NHTSA Complaint #11719310 — 2021 MERCEDES-BENZ GLB 250

The component that appears to have malfunctioned is the front axle integral carrier (front subframe) and the related front suspension geometry, as the vehicle now exhibits a persistent pull to the left and degraded steering stability after the dealer replaced the front lower control arms, engine mounts, and performed alignments; this area of the vehicle is fully available for inspection upon request. My safety and the safety of others were put at risk because the vehicle requires constant steering correction to avoid drifting left, creating a danger of unintended lane departure and loss of control, which aligns with the steering‑related risks described in NHTSA Recall 21V990 / MBUSA 2022070009, where failure of the integral carrier can impair steering and increase crash risk. The problem has been reproduced by me on every drive, though the dealer stated they “did not find anything,” despite alignment printouts showing front camber imbalance and lack of caster correction. The vehicle has been inspected twice by the authorized Mercedes‑Benz dealer, but they did not inspect or address the front axle integral carrier even though the recall documentation shows that corrosion or structural issues in this part can affect steering performance and connection to other components. There were no warning lamps or dashboard alerts; the symptoms began immediately after the dealer’s suspension and mount repairs, and the steering pull and unstable handling have continued ever since.