 is leaking out of the exhaust valve. Camshaft replacement and rollers due to deep scoring on both intake and exhaust cams, not by cylinder two. Exhaust valve leaking from the head while the camshafts are scoring, leading to misfiring as well.

Cylinder repair dealership said it's a known issue but Mercedes Benz said they will not cover the repair.

2023 Mercedes-Benz GLB250 — vehicle data sourced from FuelEconomy.gov.

La Mercedes-Benz GLB250 (2023) è un SUV a trazione anteriore con un motore a benzina turbo da 2.0L che eroga 221 CV. Offre un buon equilibrio tra efficienza nei consumi e prestazioni, con un cambio automatico a 8 marce.

	2020	2021	2022	2023	2024	2025	2026
Prezzo	—	—	—	$37,700	$44,050	—	—
Cilindrata	2L	2L	2L	2.0L	2L	2L	2L
Tipo carburante	Benzina super	Super	Super	Premium	Benzina super	Benzina super	Benzina super
Trasmissione	Automatico (AM8)	Automatico (AM8)	Automatico (AM8)	8-speed automatic	Automatico (AM8)	Automatico (AM8)	Automatico (AM8)
Tipo di carrozzeria	SUV piccolo 2WD	Veicolo per scopi speciali 2WD	Veicolo per scopi speciali 2WD	SUV	Veicolo per scopi speciali 2WD	Veicolo per scopi speciali 2WD	Veicolo per scopi speciali 2WD

Mercedes-Benz GLB250 (2023) Specifiche