FaultScore

Mercedes Benz GLC300 problems

Owners have filed 305 complaints about the Mercedes Benz GLC300 with NHTSA across model years 2016 to 2017. More of them are about the engine & cooling than anything else.

Every Mercedes Benz GLC300 year, graded

The grade compares each year against the rest of this model's own run — never against another car. Click any bar or row to open that year's report.

Complaints filed with NHTSA, by model year. Bar colour is the FaultScore grade: A B C D F ungraded
Year Grade Complaints Crashes Fires Median miles Most reported
2017 135 6 3 25,500 Engine & Cooling
2016 170 14 3 14,000 Engine & Cooling

What breaks on a Mercedes Benz GLC300

Across every model year on file. Follow a row for that part's complaints and the year it was worst.

Engine & Cooling 80 26.2%

Worst in 2016

Worst in 2016

Worst in 2016

Brakes 31 10.2%

Worst in 2016

Worst in 2017

Airbags 22 7.2%

Worst in 2016

Transmission & Drivetrain 13 4.3%

Worst in 2017

Windows, Mirrors & Wipers 13 4.3%

Worst in 2017

Seat Belts 13 4.3%

Worst in 2017

Steering 11 3.6%

Worst in 2016

Body & Structure 5 1.6%

Worst in 2016

Tires 4 1.3%

Worst in 2017

Driver Assist & Collision Avoidance 4 1.3%

Worst in 2017

Acceleration & Cruise Control 3 1.0%

Worst in 2016

Complaints filed over time

Every complaint about every Mercedes Benz GLC300, by the month it reached NHTSA.

Apr 2016 peak 12 Jun 2026

Compare the Mercedes Benz GLC300

Side by side on complaint history. Remember that raw totals track how many were sold as much as how good they were.