Is the 2014 Mercedes-Benz ML350 reliable?

The 2014 Mercedes-Benz ML350 has 107 complaints filed with NHTSA (1.0x the segment average). Our reliability verdict: average. Most common issue: ELECTRICAL problems.

What are common problems with the 2014 Mercedes-Benz ML350?

Top problems: ELECTRICAL (20 complaints, avg repair $500); ENGINE (17 complaints, avg repair $500); OTHER (17 complaints, avg repair $500). Issues typically appear around 50K miles.

Are there any recalls on the 2014 Mercedes-Benz ML350?

No recalls have been issued for the 2014 Mercedes-Benz ML350.

How much does it cost to fuel a 2014 Mercedes-Benz ML350?

The 2014 Mercedes-Benz ML350 gets 20 MPG combined. At current US average gas prices, driving 12,000 miles per year costs roughly $2400. See the interactive fuel cost calculator on this page for state-specific pricing.

How much does it cost to insure a 2014 Mercedes-Benz ML350?

Estimated US average full-coverage insurance for the 2014 Mercedes-Benz ML350 is approximately $2,079/year (suv-luxury class). Actual quotes vary heavily by state, driver age, driving record, and credit — see the interactive insurance estimator on this page for state-specific pricing.

2014 Mercedes-Benz ML350

Problems, Recalls & Reliability Report

Average

Quick Summary

The 2014 Mercedes-Benz ML350 has 107 owner complaints filed with NHTSA — that's 1.0x the segment average of 107. The most common issue is electrical problems (19% of all complaints), specifically: 2014 mercedes-benz ml 350 check engine light illuminated and rough running. *mw the consumer stated the door would stick, the electronics module and duel door central lock were replaced. *jb. ⚠️ 2 fire reports filed.

2 fire reports 6 crash reports 3 injuries

107

Total Complaints

Recalls Issued

—/5

Safety Stars

1.0x

vs Segment Avg

Known Problems(top 5 of 8)

ELECTRICAL

20 complaints

19%

• 2014 MERCEDES-BENZ ML 350 CHECK ENGINE LIGHT ILLUMINATED AND ROUGH RUNNING. *MW THE CONSUMER STATED THE DOOR WOULD STICK, THE ELECTRONICS MODULE AND DUEL DOOR CENTRAL LOCK WERE REPLACED. *JB
• VEHICLE MADE A RIGHT-HAND TURN UPHILL AND COMPLETELY SHUT OFF FOR 25 MINUTES; ENGINE AND ELECTRICAL COMPONENTS. REQUIRED TO MANUALLY HOLD IN THE BRAKE ON AN INCLINE UNTIL VEHICLE RESTARTED. DEALERSHIP CANNOT REPLICATE THE ISSUE AND IS RETURNING THE VEHICLE.
• APRIL 12TH 20018 I GOT IN MY BENZ AND STARTED IT AND ALL THE LIGHTS ON THE INSTRUMENT CLUSTER LIGHT UP AND SHOULD GO OF AFTER A FEW SECONDS BUT THE LIGHTS DID NOT GO OF SO I PUT THE CAR IN DRIVE AND THE EMERGENCY BRAKE WILL NOT RELEASE SO I HAD TO PUSH REALLY HARD ON THE BRAKE TO STOP THE CAR I TURN

Typical onset: 50K miles Est. repair: $500

“2014 MERCEDES-BENZ ML 350 CHECK ENGINE LIGHT ILLUMINATED AND ROUGH RUNNING. *MW THE CONSUMER STATED THE DOOR WOULD STICK, THE ELECTRONICS MODULE AND DUEL DOOR CENTRAL LOCK WERE REPLACED. *JB”

— NHTSA complaint filing

When Problems Appear on the 2014 Mercedes-Benz ML350

Based on 45 owner complaints that included an odometer reading. Median mileage at time of complaint: 42K miles. Most complaints cluster in the 0-30K miles range.

Overall complaint distribution by mileage

0-30K

30-60K

60-100K

100-150K

150-200K

200K+

OTHER

In line with typicalmedian 25K mi · 10 reports

0-30K

30-60K

60-100K

100-150K

150-200K

200K+

FUEL SYSTEM

High-mileage issuemedian 88K mi · 8 reports

0-30K

30-60K

60-100K

100-150K

150-200K

200K+

Mileage figures are self-reported by owners in NHTSA complaint filings. Peak bucket = the mileage range with the most complaints for that component; it reflects when owners noticed and reported problems, not necessarily when the fault first occurred.

Fuel Cost Calculator for 2014 Mercedes-Benz ML350

Live EIA prices

Annual miles driven: 12,000

Your state (affects local gasoline price)

Per year

$2,401

Per month

$200

Per mile

20.0¢

MPG

City driving (worst-case MPG)

$2,667/yr

Highway driving (best-case MPG)

$2,087/yr

Based on EPA fuel-economy ratings and EIA weekly retail prices (2026-07-20). Real-world cost varies with driving style, trim/engine, terrain, and traffic.

5-Year Gas Price History

EIA weekly retail data · 2021 → today

Show:

Current

$4.00

5-year low

$2.78

5-year high

$5.01

Since 2021

+27%

Source: US Energy Information Administration weekly retail gasoline prices.

Estimated Insurance Cost for 2014 Mercedes-Benz ML350

Estimate only, not a quote. Modeled from NAIC + HLDI averages for a hypothetical 35-year-old driver with clean record + full coverage. Your actual quote depends heavily on your age, driving history, credit, ZIP code, and insurer.

Your state (affects local premium average)

Full coverage / year

$2,079

Full coverage / month

$173

Liability only / year

$732

vs US avg

+24%

How this estimate is calculated

US base full-coverage premium$1674

× state (US)1.00x

× vehicle class (suv-luxury)1.35x

× theft risk1.00x

× safety rating1.00x

× vehicle age0.92x

= Full coverage estimate$2079

Coverage assumed: 100/300/100 liability + comprehensive/collision, $500 deductibles. Data sources: NAIC 2024 + HLDI loss studies.

Maintenance & Warranty

Recommended Mercedes-Benz ML350 Service Intervals

Oil change

10K mi / 12 mo

Tire rotation

10K mi

Brake fluid

24 months

Transmission fluid

40K mi

Engine coolant

150K mi

Spark plugs

60K mi

Cabin air filter

20K mi

Engine air filter

40K mi

Differential (AWD/4WD)

40K mi

Service A / Service B alternating schedule. Requires MB-approved oil (229.5 spec typically).

"Severe service" conditions (heavy towing, extreme temps, city stop-and-go) typically halve these intervals. Always consult your vehicle's owner's manual for the authoritative schedule.

Mercedes-Benz New-Vehicle Warranty Coverage

Bumper-to-bumper (basic)

4 yr / 50K mi

Powertrain

4 yr / 50K mi

Hybrid/EV battery

10 yr / 155K mi

Corrosion (rust perforation)

4 yr / 50K mi

Roadside assistance

4 yr / unlimited mi

EQ EV battery warranty is 10 years/155,000 miles

These are the terms for a new Mercedes-Benz. If you're buying a used 2014 ML350, remaining coverage is usually pro-rated from the vehicle's original in-service date. Not all coverage transfers between owners — check with a Mercedes-Benz dealer for VIN-specific remaining warranty.

Estimated Repair Costs

ELECTRICAL(~50K mi)

$500

ENGINE(~50K mi)

$500

OTHER(~50K mi)

$500

FUEL SYSTEM(~50K mi)

$500

DRIVER ASSIST/CAMERAS(~50K mi)

$500

Estimates based on average reported repair costs. Actual costs vary by location, shop, and severity.

🔍 Pre-Purchase Inspection Checklist

Based on 107 owner complaints for this specific year, here's what to check or ask about:

☐
ELECTRICAL: 2014 MERCEDES-BENZ ML 350 CHECK ENGINE LIGHT ILLUMINATED AND ROUGH RUNNING. *MW THE CONSUMER STATED THE DOOR WOULD STICK, THE ELECTRONICS MODULE AND DUEL DOOR CENTRAL LOCK WERE REPLACED. *JB
Typically appears around 50K miles. Repair cost ~$500
☐
ENGINE: TL* THE CONTACT OWNS A 2014 MERCEDES BENZ ML350. WHILE DRIVING 40 MPH, THE ENGINE STALLED. THE CONTACT WAS ABLE TO RESTART THE VEHICLE. THE VEHICLE WAS TOWED TO A DEALER WHO STATED THAT THE ENGINE MODULE PINS WERE DEFECTIVE AND NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS NO
Typically appears around 50K miles. Repair cost ~$500
☐
OTHER: HIT IN THE HEAD IN APRIL 2015 BY SUV REAR POWER LIFT GATE CAUSING TRAUMATIC BRAIN INJURY. DESIGN FLAW IN MOST SUV REAR LIFT GATE. I BELIEVE CHRYSLER HAS ONE THAT BEEPS WHEN LIFT GATE IS LOWERING BUT OTHERS DO NOT. ALSO THEY SHOULD BE DESIGNED LIKE GARAGE DOORS IN THAT A SENSOR CAN STOP PROGRESSION O
Typically appears around 50K miles. Repair cost ~$500
☐
FUEL SYSTEM: 2014 MERCEDES-BENZ ML 350 CHECK ENGINE LIGHT ILLUMINATED AND ROUGH RUNNING. *MW THE CONSUMER STATED THE DOOR WOULD STICK, THE ELECTRONICS MODULE AND DUEL DOOR CENTRAL LOCK WERE REPLACED. *JB
Typically appears around 50K miles. Repair cost ~$500
☐
General: Get a pre-purchase inspection from an independent mechanic ($100-$200)