Showing the 2014 ML-Class ML63 AMG: EPA's ML63 AMG (5.5 L, 4WD). NHTSA's overall rating for that drive: 5 stars (4WD). Recalls and complaints cover the whole model year. Every version
Owner complaints, recalls, fuel economy and safety ratings from public NHTSA and EPA data, updated Oct 18, 2026.
Fuel economy
15 mpgcombined; city 13, highway 17; the ML63 AMG
Five years of fuel
$26,830U.S. average; Ohio $25,280 at local prices; the ML63 AMG; fuel only, not other costs of owning it; 15,000 miles a year, at EIA fuel prices for the week of Oct 12, 2026
NHTSA's VIN data lists these trims for the 2014 ML-Class. A trim's engine and numbers are shown as its own only where EPA names versions after the trim and no other version could be it; "seen with" means a source shows that engine on the trim, not that it was the only one. Recalls and complaints cover the whole model year: whether a recall applies to a car depends on its VIN, on NHTSA's recall lookup.
Owners have filed 74 complaints with NHTSA about the 2014 ML-Class. These are unverified owner reports, counted by the part of the car they name; one complaint can name several parts. Counts aren't adjusted for how many were sold, so they don't show how reliable a car is.
Complaints by part of the car
Part
Complaints
Crashes
Fires
Injuries
Electrical system
21
0
0
0
Engine
19
0
0
0
Unknown or other
18
3
2
1
Fuel/propulsion system
7
0
0
0
Fuel system, diesel
5
0
0
0
Fuel system, gasoline
5
0
0
0
Lane departure
5
0
0
0
Structure
5
2
0
1
Air bags
4
1
0
1
Power train
4
0
0
0
Steering
4
1
0
0
Exterior lighting
3
0
0
0
11 more parts
Vehicle speed control
3
2
0
1
Engine and engine cooling
2
0
0
0
Visibility
2
0
0
0
Wheels
2
2
0
0
Electronic stability control (ESC)
1
0
0
0
Seats
1
0
0
1
Service brakes
1
0
0
0
Service brakes, hydraulic
1
0
0
0
Suspension
1
0
0
0
Tires
1
1
0
0
Visibility/wiper
1
0
0
0
What the columns count
Complaints: complaints that name that part. One complaint can name several parts, so the rows overlap and don't add up to the total.
Crashes and Fires: complaints that report one. Two owners can file about the same event, and NHTSA doesn't link them, so these count reports, not events.
Injuries: the number of people the complaints say were injured.
None of these columns shows that a part caused a crash, fire or injury: they're what owners reported, unverified.
Complaints by model year
Newer years have had less time to collect complaints, and counts aren't adjusted for sales, so a shorter bar doesn't mean a more reliable year.
NHTSA lists 4 recall campaigns for the 2014 ML-Class over its history. Campaigns are matched by model and year, so each one may apply to a given car, and its repair may already be done: check a VIN on NHTSA's recall lookup for the open recalls on that exact car.
NHTSA campaign 22V955000 · reported Dec 23, 2022 · 348,183 vehicles potentially affected across the whole campaign
Remedy: 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.
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.
Risk: An engine stall while driving increases the risk of a crash.
NHTSA campaign 19V787000 · reported Nov 1, 2019 · 24,226 vehicles potentially affected across the whole campaign
Remedy: 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.
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
Risk: An inaccurate vehicle location may delay emergency responders, increasing the risk of injury.
NHTSA campaign 18V272000 · reported Apr 27, 2018 · 9,725 vehicles potentially affected across the whole campaign
Remedy: 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.
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.
Risk: The leaking oil in the presence of an ignition source can increase the risk of a fire.
NHTSA campaign 17V177000 · reported Mar 14, 2017 · 51 vehicles potentially affected across the whole campaign
Remedy: 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.
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.
Risk: 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.
Carmakers sent NHTSA 137 service bulletins and notices that cover the 2014 ML-Class, the latest on Sep 22, 2026. They tell dealers how to fix known issues.
The parts they mention most: electrical system (30), equipment (19), engine (15), engine and engine cooling (15), exterior lighting (14).
NHTSA hasn't opened a defect investigation that covers this model year.
Maintenance
Oil
The owner's manual gives the oil and how often to change it. We show oil facts only once we've checked them against the manual, and we haven't yet for the 2014 ML-Class.
EPA class: standard sport utility vehicle. EPA greenhouse gas score: 2–5 out of 10. Each version EPA tested:
Swipe the table sideways for more columns.
Version
Engine
Transmission
Fuel
City / hwy / comb
ML350 Rear-Wheel Drive
3.5 L, 6 cyl
Automatic 7-spd
Premium Gasoline
18 / 23 / 20
ML350 4matic 4-Wheel Drive
3.5 L, 6 cyl
Automatic 7-spd
Premium Gasoline or E85
18 / 22 / 19
ML350 4matic 4-Wheel Drive
3.5 L, 6 cyl
Automatic 7-spd
Premium Gasoline
18 / 22 / 19
ML550 4matic 4-Wheel Drive
4.7 L, 8 cyl, turbo
Automatic 7-spd
Premium Gasoline
14 / 19 / 16
ML63 AMG 4-Wheel Drive
5.5 L, 8 cyl, turbo
Automatic 7-spd
Premium Gasoline
13 / 17 / 15
Sources and dates
U.S. EPA fuel economy data, file of Sep 29, 2026
NHTSA owner complaints, file of Oct 18, 2026
NHTSA recalls, file of Oct 18, 2026
NHTSA manufacturer communications, file of Oct 18, 2026
NHTSA defect investigations, file of Oct 18, 2026
NHTSA 5-Star Safety Ratings, file of Aug 7, 2026
U.S. Energy Information Administration, file of Oct 12, 2026
Fuel cost: EPA mpg with fuel prices for the week of Oct 12, 2026 and electricity prices for Jul 2026. Source: U.S. Energy Information Administration (Oct 2026). Complaints are unverified reports owners filed with NHTSA. About the data