2012 Mercedes-Benz GLK350 Brakes Problems
- Complaints
- 6about this part
- Share
- 4%of 167 total for the year
- Median mileage
- 41,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 6 complaints about the brakes of the 2012 Mercedes-Benz GLK350, 4% of the 167 complaints for this model year. Where a mileage was given, the median is 41,000 miles. 2 of these say a crash was involved, according to the filers.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“While parking my car in a garage, it accelerated. Upon applying the brakes, it speeded up causing me to crash into a concrete barrier. Air bag did not deploy.”
NHTSA complaint #10810779, filed 2015-12, 41,000 miles“My rear subframe is rotted out but won't be replaced under warranty because there are no rust holes in the metal. The rust is very extensive, and the car isn't safe to drive. The rear metal brake lines are also rotten and need to be replaced. I've owned many cars older than this one with more miles, and I've never had rusted-out brake lines. This is a safety issue.”
NHTSA complaint #11607686, filed 2024-08“This vehicle had an air bag recall some time ago. In approximately early may 2016 we called and the dealer said that the manufacturer had not yet supplied it with any replacement air bags. The dealer said that a new recall notice would be sent out when the airbags were in stock. No new notice has as yet arrived. The car is presently at the dealership for a serious matter explained in a related complaint, and we are told that no work has been done on the vehicle. Therefore the air bag recall is still outstanding.”
NHTSA complaint #10889149, filed 2016-07“The cpa+ (collision prevention assistance) brake system fitted to our 2012 glk 350 malfunctioned. On the freeway, without any traffic in front of our car for more than 100 feet, the automatic brakes jolted the car slowing it down suddenly from approx 70mph to approx 55mph. The car was immediately taken to the dealer for repair and early service under an extended service contract. We were informed that the car is ready and picked it up having been told that the problem is fixed. Subsequently, the problem recurred. …”
NHTSA complaint #10889164, filed 2016-07“Rupture of left rear and left front brake lines 1/26/24,8/30/24. Both times the failure was unannounced while driving the car and put my life in danger.”
NHTSA complaint #11612830, filed 2024-09Related service bulletins
- 11038186Sep 22, 2026Complaint Repeat workshop visit for vehicle vibration while braking from 60MPH. NOTE: Although the symptom is similar to a tire or wheel vibration, it is usually readily…
Brakes: other model years
Other parts of the 2012 Mercedes-Benz GLK350
132 complaintsFuel system
13 complaintsOther or unknown
7 complaintsElectrical system
4 complaintsSuspension
4 complaintsSeats
3 complaintsSteering
3 complaintsTransmission and drivetrain
3 complaintsEngine
2 complaintsBody and structure
2 complaintsWheels
2 complaintsElectronic stability control
1 complaints
← All problems reported for the 2012 Mercedes-Benz GLK350
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Nov 1, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology