2021 MERCEDES-BENZ A 220 4MATIC Complaints

View complaints related to 2021 MERCEDES-BENZ A 220 4MATIC. The complaints found here are submitted by actual consumers with first hand experience. There are more than 10 complaints submitted for the 2021 MERCEDES-BENZ A 220 4MATIC. You can submit your own complaint to the NHTSA or call the Hotline, Monday-Friday 8am to 8pm at (888) 327-4236, TTY: (800) 424-9153.

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  • 2021 MERCEDES-BENZ A 220 4MATIC
    - Saint Michael, MN

    My 2021 Mercedes-Benz A220 (M260 2.0L engine) triggered diagnostic fault code P052E, indicating a failure of the Positive Crankcase Ventilation (PCV) regulator valve / intake line assembly. Failure of this valve disrupts crankcase pressure, causing unmetered air intake, lean-running conditions, and engine hesitation/stalling risks. Mercedes-Benz issued a 15-year/150,000-mile extended warranty campaign for this exact PCV failure on M274 engines, but has excluded M260 engines despite identical failure modes. The manufacturer has not remedied this known design defect, creating potential drivability and engine pressure hazards.

    Source: NHTSA WEB SITE