YearToAvoid

2014 Mercedes-Benz ML350 Engine Problems

NHTSA lists 20 engine-related complaints for the 2014 Mercedes-Benz ML350, 29% of all 68 complaints filed for the year. Median mileage at failure is 22,000 miles, with 2 crashes and 1 injury reported. No related recalls are listed for this engine issue.

Engine complaints
20
29% of 68
Crashes reported
2
Fires reported
0
Injuries reported
1
Median mileage
22,000 mi
Related recalls
0

Typical engine symptoms owners report

  • Engine stalls suddenly while driving at moderate speed, sometimes restarting on its own after the vehicle is towed for module pin replacement.
  • Owners describe an unusual noise from the engine that dealers dismissed as normal before later acknowledging a problem.
  • Check engine and 'a-service' lights illuminate, prompting oil changes and fluid top-offs that do not resolve the recurring warning.
  • Engine shuts off completely while driving, including during turns and inclines, sometimes locking the steering wheel and requiring the vehicle to be held on the brake.
  • Intermittent burning smell noted from under the hood after driving, reported alongside an unrelated Takata airbag recall.
  • Engine warning lights lead to costly software upgrades or, in later cases, a full wiring harness replacement.

When 2014 Mercedes-Benz ML350 engine complaints were filed

First complaint Dec 10, 2014, latest Jun 30, 2025.

2014 Mercedes-Benz ML350 engine complaints: complaints filed per month2Dec 2014Feb 2017Feb 2018May 2022Dec 2022Oct 2023
20 complaints filed with NHTSA from Dec 2014 to Jun 2025; peak Mar 2015 (2).

Engine recalls for the 2014 Mercedes-Benz ML350

No safety recalls on record for this model year.

Engine complaints by ML350 model year

Raw complaint counts per model year; newer years have had less time to accumulate complaints.

  1. 20105 (5%)
  2. 201110 (9%)
  3. 201224 (37%)
  4. 201317 (30%)
  5. 201420 (29%)
  6. 201513 (25%)

Frequently asked questions

How common are engine complaints for the 2014 Mercedes-Benz ML350?
NHTSA lists 20 engine-related complaints for the 2014 ML350, which is 29% of the 68 total complaints filed for that model year.
At what mileage do 2014 ML350 engine problems typically show up?
The median mileage at failure for engine-related complaints is 22,000 miles.
Is there a recall for the 2014 ML350 engine problems?
No related recalls are listed in NHTSA data for this engine complaint area.
Did the 2014 ML350 engine issues cause any crashes or injuries?
NHTSA data shows 2 crashes and 1 injury associated with this complaint area.
How does 2014 compare to other ML350 model years for engine complaints?
The 2014 ML350 engine share is 29%, lower than 2012 at 37% and 2013 at 30%, but higher than 2015 at 25%.

Sources: NHTSA Office of Defects Investigation complaint and recall databases; U.S. EPA fuel economy data; NHTSA 5-Star Safety Ratings. Complaints are unverified owner reports.

Data updated Sep 24, 2026. Read the methodology and data sources. The Complaint Index is based on NHTSA owner complaints and recalls; it is not a reliability rating.