AI Damage2014 Mercedes-Benz AMG ML63: common problems
Owners of the 2014 Mercedes-Benz AMG ML63 filed 3 complaints with NHTSA, most often about engine and engine and cooling. Details by component below, with sources.
Key figures
- Owner complaints
- 3
What fails most often
- 1 Engine 67% of all complaints
- 2 Engine and cooling 33% of all complaints
- 3 Fuel system 33% of all complaints
- 4 Service brakes 33% of all complaints
- 5 Suspension 33% of all complaints
- Engine: 2 complaints (67% of all).
- Engine and cooling: 1 complaints (33% of all).
- Fuel system: 1 complaints (33% of all).
- Service brakes: 1 complaints (33% of all).
- Suspension: 1 complaints (33% of all).
Symptoms owners describe
How many of the 3 NHTSA complaints mention each symptom (automatic count from complaint text; one complaint can mention several).
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Engine | 2 | 0 | 0 |
| Engine and cooling | 1 | 0 | 0 |
| Fuel system | 1 | 0 | 0 |
| Service brakes | 1 | 0 | 0 |
| Suspension | 1 | 0 | 0 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
The contact stated that the vehicle was experiencing front suspension, coolant, and oil leak failures. The contact stated that the front suspension unexpectedly lowered while the vehicle was parked or while driving. The message "Active Curve System Malfunction" was displayed.
Vehicle failed oil consumption test. Vehicle has been leaking and/or losing oil for months despite the issue being alleged fixed under NHTSA recall 18V272. The issue is ongoing and Mercedes Jacksonville is claiming the oil leak is from another issue not covered under warranty or recall order.
The contact stated while driving at an undisclosed speed, the check engine warning light illuminated on the instrument panel with the "Low Hydraulic Fluid" message displayed. After a visual inspection of the engine compartment, the contact observed hydraulic fluid covering the engine.
When owners complained
NHTSA complaints by filing year. The peak shows at what age the problems show up most.
Comparison
By complaint count this model year ranks 17,152 of 36,659 model years in the NHTSA data (top 47% most complained about).
On average one model year of the AMG ML63 has 3 complaints (3 years in the data). This year has 3, about average.
What to check before buying
- Engine. Cold start, unusual noises, oil leaks and engine codes.
- Engine and cooling. Radiator and fan after a frontal hit, coolant level and condition, overheating.
- Fuel system. Fuel smell, leaks, rough running, fuel-system codes.
- Service brakes. Pedal feel, ABS operation, leaks, discs and hoses.
Other years of this model
Questions and answers
What are the most common problems with the 2014 Mercedes-Benz AMG ML63?
Owner complaints to NHTSA most often mention: engine, engine and cooling, fuel system. Total complaints: 3. The most frequent symptoms in complaint texts: oil leak or consumption (67%), warning lights, check engine (67%), battery drain (33%).
How many service bulletins (TSB) were issued for the 2014 Mercedes-Benz AMG ML63?
NHTSA lists 0 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 2014 Mercedes-Benz AMG ML63 from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 2014 models
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-06.