YearToAvoid

2017 Mercedes-Benz Glc300 Reliability Data: Problems & Recalls

Caution The 2017 Mercedes-Benz Glc300 has 98 complaints, a complaint index of 44, and ranks 6th worst out of 10 model years. NHTSA lists 12 recall campaigns, and the verdict is capped at Caution because of 11 recall campaigns requiring a dealer visit.

Based on NHTSA complaints per model-year, not a reliability rating. Methodology

YearToAvoid Scorecard

Complaint Index
44/100
#6 of 10 Glc300 years
Verdict
Caution
vs. other years of this model
Complaints
98
unique NHTSA reports
Recalls
12
distinct NHTSA campaigns
Crashes
3
reported in complaints
Fires
2
Injuries
2
Top issue
Engine
Best nearby year
2025
rated Good
NHTSA overall rating
Not rated
EPA combined MPG
24
22 city / 28 hwy
Injuries / deaths
2 / 0

Top 2017 Mercedes-Benz Glc300 problems

Share of this year’s NHTSA complaints by component group. Groups with 15+ complaints have their own page.

  1. Engine38 (39%)
  2. Electrical System16 (16%)
  3. Fuel System15 (15%)
  4. Other12 (12%)
  5. Airbags10 (10%)
  6. Seat Belts8 (8%)
  7. Visibility & Wipers8 (8%)
  8. Transmission & Powertrain7 (7%)
  9. Brakes5 (5%)
  10. Collision Avoidance & Cameras4 (4%)

A complaint can list more than one component, so shares add up to more than 100%. Shares are % of complaints.

What owners report

  • Owners describe the engine catching fire, in one case while driving and in another while parked in the driveway.
  • Some report the vehicle suddenly veering to one side at low speed and crashing, with airbags deploying.
  • Others describe the front collision avoidance system failing to stop the vehicle before hitting another car, with airbags not deploying.
  • Several owners report brakes squealing shortly after purchase and long waits for replacement parts.
  • Multiple owners report long delays getting parts for the electrical system, engine, and engine cooling recall (campaign 17V114000).
  • Some owners report delays completing the Takata airbag recall (campaign 17V627000) due to parts unavailability.
2017 Mercedes-Benz Glc300 complaints: complaints filed per quarter72017 Q12018 Q12020 Q22021 Q32022 Q32023 Q32024 Q32025 Q3
98 complaints filed with NHTSA from 2017 Q1 to 2026 Q1; peak 2022 Q2 (7).

2017 Mercedes-Benz Glc300 recalls

12 NHTSA recall campaigns list this model year.

  1. NHTSA 23V854000Dec 15, 2023Structure & Body2,976 vehicles

    Structure:body:roof and pillars

    Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2014-2020 C-Class, CLA, GLA, S-Class, GLC, and GLE vehicles. Please refer to MBUSA's recall report for specific vehicle details. The front roof panel located between the windshield and the panoramic sunroof may not have been bonded correctly to the vehicle during a prior repair, allowing the front panel to detach from the vehicle.

    Risk: A detached roof panel can become a road hazard, increasing the risk of a crash.

    Remedy: Dealers will replace the front panel, free of charge. Owner notification letters were mailed on August 2, 2024. Owner notification letters will be mailed in phases, on, March 22,2024, and August 2, 2024. Owners may contact MBUSA customer service at 1-800-367-6372. This recall is an expansion of NHTSA recall number 21V-197.

  2. NHTSA 21V197000Mar 19, 2021Structure & Body15,096 vehicles

    Structure:body:roof and pillars

    Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2017-2020 C300 Coupe, C43 Coupe AMG, C43 AMG, 2015-2020 C300, GLA250, 2016-2018 C350e, CLA45 Coupe AMG, 2015 C400, S65 AMG, 2015-2019 C63 AMG, 2016 C450, 2015-2016 GLA45 AMG, S600, 2016-2020 GLC300, 2017-2019 GLC43 AMG, GLE43 Coupe AMG, 2014-2019 CLA250 Coupe, 2014-2015 CLA45 AMG, 2018 GLC63 AMG, 2014-2017 S550, 2018-2020 S450, 2016-2019 GLE63 Coupe AMG, 2016 GLE450 Coupe, 2014-2020 S63 AMG, 2018-2019 S560, and 2019 GLC350e vehicles equipped with a panoramic sunroof. The front roof panel located between the windshield and the panoramic sunroof may not have been bonded correctly to the vehicle during a prior repair.

    Risk: The adhesive bonding of the front panel might deteriorate, possibly causing the front panel to detach from the vehicle and become a road hazard, increasing the risk of a crash.

    Remedy: Mercedes-Benz dealer will remove the bonded panel and will install a new front panel by following the detailed repair instructions and using the approved primer, cleaner and adhesive, free of charge. Owner notification letters were mailed on September 3, 2021 and October 26, 2021. Owners may contact MBUSA customer service at 1-800-367-6372.

  3. NHTSA 21V072000Feb 12, 2021Other67 vehicles

    Communication

    Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2017-2019 C300, E300, 2018-2020 CLA250, 2020 CLS450, AMG E53, AMG GT53, GLE450, 2018 AMG E63, AMG GTA, 2017-2020 GLA250, GLC300, 2019 GLC350, AMG GLC43, 2017-2018 GLE350, 2019 AMG GLC 43, GLC350, GLE400, 2017 GLS450, S550, C300 Cabrio, and 2018-2019 S560 vehicles. On June 18, 2021, an additional 9 vehicles were added, including certain 2021 GLA250, GLC300, 2018 S450, E400, and 2017 CLA250 vehicles. The communication module might have been inadvertently deactivated during a service visit, which could have disabled the Emergency Call (eCall) function.

    Risk: A disabled eCall system would prevent a vehicle occupant from contacting emergency services through the call center in an emergency, potentially delaying emergency responders and increasing the risk of injury.

    Remedy: MBUSA will notify owners, and dealers will inspect the communication module and activate it, if necessary, free of charge. The recall began March 31, 2021. Letters for the owners of the 9 additional vehicles were mailed July 9, 2021. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2021030005.

See all 12 recalls for the 2017 Mercedes-Benz Glc300 →

2017 Mercedes-Benz Glc300 fuel economy and fuel cost

City
22 MPG
Highway
28 MPG
Combined
24 MPG
Annual fuel cost (EPA)
$3,300
15,000 mi/yr
Fuel
Premium
Current regular gas
$4.32/gal
national avg.

EPA figures; median across configurations of this model year. Estimate your own cost with the fuel cost calculator.

2017 compared with other Glc300 years

Complaint Index by model year (0 = fewest issues, 100 = most)02550751002016201720182019202020212022202320242025
Complaint Index: 0 = fewest issues, 100 = most, relative to other years of this model. Avoid Caution Good Best
YearVerdictIndexComplaintsRecallsMPG
2016Avoid1001331224
2017Caution44981224
2018Caution22871224
2019Caution11471224

All Mercedes-Benz Glc300 years: best and worst →

Frequently asked questions

Is the 2017 Mercedes-Benz Glc300 reliable?
It has a complaint index of 44 and ranks 6th worst among 10 model years of the Glc300, with 98 NHTSA complaints. It carries a Caution verdict, partly because of 12 recall campaigns.
What problems does the 2017 Glc300 have?
The top problem area is Engine, making up 39% of complaints, followed by Electrical System at 16% and Fuel System at 15%. Median mileage at failure for engine complaints is 35,500.
Does the 2017 Glc300 have recalls?
Yes, NHTSA lists 12 recall campaigns for the 2017 Glc300, covering seat belts, visibility/wipers, electrical system, and structure/body components.
How does the 2017 Glc300 compare to other years?
Its complaint index of 44 is better than the 2016 model (100, Avoid verdict) but worse than 2018 (22) and 2019 (11), both rated Caution.
Why is the 2017 Glc300 rated Caution instead of Good?
Its verdict is capped at Caution because of 11 recall campaigns requiring a dealer visit, despite a moderate complaint index of 44.

Sources: NHTSA Office of Defects Investigation complaint and recall databases; U.S. EPA fuel economy data; NHTSA 5-Star Safety Ratings. Complaints are unverified owner reports.

Data updated Sep 24, 2026. Read the methodology and data sources. The Complaint Index is based on NHTSA owner complaints and recalls; it is not a reliability rating.