2014 Mercedes-Benz ML-Class reliability
The 2014 Mercedes-Benz ML-Class has 74 complaints with NHTSA after 13 years, or 3 per year. That is the fewest complaints per year among the 4 ML-Class years on this site. NHTSA has no recalls on file for this model year.
74
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0
13
The complaints owners file most often name Electrical system (21 of 74), then Engine (19) and Fuel and propulsion system (7). Those filings include 7 that report a crash, 2 that report a fire, and 3 that report an injury.
The 2013 ML-Class has 62 complaints, 4 per year, and the 2015 has 66 complaints, 7 per year. The 2014 has about the same number of complaints per year as the 2013. The 2014 has fewer complaints per year than the 2015.
The complaint rate is complaints filed in this year’s first 3 years on the road, divided by however many of those years have passed. Recalls are a separate count. The numbers are for the US-market 2014 Mercedes-Benz ML-Class. How we count. Data as of .
Recalls (0)
No recalls on file with NHTSA for this model year.
Complaints by component (74 total)
Show 14 more Show less
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Complaints filed per year
Excerpts from recent NHTSA complaint filings
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"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."
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"The contact owns a 2014 MERCEDES-BENZ E350. 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…"
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"The contact owns a 2014 Mercedes-Benz ML350. The contact stated that while driving at 35 MPH and accelerating above 40 MPH, the vehicle failed to accelerate above 40 MPH before it lost automotive power. The vehicle was…"
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"The contact owns a 2014 Mercedes-Benz ML63 AMG. The contact stated that the vehicle was experiencing front suspension, coolant, and oil leak failures. The contact stated that the front suspension unexpectedly lowered…"
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"Today at 1/27/25 630 pm my vehicle caught fire.i was told that the vehicle was subject to the Active Curve System (Recall 18V272) and Fuel Pump (Recall 23V010)."
NHTSA crash ratings
| Version | Overall | Front | Side | Rollover |
|---|---|---|---|---|
| 2014 Mercedes-Benz ML-Class SUV 4WD | 5 stars | 5 stars | 5 stars | 4 stars |
| 2014 Mercedes-Benz ML-Class SUV RWD | 5 stars | 5 stars | 5 stars | 4 stars |
Stars are how this vehicle did in NHTSA crash tests. They are a safety result, separate from the complaint record. Not rated means that test was not run for this version.
Specs and fitment
Known issues for this generation
NHTSA complaints on 2012-2015 Mercedes-Benz ML-Class (W166) vehicles most often name the engine, followed by fuel/propulsion and powertrain. Confirm open recalls by VIN using the specific ML trim string (for example ML350); some Mercedes campaigns are filed under trim-level model names rather than ML-Class.
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Frequently asked questions
Is the 2014 Mercedes-Benz ML-Class reliable?
The 2014 Mercedes-Benz ML-Class has 74 complaints with NHTSA after 13 years, or 3 per year. That is the fewest complaints per year among the 4 ML-Class years on this site. NHTSA has no recalls on file for this model year.
What are common problems with a 2014 Mercedes-Benz ML-Class?
The complaints owners file most often name Electrical system (21 of 74), then Engine (19) and Fuel and propulsion system (7). Those filings include 7 that report a crash, 2 that report a fire, and 3 that report an injury.
Is the 2014 Mercedes-Benz ML-Class more reliable than the years next to it?
The 2013 ML-Class has 62 complaints, 4 per year, and the 2015 has 66 complaints, 7 per year. The 2014 has about the same number of complaints per year as the 2013. The 2014 has fewer complaints per year than the 2015.
Has the 2014 Mercedes-Benz ML-Class been recalled?
NHTSA has no recalls on file for the 2014 Mercedes-Benz ML-Class.
How many complaints have owners filed about the 2014 Mercedes-Benz ML-Class?
Owners have filed 74 complaints about the 2014 Mercedes-Benz ML-Class with NHTSA.
What engine oil does a Mercedes-Benz ML-Class use?
MB-Approval oils such as 0W-40 or 5W-40 are commonly listed for this W166 generation; capacity is about 8.5 qt with filter on typical gasoline fills.
What tire sizes does an ML350 commonly use?
Common OEM packages include 255/50R19 and 265/45R20; confirm the door placard for your wheel option.
What do NHTSA complaints most often name on 2012-2015 ML-Class vehicles?
NHTSA complaints on 2012-2015 ML-Class (W166) vehicles most often name the engine, followed by fuel/propulsion and powertrain; confirm open recalls by VIN.