AI Damage2014 Mercedes-Benz ML550: common problems
Owners of the 2014 Mercedes-Benz ML550 filed 3 complaints with NHTSA, most often about electrical system and engine. Details by component below, with sources.
Key figures
- Owner complaints
- 3
What fails most often
- 1 Electrical system 33% of all complaints
- 2 Engine 33% of all complaints
- 3 Exterior lighting 33% of all complaints
- Electrical system: 1 complaints (33% of all).
- Engine: 1 complaints (33% of all).
- Exterior lighting: 1 complaints (33% of all).
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Electrical system | 1 | 0 | 0 |
| Engine | 1 | 0 | 0 |
| Exterior lighting | 1 | 0 | 0 |
| Other | 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 turn indicators stop working suddenly and randomly giving inaccurate/false indication to the driver of the vehicle that indicators are turned on and no indication of turn signal to the other drivers that can be hazardous especially at the 4 way stop signs where other drivers are assuming that vehicle is going…
Right passenger turbo failed after 50,000 miles several thousand dollars to fix
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 ML550 has 6 complaints (7 years in the data). This year has 3, below average.
What to check before buying
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Engine. Cold start, unusual noises, oil leaks and engine codes.
- Exterior lighting. Headlamps, leveling, sensors and mounts after a frontal hit.
Other years of this model
Questions and answers
What are the most common problems with the 2014 Mercedes-Benz ML550?
Owner complaints to NHTSA most often mention: electrical system, engine, exterior lighting. Total complaints: 3.
How many service bulletins (TSB) were issued for the 2014 Mercedes-Benz ML550?
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 ML550 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.