2012 Mercedes-Benz Gl450: Reliability Data
When Do Complaints Happen?
Distribution of NHTSA complaints by vehicle mileage at time of report.
What Fails?
Most reported component issues from NHTSA complaints.
Severity Assessment
Sample Complaint Reports
"WHILE DRIVING AT HIGHWAY SPEED IN THE LEFT LANE OF A DIVIDED HIGHWAY, THE VEHICLE SUDDENLY AND WITHOUT NOTICE LOST ENGINE POWER AND POWER STEERING. THE WEATHER CONDITION WAS LIGHT RAIN AND THE ROAD WAS WET. I WAS ABLE TO MOVE OVER TO THE SHOULDER OF THE HIGHWAY AND RESTART THE ENGINE BUT IT DIED W..."
"WHILE DRIVING AT HIGHWAY SPEED IN THE LEFT LANE OF A DIVIDED HIGHWAY, THE VEHICLE SUDDENLY AND WITHOUT NOTICE LOST ENGINE POWER AND POWER STEERING. THE WEATHER CONDITION WAS LIGHT RAIN AND THE ROAD WAS WET. I WAS ABLE TO MOVE OVER TO THE SHOULDER OF THE HIGHWAY AND RESTART THE ENGINE BUT IT DIED W..."
"ON 01/08/14, A FEMALE DRIVER OF A 2012 GL 450 WAS STATIONARY, IN THE GARAGE, WITH ENGINE RUNNING. BEFORE SHE EXITED THE VEHICLE TO CHECK ON HER CHILD IN THE REAR OF THE VEHICLE, SHE PRESSED THE PARK BUTTON ON THE DRIVE SELECT ELECTRONICALLY-CONTROLLED COLUMN SHIFTER. AS SHE EXITED AND WALKED AROUND ..."
Source: NHTSA ODI Complaints Database. Names and identifying details omitted.
When Were Complaints Filed?
Number of complaints by the year the issue occurred.
When Does Each Component Fail?
Median mileage at complaint for top components.
Where Are Complaints Coming From?
Top states by complaint count.
Mercedes-Benz Gl450 — Other Years
See how this model compares across different model years.
Data source: View this vehicle on NHTSA.gov | NHTSA ODI Complaints Database. Public domain.
Methodology: Complaint counts and mileage distributions are computed directly from consumer-reported NHTSA complaints. This data represents reported issues, not failure rates — vehicles without complaints are not represented. Full methodology.
Data through: 2026-03-28
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