Total Complaints
4 filings
MERCEDES-BENZ G63 · model year
4 NHTSA complaints for this specific cohort.
NHTSA overall rating
Not crash-tested
New Car Assessment Program
The 2015MERCEDES-BENZG63 carries 4 consumer safety complaints in NHTSA's Office of Defects Investigation database for this specific model-year cohort. Within that volume, owners reported 0 crashes, 0 fires, 0 injuries, and 0 fatalities. No NCAP 5-star crash-test rating is available for this model year in the federal database.
Component-level analysis is where model-year complaints become actionable: the top complaint category for the 2015 G63 is electrical system with 2 filings, followed by engine (1) and structure:body (1). Concentration in one or two component groups is the classic signature of a systemic defect; a flat distribution usually reflects normal aging, warranty complaints, or isolated build-plant variability.
NHTSA currently has 15 investigation files overlapping the 2015 G63. Owners comparing this cohort against neighboring years should pair the counters above with the complaint-by-year trend on the parent model page — a spike in a single year often tracks to a platform refresh, a new transmission supplier, or an updated ECU calibration. Use the related-complaint feed below to read raw owner narratives before deciding whether any pattern here affects your specific use case.
Total Complaints
4 filings
Crashes Reported
0 reports
Source
NHTSA ODI
Federal complaints database
At or below the fleet median complaint volume.
| Component | Count |
|---|---|
| ELECTRICAL SYSTEM | 2 |
| ENGINE | 1 |
| STRUCTURE:BODY | 1 |
DIFFICULTY OPENING MAIN DOOR HANDLES. THEY ARE VERY FRAGILE AND I JUST HAD THEM REPLACED. THEY STICK WHEN OPENING. I SEE PREVIOUS MODELS HAVE SIMILAR ISSUES WITH THE DOOR HANDLES. IT COST $500-$600 EVERY TIME WE REPAIR THEM. *TR
Mileage: 36,100
2015 MERCEDES G63 WITH 27,000 MILES REQUIRES REPLACEMENT OF CYLINDER HEAD AND REPLACE VALVE SPRING RETAINERS DUE TO LEFT CYLINDER HEAD WITH EXCESSIVE LEAK DOWN.BEARING CAP BOLTS ,HEAD BOLTS ,HEAD GASKET FRONT TIMING COVER TIMING CHAINVALVE EXHAUST MANIFOLD STUDS AND NUTS,SPARK PLUGS .STATIONERY AND IN MOTION ON HIGHWAY
Mileage: 27,000
2015 MERCEDES G63 WITH 27,000 MILES REQUIRES REPLACEMENT OF CYLINDER HEAD AND REPLACE VALVE SPRING RETAINERS DUE TO LEFT CYLINDER HEAD WITH EXCESSIVE LEAK DOWN.BEARING CAP BOLTS ,HEAD BOLTS ,HEAD GASKET FRONT TIMING COVER TIMING CHAINVALVE EXHAUST MANIFOLD STUDS AND NUTS,SPARK PLUGS .STATIONERY AND IN MOTION ON HIGHWAY
Mileage: 27,000
AFTER 14 MONTHS OF OWNERSHIP AND 12,500 MILES, THE AUXILLARY BATTERY STOPPED WORKING. WITHIN 5 DAYS OF THE WARNING LIGHT INDICATING NO AUXILLARY BATTERY, VEHICLE STALLS WHILE DRIVING (IN MOTION AND STATIONARY), FEATURES LIKE DISTRONIC (CRUISE CONTROL THAT FEATURES DISTANCE FROM THE CAR IN FRONT OF YOU) STOPPED WORKING. BOTH OF THESE ARE SAFETY CONCERNS AS THEY CAN CAUSE SERIOUS ACCIDENTS WHEN THEY OCCUR. DEALERSHIP INFORMED ME THAT THIS WAS A COMMON OCCURRENCE ON 2015 MODELS. THEY ALSO INFORMED ME THAT THIS WOULD BE A RECURRING PROBLEM THROUGHOUT OWNERSHIP. I DO NOT FEEL SAFE WITH MY CHILDREN IN THE CAR WITH THIS TYPE OF DEFECT.
Mileage: 12,500
Data as of 2025. Sources: NHTSA Office of Defects Investigation (ODI) complaints database, NHTSA recall campaign API, NHTSA NCAP crash-test ratings, and NHTSA FARS for fatality cross-reference.
Read our methodology — how this data is sourced, computed, and verified.