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NHTSA-Verified · Common Problems

2017 Mercedes Benz Glc Class
Common Problems

Ranked from 53 federal NHTSA complaints. Every problem links to the complaint IDs behind it.

1
Safety
5
High severity
5
Medium
1 problem on this vehicle involve a crash, fire, or injury risk. If you are experiencing one, stop driving and have it inspected.

11 Common Problems

Ordered by how often owners reported each one to NHTSA. The bar shows how common a problem is relative to the most-reported on this vehicle. Expand any problem to see the federal complaint IDs.

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  1. 1

    Positive Crankcase Ventilation (PCV) System Failure

    17complaints
    High severityFuel system

    The PCV system fails, causing the check engine light to illuminate and potentially leading to engine stalling or seizing.

  2. 2

    Engine Light On Due to Various Issues

    12complaints
    High severityEngine

    The check engine light illuminates due to various issues, such as the PCV system failure or other engine-related malfunctions.

  3. 3

    Panoramic Sunroof Failure

    8complaints
    High severityOther

    The panoramic sunroof has exploded or detached from the vehicle during operation.

  4. 4

    Seat Belt Retractor Malfunction

    6complaints
    Medium severityOther

    The seat belt retractor malfunctions, preventing the seat belt from extending or retracting properly.

  5. 5

    Airbag Malfunction

    5complaints
    Safety riskElectrical

    The airbags fail to deploy properly, indicated by error messages or malfunction warnings.

  6. 6

    Recall Campaign Issues with Engine and Electrical System

    5complaints
    Medium severityElectrical

    Issues with the electrical system and engine cooling, leading to delayed repair times and unavailable parts.

  7. 7

    Electrical System Issues

    3complaints
    Medium severityElectrical

    Various electrical system issues arise, such as the odometer fraud or unexpected loss of power while driving.

  8. 8

    Transmission Malfunction

    3complaints
    High severityTransmission

    The transmission fails to shift gears properly, causing the vehicle to stall or not accelerate as intended.

    $200–$2,500est. drivetrain diagnosis + repair · 1–8 hrs labor
    Get local quotes
  9. 9

    Engine Failure at High Mileage

    2complaints
    High severityEngine

    The engine fails catastrophically at around 60,000 miles, often requiring replacement of the entire engine.

    $4,000–$8,000est. engine replacement · 12–20 hrs labor
    Get local quotes
  10. 10

    Fuel Line Leak

    2complaints
    Medium severityFuel system

    The fuel line leaks near the driver seat, filling the cabin with fuel vapors.

    $300–$1,200est. fuel line/tank repair · 2–6 hrs labor
    Get local quotes
  11. 11

    Steering Column Malfunction

    2complaints
    Medium severitySteering

    The steering column stops moving up and down, leading to temporary loss of steering control.

    $200–$1,500est. power-steering / eps repair · 1–6 hrs labor
    Get local quotes

Other years & sources

2016 Mercedes Benz Glc ClassAll NHTSA complaints for this vehicle →

Data source: U.S. National Highway Traffic Safety Administration (NHTSA) owner complaints and recalls. Problems are clustered and ranked from the complaint record; occurrence counts reflect corroborating complaints, not total incidence. Vehicle image is illustrative. Repair-cost figures are typical U.S. independent-shop ranges (parts + labor) for the class of repair shown — actual quotes vary by region, engine, and diagnosis; always confirm with a local shop.