general problems of the 2012 Mercedes Benz GLK350

Three problems related to suspension have been reported for the 2012 Mercedes Benz GLK350. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2012 Mercedes Benz GLK350 based on all problems reported for the 2012 GLK350.

1 Suspension problem

Failure Date: 11/24/2025

I brought my car in to my local mechanic and was told my rear suspension was corroded. He said it would cost around five thousand dollars to repair. I researched online and found mercedes did not have a recall but has extended the warranty and will cover the repair to the rear suspension. The mercedes dealer called me and told me my brake lines were rusted out and needed replacement and that it was not covered by the extended warranty and would cost thirty five hundred dollars. In all my years of driving, I have never had the brake lines rust out on a vehicle and can't imagine that this is not related to the suspension issue. I have done some research and seen many mercedes owners have had the same complaint. I believe Mercedes Benz should be responsible for this repair just like they are responsible for the corrosion with the rear suspension.

2 Suspension problem

Failure Date: 08/09/2024

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.

3 Suspension problem

Failure Date: 10/20/2020

Car shuttered when accelerating , vibrates when at stop lights. Got inspection torque converter clutch slipping dealership recommend transmission replacement based on mileage 150k. Oil cooler leaking, centrifuge leaking, motor mounts collapsed. Mb is aware of issue, but only want to address certain vins. Mb corp suggested I contact the dealership to get corrected only assistance they offered incentive buy a new car. Seen many service bulletins on this issue.


Other Suspension related problems of the 2012 Mercedes Benz GLK350



GLK350 Service Bulletins
GLK350 Defect Investigations