AI Damage2014 Mercedes-Benz ML350: common problems
Owners of the 2014 Mercedes-Benz ML350 filed 68 complaints with NHTSA, most often about electrical system and engine. Details by component below, with sources.
Key figures
- Owner complaints
- 68
- involving a crash
- 7
What fails most often
- 1 Electrical system 29% of all complaints
- 2 Engine 24% of all complaints
- 3 Fuel/propulsion system 10% of all complaints
- 4 Fuel system 7% of all complaints
- 5 Lane departure 7% of all complaints
- 6 Structure 7% of all complaints
- 7 Air bags 6% of all complaints
- 8 Powertrain 6% of all complaints
- Electrical system: 20 complaints (29% of all).
- Engine: 16 complaints (24% of all).
- Fuel/propulsion system: 7 complaints (10% of all).
- Fuel system: 5 complaints (7% of all).
- Lane departure: 5 complaints (7% of all).
Symptoms owners describe
How many of the 68 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) |
|---|---|---|---|
| Electrical system | 20 | 0 | 0 |
| Engine | 16 | 0 | 0 |
| Fuel/propulsion system | 7 | 0 | 0 |
| Fuel system | 5 | 0 | 0 |
| Lane departure | 5 | 0 | 0 |
| Structure | 5 | 2 | 0 |
| Air bags | 4 | 1 | 0 |
| Powertrain | 4 | 0 | 0 |
| Steering | 4 | 1 | 0 |
| Vehicle speed control | 3 | 2 | 0 |
| Visibility | 3 | 0 | 0 |
| Exterior lighting | 2 | 0 | 0 |
| Wheels | 2 | 2 | 0 |
| Electronic stability control | 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.
Within two months of this purchase, I experienced two flat tires in which both times I had to pay $87 and some change. Addtionally, within a year, two of the tires became bald, indicating premature wear.
[XXX] obtained his vehicle from Saint [dealer] dealership. The dealership performed recall services, checked tires and brakes. Vehicle was inspected by dealership and released to owner. Owner drove vehicle approximately 20 minutes and tire flew off vehicle onto roadway, resulting in accident.
The car all of a sudden accelerated at a high rate of speed. I was going too fast to make the right turn and the brakes did not stop the car. I ended up running through the stop sign up an incline and into the woods hitting multiple trees before coming to a stop.
I own a mercedes benz ml 350 2014 and never had any problems with it untill this pass friday march 31st I was driving to work that morning I same way I always go and while going around the small roundabout the suv shot of and started pulling to the left and it sounde like a piece of iron being draged on concrete.it…
I was in a collision in which I rear ended another suv. The speed control did not enable and I hit the other vehicle hard enough to cause $20,000 worth of damage to my car. I believe the car braking response was slow and the airbag should have deployed in a crash that significant, but it did not.
Turn signals stop functioning during drive cycles. This functionality is lost for the remainder of the current drive cycle and can be restored with a key cycle. It does not occur every drive cycles and is unpredictable.
The contact stated while driving 60 MPH on the freeway, there was a popping noise coming from the sunroof and discovered it was shattered. The vehicle was not taken to the dealer or an independent mechanic for diganoses .The vehicle was not repaired The manufacturer was not notified of the failure.
It seems that this vehicle was not included in a brake booster recall which included this model from 2005 through 2015. The brakes are not working properly, and brake fluid has entered the master brake cylinder damaging the seal. It is extremely unsafe to operate this vehicle in this condition.
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 4,491 of 36,656 model years in the NHTSA data (top 12% most complained about).
On average one model year of the ML350 has 68 complaints (14 years in the data). This year has 68, about 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.
- Fuel/propulsion system. Fuel smell, leaks, rough running, fuel-system codes.
- Fuel system. Fuel smell, leaks, rough running, fuel-system codes.
Other years of this model
Questions and answers
What are the most common problems with the 2014 Mercedes-Benz ML350?
Owner complaints to NHTSA most often mention: electrical system, engine, fuel/propulsion system. Total complaints: 68. The most frequent symptoms in complaint texts: warning lights, check engine (21%), fuel system, fuel smell (15%), stalls while driving (12%).
How many service bulletins (TSB) were issued for the 2014 Mercedes-Benz ML350?
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 ML350 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 2026-11-05.