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    Mercedes-Benz M-Class

    EPA MPG: 19 mpg

    RECALL ALERT:
    There are 4 recalls on this vehicle. Learn More.

    Reliability

    Overall Reliability

    The 2014 M-Class has about average reliability compared to other cars from the same model year.

    The 2014 Mercedes-Benz M-Class has been recalled 4 times by NHTSA. View Recalls
    Most Common Trouble Spots
    Common Trouble Spot
    Common Trouble Spot

    Owner Reported Trouble Spots

    The Reliability score is based on our latest subscriber survey of 2014 Mercedes-Benz M-Class owners. The owner comments describe problems respondents experienced with this vehicle.

    Engine Minor

    Accessory belts and pulleys, engine computer, engine mounts, engine knock or ping, fuel leaks, oil leaks.

    What Owners Say

    Accessory belts or pulleys

    "A pulley seized and shredded the accessory belt."

    Anonymous, WI (2014 Mercedes-Benz M-Class ML350 BlueTec 3.0-L V6 diesel)
    Oil leaks

    "Oil cooler cracked and failed"

    Anonymous, CA (2014 Mercedes-Benz M-Class ML350 BlueTec 3.0-L V6 diesel)

    "Constantly replacing seals to stop engine leaks"

    Anonymous, WI (2014 Mercedes-Benz M-Class ML350 BlueTec 3.0-L V6 diesel)

    ""Slow oil leak after 100,000 miles. A gasket needed to be replaced, but taking apart the engine to get to it revealed nearly blocked manifold exhaust. This is a diesel engine. It's turbocharged. It's a six cylinder. And these are no longer installed on the MERCEDES-BENZ SUVs.""

    Anonymous, OH (2014 Mercedes-Benz M-Class ML350 BlueTec 3.0-L V6 diesel)

    Exhaust

    Muffler, pipes, catalytic converter, exhaust manifold, heat shields, leaks.

    What Owners Say

    Other/unsure

    ""engine mounts leaking, headgasket leak, rear crankshaft seal leaking""

    Anonymous, CA (2014 Mercedes-Benz M-Class ML350 3.5-L V6)

    Engine Electrical

    Alternator, starter, hybrid battery replacement, hybrid battery related systems, regular battery, battery cables, engine harness, coil, ignition switch, electronic ignition, spark plugs and wires failure, auto stop/start.

    What Owners Say

    Spark plugs or wires failure

    "Ignition coil replacement"

    Anonymous, MN (2014 Mercedes-Benz M-Class ML350 3.5-L V6)

    Engine Major

    Engine rebuild or replacement, cylinder head, head gasket, turbocharger or supercharger, timing chain or belt.

    What Owners Say

    Other major engine problem

    "Manifold exhaust on engine ducts were nearly totally blocked. This is a diesel engine."

    Anonymous, OH (2014 Mercedes-Benz M-Class ML350 BlueTec 3.0-L V6 diesel)

    Drive System

    Driveshaft or axle, CV joint, differential, transfer case, four-wheel-drive/all-wheel-drive components, driveline vibration, electrical failure, traction control, electronic stability control.

    Electrical Accessories

    Cruise control, clock, warning lights, body control module, keyless entry, wiper motor or washer, tire pressure monitor, interior or exterior lights, horn, gauges, 12V power plug, USB ports, alarm or security system, remote engine start, heated or cooled seats, heated steering wheel, headlights, automatic headlights, automatic wipers, wireless charging pad.

    Engine Cooling

    Radiator, cooling fan, water pump, thermostat, antifreeze leaks, overheating.

    Suspension/Steering

    Shocks or struts, ball joints, tie rods, wheel bearings, alignment, steering linkage (includes rack and pinion), power steering (pumps and hoses, leaks), wheel balance, springs or torsion bars, bushings, electronic or air suspension.

    Brakes

    Premature pad/rotor wear, pulsation or vibration, antilock system, parking brake, master cylinder, calipers, squeaking, brake failure, regenerative braking.

    In-car Electronics

    Infotainment system (audio, GPS, phone), rear entertainment system, backup or other camera/sensors, head-up display.

    Transmission Major

    Transmission rebuild or replacement, torque converter, premature clutch replacement.

    Body Hardware

    Windows, locks and latches, doors or sliding doors, tailgate, trunk or hatch, mirrors, seat controls (power or manual), seat belts, sunroof, convertible top, glass defect.

    Climate System

    AC compressor, blower (fan) motor, condenser, evaporator, heater system, automatic climate system, electrical failure, refrigerant leakage.

    Transmission Minor

    Gear selector and linkage, transmission computer, transmission sensor or solenoid, clutch adjustment, rough shifting, slipping transmission, leaks.

    Noises/Leaks

    Squeaks, rattles, wind noises, seals and/or weather stripping, air and water leaks.

    Paint/Trim

    Paint (fading, chalking, peeling, or cracking), loose interior or exterior trim or moldings, rust.

    Fuel System/Emissions

    Sensors (O₂, or oxygen, sensor), emission-control devices (includes EGR), fuel-injection system, fuel gauge/sender, fuel pump, problems filling up the tank.

    2014 SUVs Reliability

    This Car
    vs. Similar Cars

    Mercedes-Benz vs. Other New Car Brands Reliability

    Reliability History
    * Redesign year
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    Overall Reliability Verdict
    NA
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    POTENTIAL TROUBLE SPOTS
    Powertrain
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    Engine Major
    NA
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    Engine Minor
    NA
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    Engine Cooling
    NA
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    Engine Electrical
    NA
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    Transmission Major
    NA
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    Transmission Minor
    NA
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    Drive System
    NA
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    Fuel System/Emissions
    NA
    NA
    NA
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    NA
    NA
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    Exhaust
    NA
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    Suspension/Steering
    NA
    NA
    NA
    NA
    NA
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    NA
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    NA
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    NA
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    Brakes
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    Climate System
    NA
    NA
    NA
    NA
    NA
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    NA
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    NA
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    NA
    Build Quality
    NA
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    Electrical Accessories
    NA
    NA
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    NA
    NA
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    NA
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    NA
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    NA
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    Body Hardware
    NA
    NA
    NA
    NA
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    NA
    NA
    NA
    NA
    NA
    NA
    Paint/Trim
    NA
    NA
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    NA
    NA
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    NA
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    NA
    NA
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    NA
    Noises/Leaks
    NA
    NA
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    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    In-car Electronics
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    NA
    Reliability indicates how models have performed in the past, providing the basis for predicting how the vehicles will hold up in the year ahead. These charts provide the most comprehensive reliability information available to consumers. Based on information received from our latest subscriber survey for about 380,000 vehicles, our reliability history charts give you a rundown on how 2000 through 2025 vehicles are holding up in 20 potential trouble spots, ranging from the engine, transmission, electric motor, EV charging, and brakes, to power equipment and the electrical accessories.
    Recalls
    PROVIDED BY
    FUEL SYSTEM, DIESEL, FUEL SYSTEM, GASOLINE
    Dec 23, 2022
    An engine stall while driving increases the risk of a crash.
    Summary:
    Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2012-2014 ML550, 2012-2015 ML350, AMG ML63, 2015 ML250, ML400, 2016 GLE450, GLE300, 2016-2018 GLE350, GLE550, 2016-2019 GLE400, 2017-2019 AMG GLE43, and 2016-2020 AMG GLE63 vehicles. Water might accumulate in the spare tire wheel well and damage the fuel pump control unit, which could cause an engine stall while driving.
    What should you do:
    Dealers will install a water drain plug, inspect for water intrusion, and replace the fuel pump control unit as necessary, free of charge. Owner notification letters were mailed February 15, 2023. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's numbers for this recall are 2023010002 and 2023010003.
    For more information:
    Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.
    NHTSA CAMPAIGN ID Number: 22V955000
    Potential Number of Units Affected: 348183
    COMMUNICATION
    Nov 01, 2019
    An inaccurate vehicle location may delay emergency responders, increasing the risk of injury.
    Summary:
    Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2013-2017 vehicles due to a software fault that may cause the date and time for the emergency call system (eCall) to differ from the actual date and time, potentially relaying an inaccurate vehicle location. For a full list of the affected models visit: https://static.nhtsa.gov/odi/rcl/2019/RMISC-19V787-4620.pdf
    What should you do:
    MBUSA has initiated an Over the Air (OTA) remote update. MBUSA will also notify owners, and dealers will check software for a successful OTA or update the communication module software as needed, free of charge. The recall began December 23, 2019. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2019120008.
    For more information:
    Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.
    NHTSA CAMPAIGN ID Number: 19V787000
    Potential Number of Units Affected: 24226
    SUSPENSION
    Apr 27, 2018
    The leaking oil in the presence of an ignition source can increase the risk of a fire.
    Summary:
    Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2012-2014 ML350 Bluetec 4Matic and ML550 4Matic, 2012-2015 ML63 AMG 4Matic and ML350 4Matic, 2013-2016 GL350 Bluetec 4Matic, GL550 4Matic and GL63 AMG 4Matic, 2017 GLS350d 4Matic, GLS450 4Matic, GLS550 4Matic and GLS63 AMG 4Matic, 2015 ML400 4Matic, 2016 GLE400 4Matic, GLE350 4Matic, GLE63 AMG 4Matic, GLE63S AMG 4Matic, GLE450 4Matic Coupe and GLE63S AMG 4Matic Coupe, 2015-2016 GL450 4Matic and 2013-2014 GL450 4Matic vehicles equipped with the Active Curve System (ACS). In certain driving conditions, if the oil level in the ACS reservoir is below the minimum level, the oil may foam and leak out of the vent holes in the reservoir cap.
    What should you do:
    MBUSA will notify owners, and dealers will correct the oil level as necessary and replace the reservoir sealing cap to prevent oil foam from leaking out, free of charge. The recall began August 30, 2018. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2018070015.
    For more information:
    Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.
    NHTSA CAMPAIGN ID Number: 18V272000
    Potential Number of Units Affected: 9725
    AIR BAGS, ELECTRICAL SYSTEM
    Mar 14, 2017
    If the air bags do not deploy as intended in the event of a crash, there would be an increased risk of injury in the event of a crash.
    Summary:
    Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2016 AMG GT-S, GLC300, CLA250 and GLE300d 4Matic vehicles, 2013 C250, E350 BlueTec and G63 AMG vehicles, 2008-2014 C300 vehicles, 2013-2014 C300 4Matic and ML350 4Matic vehicles, 2009 C350 vehicles, 2014 CLS550, E350 4Matic, E350 Coupe 4Matic, E350 Wagon 4Matic, GLK350 and SL550 vehicles, 2012 CLS550 4Matic vehicles, 2012-2016 E350 vehicles, 2016-2017 GL450 4Matic vehicles, 2012-2014 ML350 4Matic BlueTec vehicles, 2015 S550, S550 4Matic and C300 4Matic Sedan vehicles, 2015-2016 C300 Sedan vehicles, and 2017 SL63 AMG vehicles. Various control units on these vehicles may have been updated with incorrect software, potentially affecting the correct deployment of the air bags in the event of a crash.
    What should you do:
    MBUSA will notify owners, and dealers will update software in the affected control units, free of charge. The recall began April 21, 2017. Owners may contact MBUSA customer service at 1-800-367-6372.
    For more information:
    Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.
    NHTSA CAMPAIGN ID Number: 17V177000
    Potential Number of Units Affected: 51
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