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2014 Mercedes-Benz GL-Class problems, recalls and owner complaints
What the 2014 Mercedes-Benz GL-Class has been recalled for, how often it fails the UK MOT and what owners report, from official government data. Updated October 25, 2026.
- 0safety recalls
- 40owner complaints
- 0crash reports
- 0fire reports
- 17%fail the UK MOT
40 complaints, against an average of 46 for the other 4 Mercedes-Benz GL-Class model years.
Every Mercedes-Benz GL-Class model year with its number of owner complaints. Pick a year to compare.
What goes wrong with the 2014 Mercedes-Benz GL-Class?
The components named most often in the 40 owner complaints. One complaint can name several, so the shares can add up to more than 100%.
What symptoms do 2014 Mercedes-Benz GL-Class owners describe?
Found by reading the text of all 40 owner complaints. Tap a symptom for the answer, a real owner quote and any related recall.
- Why is my 2014 Mercedes-Benz GL-Class burning or losing oil?4 owners · 10%
- Can the sunroof on the 2014 Mercedes-Benz GL-Class shatter or fail?4 owners · 10%
- Why is the check engine light on in my 2014 Mercedes-Benz GL-Class?3 owners · 7.5%
- Why does my 2014 Mercedes-Benz GL-Class idle rough, misfire or hesitate?3 owners · 7.5%
Has the 2014 Mercedes-Benz GL-Class been recalled?
NHTSA lists no safety recalls for the 2014 Mercedes-Benz GL-Class as of October 25, 2026. Recalls can be issued at any time, so check your VIN before you rely on this.
Is the 2014 Mercedes-Benz GL-Class recalled in the UK or Europe?
Recalls issued by the UK's DVSA and through the EU's Safety Gate system that cover this model and build period. European models can differ from U.S. ones, and "years estimated" means the recall gave no build dates, so confirm your own car with your registration or VIN.
UK DVSAOn affected vehicles the aluminium bolts of the steering gear could corrode and break due to the intrusion of moisture.
Risk: On affected vehicles the aluminium bolts of the steering gear could corrode and break due to the intrusion of moisture.
Fix: Replace the steering gear mounting bolts on the affected vehicles with steel bolts. Should the bolts break or already be broken change the steering gear.
UK DVSAOil foam may develop in the active curve system oil reservoir
Risk: It has been determined that on Model series ML/GLE GL/GLS (166) & GLE Coupe (292) with ACTIVE CURVE SYSTEM (ACS) Oil foam may develop in the systems oil reservoir under dynamic operating conditions and at an oil level below the minimum level and escape via the ventilation bores in the cap of the reservoir. Depending on the orientation of the two ventilation bores the escaping oil could spray onto hot component parts of the exhaust system. In this case risk of fire cannot be ruled out.
Fix: On affected vehicles replace the oil dipstick of the reservoir for the ACTIVE CURVE SYSTEM.
EU Safety GateThe three aluminium screws of the steering box may corrode due to exposure to spray water and aggressive road-grit (salt) used for melting…The three aluminium screws of the steering box may corrode due to exposure to spray water and aggressive road-grit (salt) used for melting ice. Advanced corrosion could weaken the screws, leading to potential breakage during manoeuvring or parking. If all fixing screws fail, the power-assisted steering could detach, resulting in a loss of power steering and an increased risk of an accident.
Measures: Type of economic operator taking notified measure(s): Manufacturer; Category of measure(s): Recall of the product from end users; Date of entry into force: Unknown
EU Safety GateThe aluminium bolts of the steering box may break.This can lead to detachment of the steering box from the power block, creating a risk of an accident.
Measures: Type of economic operator taking notified measure(s): Manufacturer; Category of measure(s): Recall of the product from end users; Date of entry into force: Unknown
EU Safety GateSevere corrosion may lead to a leakage of the brake booster, thus reducing the braking force, leading to an increase in brake pedal force…Severe corrosion may lead to a leakage of the brake booster, thus reducing the braking force, leading to an increase in brake pedal force required to decelerate the vehicle, resulting in a possible increase in stopping distance. Moreover, due to severe corrosion, a particularly strong or severe braking manoeuvre may cause mechanical damage to the brake booster, preventing the vehicle from decelerating through the service brake and thus increasing the risk of an accident.
Measures: Type of economic operator taking notified measure(s): Manufacturer; Category of measure(s): Recall of the product from end users; Date of entry into force: Unknown
EU Safety GateThe driver and passenger airbags of the company Takata in vehicles with ammonium nitrate gas generators without drying agents could, under…The driver and passenger airbags of the company Takata in vehicles with ammonium nitrate gas generators without drying agents could, under certain climate conditions, lead over time to a chemical change in the fuel.In the event of an accident triggering the release of the driver or passenger airbag, this change could cause the gas generators to burst. If a gas generator ruptures, the airbag would then have no restraining function and loose parts from the gas generator could reach the vehicle interior. This would increase the risk of injury for passengers.
Measures: Type of economic operator taking notified measure(s): Manufacturer; Category of measure(s): Recall of the product from end users; Date of entry into force: Unknown
EU Safety GateThe sealing cap of the Active Curve System's oil reservoir does not prevent oil from leaking out.Oil may leak out and spray onto hot components. As a consequence it may ignite and lead to fire.
Measures: Type of economic operator taking notified measure(s): Manufacturer; Category of measure(s): Recall of the product from end users; Date of entry into force: Unknown
EU Safety GateFollowing the update of the control unit coding, the coding parameters of the control unit could be defective.This could give rise to various unplanned reactions in the vehicle: the wrong airbag could be triggered in the event of an accident, the airbag control unit may not recognise the belt buckle status, the engine control unit could be coded with a false maximum speed or various assistance systems may not function.
Measures: Type of economic operator taking notified measure(s): Manufacturer; Category of measure(s): Recall of the product from end users; Date of entry into force: Unknown
EU Safety GateDue to incorrect functioning of the occupancy sensor system on the passenger's side, the airbag may not deploy in the event of an accident.
Measures: Type of economic operator taking notified measure(s): Manufacturer; Category of measure(s): Recall of the product from end users; Date of entry into force: Unknown
EU Safety GateThe fuel delivery module may not be fuel tight, as a result of which fuel might leak out during travel or if the vehicle is parked at an…The fuel delivery module may not be fuel tight, as a result of which fuel might leak out during travel or if the vehicle is parked at an angle, depending on how full the tank is. A risk of fire caused by an external ignition source may consequently arise.
Measures: Type of economic operator taking notified measure(s): Manufacturer; Category of measure(s): Recall of the product from end users; Date of entry into force: Unknown
How often does the 2014 Mercedes-Benz GL-Class fail its MOT?
Why they failed: the share of failed tests with at least one fault in each area (a test can fail on several). Cars first registered in 2014, tested in Great Britain in 2023; first registration is usually, but not always, the model year. Source: DVSA anonymised MOT tests and results, Open Government Licence v3.0.
What do 2014 Mercedes-Benz GL-Class owners report?
12 of the 40 complaints, the most recent for the most-reported components, as the owners wrote them. NHTSA removes names and VINs; long reports are trimmed. CarHooq has not verified individual claims.
Brake fluid leak from left front caliper crossover tube. Corrosion was found where composite insulator covers crossover tube that allowed weakening of pipe and subsequent loss of braking action. Leak was substantial enough that both channels of master cylinder were deprived of fluid, total loss of brakes, vehicle required towing.
Vehicle was parked on the driveway, brake sign came on upon start and system malfunction error showed on screen, vehicle started lowering automatically and Air compressor stopped working.
I recently purchased my Mercedes from Auto Boutique in Pearland, Texas (713) 352-0777. 1.The vehicle's air suspension system is constantly grinding, and moving/adjusting while being driven. It feels like the vehicles fame is off balance. 2. The back camera system does not work unless the radio is turned on; which is very alarming not to mention dangerous. 3. All the tires are registering improper inflation errors even though no air has been added or removed. I took the vehicle back to the place of origin; but they are not Mercedes Certified to address the issues. I am terrified to drive the…
There were numerous Engine Oil Leak Recalls by Mercedes-Benz. There was a recent recalls announced in 2023, however, my vehicle 2014 GL450 with now about 50K miles, was not included in the list. Since there have been engine oil leaks problem reported and recalls, I'd like to report my car engine oil leaks problem too. It seems that the engine oil leaks problem is a "design" issue and across many car models and years made by Mercedes-Benz. With that said, it make safety sense to have the recalls extended to those cars with engine oil leaks problem reported. Below is information from dealer…
On this Engine 166 model, I experience noise when Idling and when driving, coming from Engine with no code to indicate what is the problem of the car. This create the heat of the Engine to go up than normal and make the fan to run at high speed. When I call dealer, they told me its common problem on these Engine 166, and I need new Engine. I wanted to get second opinion from different Dealership and I got same answer, its common problems and I need new Engine or to Rebuild. I went online and I ask few people with same car Make, model and year, and the have same problems. My concern is only…
There is a recall on some of the make & models of my truck with different years but, my truck has been having the same issue & I believe that myself & my family may be at risk. The recall states that if the oil level in the ACS reservoir is below the minimum level, the oil may foam & leak out of the vent holes in the reservoir cap. The leaking of oil in the presence of ignition source can increase the risk of fire. I have been having to add two quarts of oil to my car every month for almost a year & there has been no oil in my driveway at all. The oil is going somewhere & I would like for my…
The contact owns a 2014 Mercedes-Benz GL550. The contact stated that the check engine warning light was illuminated. The vehicle was taken to the dealer, where it was diagnosed with leaky exhaust valves. The dealer determined that the exhaust valves needed to be replaced. The vehicle was taken to an independent mechanic, where a similar assessment was made. The vehicle was not repaired. The manufacturer was notified of the failure and informed the contact that the vehicle was not covered under TSB Number: 10233794. The manufacturer referred the contact to the NHTSA Hotline for assistance. The…
The contact owns a 2014 Mercedes-Benz GL550. The contact stated while driving at an undisclosed speed, the steering wheel seized, and the vehicle lost motive power. The check engine and malfunction PP0 warning lights illuminated. The contact was able to steer the vehicle to the shoulder of the roadway. The contact stated that an independent mechanic facility was nearby, so the mechanic and the contact pushed the vehicle into the shop. The vehicle was diagnosed with failed cam shaft gear and lifters. The contact was informed that the cam shaft gear and lifters needed to be replaced. The vehicle…
The contact owns a 2014 Mercedes-Benz GL350. The contact stated that while inspecting the vehicle, there was oil leaking underneath the vehicle. Additionally, the check engine warning light was illuminated while operating the vehicle. The vehicle was taken to the local mechanic who diagnosed the vehicle and determined that the oil cooler seals were faulty and needed to be replaced. The seals were replaced, and the vehicle was repaired. The vehicle was later taken to the local dealer for transmission failure. The manufacturer was notified of the failure. The failure mileage was 140,000.
Our vehicles computerized self-diagnostic system (OBD) registered faults.
After picking up children from school, I was driving out of the parking lot down a slow-speed arterial road (35 mph posted speed limit). Roughly 30 seconds after reaching the posted speed limit we heard a loud bang (like a gunshot) and immediately pulled over. The middle section of the panoramic sunroof had shattered. Upon examination on the side of the road there was no apparent impact spot or item in the roadway that would have indicated that particular section of the roof had been struck by anything (no rock, branch, brick, etc), nor were there any other vehicles in the vicinity that might…
TL* THE CONTACT OWNS A 2014 MERCEDES BENZ GL450. THE CONTACT STATED THAT THE VEHICLE BOUNCED AND PULLED TO THE LEFT AND RIGHT WHILE DRIVING WITH AN UNKNOWN WARNING LIGHT ILLUMINATED. THE VEHICLE WAS TAKEN MERCEDES-BENZ OF CORAL GABLES (300 ALMERIA AVE, CORAL GABLES, FL 33134), AND WAS DIAGNOSED THAT THE FOUR-WHEEL SUSPENSION NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED. THE CONTACT STATED THAT THE FAILURE OCCURRED TWICE. THE FIRST FAILURE WAS REPAIRED AT AN INDEPENDENT MECHANIC. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE BUT, OFFERED NO ASSISTANCE. THE FAILURE MILEAGE WAS APPROXIMATELY…
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2014 Mercedes-Benz GL-Class: questions owners ask
Is the 2014 Mercedes-Benz GL-Class reliable?
NHTSA data alone cannot rate reliability, but it shows what owners reported. Owners filed 40 complaints with NHTSA about the 2014 Mercedes-Benz GL-Class; the most common categories were engine (11, 27.5%), service brakes (5, 12.5%), electrical system (4, 10%). There are no safety recalls listed for this model year. 1 injury was reported.
What are the most common problems with the 2014 Mercedes-Benz GL-Class?
Across 40 owner complaints filed with NHTSA, the categories mentioned most often are engine (27.5% of complaints), service brakes (12.5% of complaints), electrical system (10% of complaints), power train (10% of complaints), steering (10% of complaints). One complaint can name several components.
Does the 2014 Mercedes-Benz GL-Class have any recalls?
As of October 2026, NHTSA lists no safety recalls for the 2014 Mercedes-Benz GL-Class. Recalls can be issued at any time, so check your VIN at nhtsa.gov/recalls.
Why is my 2014 Mercedes-Benz GL-Class burning or losing oil?
4 of the 40 owner complaints NHTSA has on file for the 2014 Mercedes-Benz GL-Class (10%) describe excessive oil consumption or oil leaks. One owner wrote: "There were numerous Engine Oil Leak Recalls by Mercedes-Benz. There was a recent recalls announced in 2023, however, my vehicle 2014 GL450 with now about 50K miles, was not included in the list." (NHTSA complaint 11654331, April 2025). If it happens to your car, check your VIN for open recalls at nhtsa.gov/recalls and report the problem to NHTSA; complaints are what trigger investigations.
Can the sunroof on the 2014 Mercedes-Benz GL-Class shatter or fail?
4 of the 40 owner complaints NHTSA has on file for the 2014 Mercedes-Benz GL-Class (10%) describe the sunroof or panoramic roof shattering, exploding or failing. One owner wrote: "As i was driving down on i-27 from amarillo to lubbock at 70 miles per hour on 6/22/2020 in pleasant weather and no vehicles either in front of me or beside me, the middle panel of the panoramic sunroof suddenly exploded with the glass shattering into pieces…" (NHTSA complaint 11330419, June 2020). If it happens to your car, check your VIN for open recalls at nhtsa.gov/recalls and report the problem to NHTSA; complaints are what trigger investigations.
Why is the check engine light on in my 2014 Mercedes-Benz GL-Class?
3 of the 40 owner complaints NHTSA has on file for the 2014 Mercedes-Benz GL-Class (7.5%) describe the check engine light coming on. One owner wrote: "The contact owns a 2014 Mercedes-Benz GL550. The contact stated that the check engine warning light was illuminated. The vehicle was taken to the dealer, where it was diagnosed with leaky exhaust valves." (NHTSA complaint 11611751, August 2024). If it happens to your car, check your VIN for open recalls at nhtsa.gov/recalls and report the problem to NHTSA; complaints are what trigger investigations.
Why does my 2014 Mercedes-Benz GL-Class idle rough, misfire or hesitate?
3 of the 40 owner complaints NHTSA has on file for the 2014 Mercedes-Benz GL-Class (7.5%) describe rough idling, misfires or hesitation when accelerating. One owner wrote: "Tl* the contact owns a 2014 mercedes benz gl450. the contact stated that the transmission jerked and hesitated to shift. the failure occurred numerous times. the vehicle was taken to the dealer several times." (NHTSA complaint 10667575, December 2014). If it happens to your car, check your VIN for open recalls at nhtsa.gov/recalls and report the problem to NHTSA; complaints are what trigger investigations.
Check your own GL-Class
Counts are a starting point, not a verdict: popular models collect more complaints because more of them are on the road, and NHTSA does not verify individual reports. To see whether a recall is still open on your car, enter your VIN at nhtsa.gov/recalls (U.S.) or your registration at check-vehicle-recalls.service.gov.uk (UK). Had a safety problem? Report it to NHTSA; complaints are what trigger investigations and recalls.
Data: NHTSA Office of Defects Investigation recall and complaint databases (public domain), DVSA anonymised MOT results (Open Government Licence v3.0), DVSA vehicle recalls (Open Government Licence v3.0), EU Safety Gate alerts (© European Union), retrieved October 25, 2026. Model year 2014 only.