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2015 Mercedes-Benz C-Class problems, recalls and owner complaints
What the 2015 Mercedes-Benz C-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
- 452owner complaints
- 11crash reports
- 2fire reports
- 20%fail the UK MOT
452 complaints, against an average of 169 for the other 14 Mercedes-Benz C-Class model years.
Every Mercedes-Benz C-Class model year with its number of owner complaints. Pick a year to compare.
What goes wrong with the 2015 Mercedes-Benz C-Class?
The components named most often in the 452 owner complaints. One complaint can name several, so the shares can add up to more than 100%.
What symptoms do 2015 Mercedes-Benz C-Class owners describe?
Found by reading the text of all 452 owner complaints. Tap a symptom for the answer, a real owner quote and any related recall.
- Does the 2015 Mercedes-Benz C-Class have rust or paint problems?57 owners · 12.6%
- Why is the check engine light on in my 2015 Mercedes-Benz C-Class?46 owners · 10.2%
- Why does my 2015 Mercedes-Benz C-Class smell of fuel or gas?37 owners · 8.2%
- Why does my 2015 Mercedes-Benz C-Class stall, lose power or shut off while driving?26 owners · 5.8%
- Can the sunroof on the 2015 Mercedes-Benz C-Class shatter or fail?18 owners · 4%
- Has the 2015 Mercedes-Benz C-Class had engine failures?15 owners · 3.3%
- Why does my 2015 Mercedes-Benz C-Class idle rough, misfire or hesitate?14 owners · 3.1%
Has the 2015 Mercedes-Benz C-Class been recalled?
NHTSA lists no safety recalls for the 2015 Mercedes-Benz C-Class as of October 25, 2026. Recalls can be issued at any time, so check your VIN before you rely on this.
Is the 2015 Mercedes-Benz C-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 panel located between the windshield and the panoramic sunroof might not have been bonded correctly during a…On affected vehicles the panel located between the windshield and the panoramic sunroof might not have been bonded correctly during a prior service repair.
Risk: On affected vehicles the panel located between the windshield and the panoramic sunroof might not have been bonded correctly during a prior service repair.
Fix: Check the front fixed element of the panoramic sliding sunroof and replace if necessary.
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 DVSAVehicles with a panoramic sunroofthe polycarbonate panel may not have been bonded correctly during a prior service repair
Risk: The polycarbonate panel located between the windshield and the panoramic sunroof may not have been bonded correctly during a prior service repair.
Fix: Remove the bonded panel and install a new polycarbonate panel if required.
UK DVSADiodes on the rectifier bridge of the alternator might fail
Risk: Diodes on the rectifier bridge of the alternator might fail.
Fix: Update the engine control unit software with an optimised alternator control strategy on the affected vehicles.
UK DVSAEngine control unit software to be updated
Risk: Improve the vehicle emissions via software updates.
Fix: Update the relevant control unit's software and if necessary replace the NOx sensors.
UK DVSAThe engine control unit software nay not meet specifications
Risk: The engine control unit software might not meet the specifications.
Fix: Update the diesel engine control unit software on the affected vehicles.
UK DVSAThe spring damper software may not meet specifications
Risk: The spring damper software might not meet specification affecting level sensors and headlight range.
Fix: Replace the spring damper control unit on affected vehicles.
UK DVSASoftware update to improve emissions
Risk: Improve the vehicle emissions via software updates.
Fix: Update the diesel engine control unit software and add a supplementary booklet for the operator's manual.
UK DVSAA lock nut may be cracked in the steering gear
Risk: A lock nut may be cracked in the steering gear.
Fix: The electric power steering is to be checked and if necessary replaced.
UK DVSATo improve emissions of the affected vehicles.certain calibrations of functionalities must be changed in the engine management
Risk: Improve the vehicle emissions via software updates.
Fix: Update the diesel engine control unit software and add a supplementary booklet for the operator's manual
UK DVSAAn electric line in the engine compartment may have been routed outside of the specification
Risk: An electric line in the engine compartment may have been routed outside of the specification.
Fix: Check the routing of the wiring harness at the prefuse box in the engine compartment and correct if necessary.
UK DVSAElectrical wiring in steering assembly may be insufficiently grounded
Risk: The steering column clock spring may break. This will cause warning messages to illuminate in the instrument cluster but in extreme instances it may cause the driver's airbag to deploy
Fix: .Affected vehicles will be recalled to be checked to ensure there is sufficient grounding of the steering components.
UK DVSAElectrical wiring in steering assembly may be insufficiently grounded
Risk: The steering column clock spring may break. This will cause warning messages to illuminate in the instrument cluster but in extreme instances it may cause the driver's airbag to deploy.
Fix: Affected vehicles will be recalled to establish sufficient grounding of the steering components
UK DVSASteering components may be insufficiently grounded
Risk: It has been determined that the steering airbag electrical components are insufficiently grounded. Failure of the steering column module clock spring could result in an inadvertent deployment of the driver airbag which may cause risk of injury to the driver and an increased risk of a potential collision.
Fix: On affected vehicles the manufacturer will fit a contact bridge to the outer race of the steering column top bearing which will provide correct grounding.
UK DVSAElectrical wiring in steering assembly may be insufficiently grounded
Risk: The steering column clock spring may break. This will cause warning messages to illuminate in the instrument cluster but in extreme instances it may cause the driver's airbag to deploy.
Fix: Affected vehicles will be recalled to establish sufficient grounding of the steering components.
UK DVSAElectrical wiring in steering assembly may be insufficiently grounded
Risk: The steering column clock spring may break. This will cause warning messages to illuminate in the instrument cluster but in extreme instances it may cause the driver's airbag to deploy.
Fix: Affected vehicles will be recalled to establish sufficient grounding of the steering components.
UK DVSAElectrical wiring in steering assembly may be insufficiently grounded
Risk: The steering column clock spring may break. This will cause warning messages to illuminate in the instrument cluster but in extreme instances it may cause the driver's airbag to deploy.
Fix: Affected vehicles will be recalled to establish sufficient grounding of the steering components.
UK DVSAElectrical wiring in steering assembly may be insufficiently grounded
Risk: The steering column clock spring may break. This will cause warning messages to illuminate in the instrument cluster but in extreme instances it may cause the driver's airbag to deploy.
Fix: Affected vehicles will be recalled to establish sufficient grounding of the steering components.
UK DVSAAxle mounting may break
Risk: Under extreme starting conditions (such as full throttle) on wet road surfaces AND with repeated short term rear wheel spin strong torque peaks in the powertrain may occur.This may cause an axle mounting flange to break and possible loss of drive.
Fix: On affected vehicles update the ESP and chassis control units.
UK DVSAStarting current limiter may overload
Risk: Where the car incurs severe engine damage resulting in the engine failing to turn over (engine seizure) and if the driver repeatedly attempts to start the engine despite the engine not cranking the very high electrical current could lead to overheating of the starting current limiter and the potential for a fire.
Fix: Recall the vehicles that are likely to be affected and install an additional fuse in the electrical line to the starter.
UK DVSAElectric power steering motor defective
Risk: Contacts inside the electric power steering motor may not have been correctly formed. Failure of these contacts would cause the loss of power steering assistance.If this happens a warning lamp will illuminate
Fix: Replace the electric power steering motor on affected vehicles.
UK DVSASteering coupling may become loose
Risk: The threaded connection for the steering column coupling to the steering rack pinion may not be tightened correctly. Overtime time the connection could loosen and fall out allowing a situation where the steering control could be lost.
Fix: Recall the vehicles that are likely to be affected and check the tightness of the threaded connection for the steering column coupling. Where necessary the joint will be removed and inspected. If not serviceable it will be replaced. A new threaded connection will be used where the tightness is not correct.
UK DVSAFaulty control unit may cause vehicle to perform outside specification
Risk: Where a control unit coding was updated in a workshop between 3 December 2016 and 5 December 2016 the coding may not correspond to the specification and may trigger unplanned action in the vehicle. The safety and emissions systems may not react as design intent.
Fix: Recall the vehicles that are likely to be affected and update the software in the corresponding control units.
UK DVSALoss of power steering supportYears estimated
Risk: It has been identified that the pins within the electric power assisted steering control unit may not have been contact welded correctly. This can result in an open circuit which will lead to a loss of power steering assistance and possible loss of control of the vehicle.
Fix: Recall all affected vehicles and replace electric power assisted steering.
UK DVSAFlammable vapour may ignite
Risk: The threaded connection on the Adblue filler pipe and ground cable for the fuel tank access may not be correctly tightened on vehicles with diesel engine OM651. It is possible for the connection to work loose and fail thereby causing the possibility of an electrostatic discharge. In extreme conditions there is a possibility of fire.
Fix: Recall the vehicles that are likely to be affected to check and where necessary correct the connection of the Adblue filler pipe and ground cable.
UK DVSAFuel may leak
Risk: A high pressure fuel line to the fuel pump may work looses and allow diesel to leak
Fix: On affected vehicles replace fuel line
UK DVSARisk of fire
Risk: The threaded connection of the battery ground may not be tightened correctly due to deviation in the tightening angle monitoring. In the event of a poor ground of the battery line a temporarily higher transition resistance could lead to the formation of sparks and local heating. This would increase the risk of fire.
Fix: Recall the vehicles that are likely to be affected and check the ground connection of the battery line and if necessary replace the ground connection.
UK DVSARisk of fire
Risk: The high pressure fuel lines have not been manufactured to the correct specification which over time can lead to crack formation and fuel leaking. Fuel escaping in the presence of an ignition source could lead to fire.
Fix: Recall the vehicles that are likely to be affected and replace the high pressure fuel lines.
UK DVSAEngine may fail
Risk: The camshaft could break and damage the engine due to it not being manufactured to the correct specification. If the condition occurs it will lead to a sudden loss of drive thereby increasing the risk of a collision.
Fix: Recall the vehicles that are likely to be affected and replace the exhaust camshaft.
UK DVSAOil may leak
Risk: On affected vehicles the transmission oil cooler return pipe may not have been mounted correctly. It is possible vibration may cause the pipe to fail and leak oil.
Fix: Correctly mount oil cooler pipes.
UK DVSASide restraint system may not function as intended
Risk: The threaded connection of the crash sensors at the B-pillars may not be to specification. There is a possibility that the side restraint system may trigger too late or not at all in the event of a side impact which may pose an increased risk of injury for the vehicle occupants.
Fix: Recall the vehicles that are likely to be affected to check and where necessary correct the threaded connection of the crash sensors at both the left and right B-pillars.
UK DVSAEngine may stall
Risk: It is possible on certain petrol (gasoline) vehicles that the mounting hooks for the jet pump may not have been manufactured to specification. The jet pump is mounted on top of the fuel delivery module in the fuel tank and if the mounting hooks were to fail it will result in the jet pump detaching from the module and a possible fall in fuel pressure. This fall in fuel pressure could either result in the engine not starting or in worst cases causing the engine to cut out or stall. This could affect the drivers ability to control the vehicle.
Fix: Recall all likely to be affected vehicles to install an additional clip to the jet pump.
UK DVSAVehicle may shut down
Risk: Due to a software code error it is possible that the 1.6ltr 4 cylinder diesel engines may suffer a stalling situation during the warm-up phase and where the engine is subjected to high load requirements. However if the engine does stall it can be immediately restarted and the vehicle can be driven without restrictions. Furthermore all safety systems remain fully functional.
Fix: Recall all affected vehicles to update the engine control unit software.
UK DVSAOil may leak
Risk: On certain diesel engines the 'O' ring may not have been produced to the correct specification. This may allow oil to leak and contaminate the environment. If excessive oil is lost engine damage may occur.
Fix: On affected vehicles replace the chain tensioner sealing ring.
UK DVSASteering control may be affected
Risk: It is possible that the steering column coupling lock may not have been installed correctly. The driver will recieve warning of the issue by noise. However in extreme circumstances it is possible that steering control of the vehicle could be affected.
Fix: Recall all affected vehicles to check and if required replace the steering coupling.
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 GateFaulty configurations of the control units (traction systems, signal recording triggering modules, engine control units and headlights)…Faulty configurations of the control units (traction systems, signal recording triggering modules, engine control units and headlights) could cause one or more control units to malfunction, which could increase the risk of an accident. The exhaust emissions exceed the legal limits, posing a risk to the environment.
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 polycarbonate roof panel located between the windscreen and the panoramic roof may not have been bonded correctly to the vehicle…The polycarbonate roof panel located between the windscreen and the panoramic roof may not have been bonded correctly to the vehicle during a prior repair. In such cases, the adhesive bonding could gradually deteriorate and the panel could become detached from the vehicle, posing a risk to other road users.
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 maximum permissible operating temperature of individual diodes on the alternator rectifier bridge could be exceeded and the diodes…The maximum permissible operating temperature of individual diodes on the alternator rectifier bridge could be exceeded and the diodes could subsequently fail. Consequently, an improper flow of current from the on-board electrical system battery through the alternator to the vehicle earth could occur.As a result, the windings in the alternator stator could be heated to such an extent that an outbreak of fire cannot be ruled out.
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 level sensors of the vibration damper software may not have been installed in the correct direction which can cause the headlamp…The level sensors of the vibration damper software may not have been installed in the correct direction which can cause the headlamp levelling to be outside the tolerance limits. If the vehicle is used with the maximum number of passengers, this will result in the oncoming traffic being affected by glare.
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 GateIn vehicles with rear-wheel drive, a lock nut in the steering gear may be cracked.Consequently, when the steering is placed under high forces it could break, which would block the steering gear and increase the risk of 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 GateThere may be cracks in a securing nut in the steering gear of rear-wheel-drive vehicles.The nut could consequently break if the steering system is subject to a very high lateral force, which could result in rotating parts in the steering gear affecting the casing and thereby blocking the steering system.
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 steering column is not sufficiently earthed.As a result, in the event of an electrostatic discharge, the driver's airbag may be triggered when not required. This could cause 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 starter current limiter may be overloaded and overheat.As a consequence, the surrounding components could ignite, leading to a 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: 01/09/2017
EU Safety GateThe steering coupling might not have been screwed to the correct torque specification.As a consequence, the steering coupling can become detached from the steering wheel axle and it would become impossible to steer the vehicle.
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 GateThe power-assisted steering control units may have been fitted with defectively welded contacts.As a result, a permanent electrical connection between the contacts cannot be guaranteed, which could lead to loss of support to the power-assisted steering and thus an increased risk of accidents.
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 central lip of the front spoiler can become detached while driving and fall onto the road, which may cause accidents to other vehicles.
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 on-board high-voltage battery charger may malfunction.As a consequence it may incorrectly detect that an external charging cable has been inserted. If the vehicle is travelling at a speed of less than 5 km/h, this could lead to the activation of the park-lock function which would prevent further movement of the vehicle.
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 connection between the high-pressure pipe from the fuel rail and the high-pressure pump may loosen.If fuel leaks onto the road as a result, it could increase the risk of accidents for following vehicles.
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 GateCracks may form in the high-pressure fuel pipes leading to a fuel leak and a vehicle 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 GateThe crash sensors on the 'B' pillars were not screwed correctly into place in the vehicles affected.In the event of a side impact this might possibly result in the side restraint systems being triggered either too late or not at all, possibly leading to an increased risk of injury for the driver and passengers.
Measures: Type of economic operator taking notified measure(s): Other; Category of measure(s): Recall of the product from end users; Date of entry into force: Unknown
EU Safety GateThe gasket seal for the engine's chain tensioner may display incorrect settling behaviour.Over time, this may result in the chain tensioner detaching from the threaded hole on the cylinder head and the leakage of engine oil. The loss of large amounts of engine oil may contaminate the road, leading to a possible hazard for traffic following behind.
Measures: Type of economic operator taking notified measure(s): Other; Category of measure(s): Recall of the product from end users; Date of entry into force: Unknown
EU Safety GateThe steering coupling locking mechanism may not have been correctly fitted during vehicle manufacture.This could restrict the steering of the vehicle and in extreme cases may lead to loss of steering control.
Measures: Type of economic operator taking notified measure(s): Other; Category of measure(s): Recall of the product from end users; Date of entry into force: Unknown
How often does the 2015 Mercedes-Benz C-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 2015, 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 2015 Mercedes-Benz C-Class owners report?
12 of the 452 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.
Driver rear side rusted and cracked subframe.
To Mercedes-Benz USA Customer Care, I am requesting a formal review and written explanation concerning case #24524936 and the approximately $6,000+ starter-wiring repair on my vehicle. Mercedes-Benz’s August 2017 recall notice for campaign 2017080002, NHTSA recall 17V114, states that the starting-current limiter can overheat under specified conditions, potentially causing surrounding components to melt and creating a fire risk. The notice further states that the authorized dealer will install an additional fuse in the electrical line to the starter at no charge. Because my vehicle has…
The rear subframe on the car is rusting badly and the Mercedes certified mechanic states that the entire frame needs replacement. With braking, the car could fishtail and be in a serious crash. The two model years prior to mine have had similar problems and a recall has been established for those years. I am asking the NHTSA to work with Mercedes-Benz to establish a recall for the 2015 C class before someone is injured as a result of this defect.
The contact owns a 2015 Mercedes-Benz C300. The contact stated that while driving at an undisclosed speed, there was an abnormal sound coming from the vehicle and the vehicle became difficult to maneuver. The failure had occurred on several occasions. The vehicle was taken to an independent mechanic where it was diagnosed that there was two large holes and rust located on the rear subframe, an unknown part needed to be realigned and needed to be replaced. The vehicle was towed to a dealer where it was confirmed that the rear subframe and another unknown part needed to be replaced. The…
The rear structural subframe on my vehicle has experienced severe, premature corrosion perforation (rotting from the inside out), resulting in a major compromise of the vehicle’s structural integrity. This subframe is a critical safety component that supports the entire rear suspension, differential, and braking components. The subframe has rusted to the point of developing holes and structural cracks under normal operating conditions. This severe deterioration creates an immediate safety hazard, as a total failure or snapping of the subframe while driving can cause a sudden loss of vehicle…
I was driving my car was sputtering or trying to shut off while I press the gas and I let go of the gas and it catches and stayed on. I took it to the dealership and they said they found nothing wrong. May 3rd around 12pm im driving on the freeway and as im getting on the express lane going 60 it dies and I couldn't move the steering wheel and I slammed into a guardrail. After doing research my car (vin [XXX] ) had multiple recals from the fuel pump and steering wheel and the dealership never fixed or checked any recalls before selling it to me. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF…
Component/System Failure: The rear subframe on my 2015 Mercedes-Benz C300 failed due to severe corrosion/rusting. The subframe is available for inspection upon request. Safety Risk: This failure created a serious and immediate safety hazard. While driving at highway speeds, the structural integrity of the vehicle was compromised, I had to break and lost control of the vehicle and almost causing a crash. This also posed a danger to other drivers on the road. The condition was severe enough that I believe I narrowly avoided a major accident. Confirmation of Problem: The issue has been confirmed…
Exhaust camshaft pulse wheel shifted on camshaft. Replacement of camshaft, positioner, oil control valve, timing chain and chain tension was recommended.
When buying this car from Auto Shoppers, they was an airbag light on but dealership said it was a sensor from auto detail on car or recall. Got diagnostic from Mercedes Benz, findings was there was no air bag in place on drivers side. Dealership did not tell us there was no air bag and only was a sensory/recall and are refusing to fix it.
Fuel pressure pump hose on top of the engine leaks gasoline this is a serious safety concern the hot engine can catch fire easily, I noticed due intoxicating vapors in cabin while driving because car takes air from q side of the engine to the cabin. The car only has 28k miles on it.
After strong fuel odor in interior of car, inspected the engine and discovered fuel in the top of the engine this is a serious safety concern due possible car fire. The leak appear to be due failure of a top engine gasoline hose due low quality. The car barely has 30k miles .
The car suddenly glitched and locked itself—with my dog, my purse, my phone, everything—inside on an extremely hot day. There was no one around, and it was terrifying. I had opened the passenger door for my dog to climb in, and as I walked around to the driver’s side, the doors somehow locked on their own. Panic set in immediately. My dog, my phone, and my purse were all inside, and I had no way to call for help. We had just finished a walk, and then this happened out of nowhere. I had to run around searching for someone who could help. Eventually, I found a stranger who called the police, and…
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2015 Mercedes-Benz C-Class: questions owners ask
Is the 2015 Mercedes-Benz C-Class reliable?
NHTSA data alone cannot rate reliability, but it shows what owners reported. Owners filed 452 complaints with NHTSA about the 2015 Mercedes-Benz C-Class; the most common categories were engine (134, 29.6%), structure (78, 17.3%), fuel/propulsion system (71, 15.7%). There are no safety recalls listed for this model year. 11 complaints mention a crash, 2 mention a fire, 10 injuries were reported.
What are the most common problems with the 2015 Mercedes-Benz C-Class?
Across 452 owner complaints filed with NHTSA, the categories mentioned most often are engine (29.6% of complaints), structure (17.3% of complaints), fuel/propulsion system (15.7% of complaints), electrical system (12.2% of complaints), suspension (7.7% of complaints). One complaint can name several components.
Does the 2015 Mercedes-Benz C-Class have any recalls?
As of October 2026, NHTSA lists no safety recalls for the 2015 Mercedes-Benz C-Class. Recalls can be issued at any time, so check your VIN at nhtsa.gov/recalls.
Does the 2015 Mercedes-Benz C-Class have rust or paint problems?
57 of the 452 owner complaints NHTSA has on file for the 2015 Mercedes-Benz C-Class (12.6%) describe rust, corrosion or peeling paint. One owner wrote: "The rear subframe on the car is rusting badly and the Mercedes certified mechanic states that the entire frame needs replacement. With braking, the car could fishtail and be in a serious crash." (NHTSA complaint 11766545, September 2026). 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 2015 Mercedes-Benz C-Class?
46 of the 452 owner complaints NHTSA has on file for the 2015 Mercedes-Benz C-Class (10.2%) describe the check engine light coming on. One owner wrote: "Check Engine light came on recently, fault code P052E is identified by scanner. Car has 60,000 miles on original it. MB dealer wants to charge $300 for diagnostics, repair job (parts and labor) may cost over $2,000." (NHTSA complaint 11669468, June 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.
Why does my 2015 Mercedes-Benz C-Class smell of fuel or gas?
37 of the 452 owner complaints NHTSA has on file for the 2015 Mercedes-Benz C-Class (8.2%) describe a fuel or gasoline smell, or a fuel leak. One owner wrote: "After strong fuel odor in interior of car, inspected the engine and discovered fuel in the top of the engine this is a serious safety concern due possible car fire. The leak appear to be due failure of a top engine gasoline hose due low quality." (NHTSA complaint 11720037, February 2026). 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 2015 Mercedes-Benz C-Class stall, lose power or shut off while driving?
26 of the 452 owner complaints NHTSA has on file for the 2015 Mercedes-Benz C-Class (5.8%) describe the engine stalling, losing power or shutting off while driving. One owner wrote: "Engine check light code: P052E Crankcase Ventilator / oil separator. Huge problem could cause the engine to stall while driving. Could lead to an accident if you are trying to merge on the highway and the engine stalls out." (NHTSA complaint 11529922, July 2023). 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 2015 Mercedes-Benz C-Class shatter or fail?
18 of the 452 owner complaints NHTSA has on file for the 2015 Mercedes-Benz C-Class (4%) describe the sunroof or panoramic roof shattering, exploding or failing. One owner wrote: "The sunroof panel being cracked on this car is a well known and documented issue. There have been several recalls for it just not on my specific model." (NHTSA complaint 11751245, July 2026). 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.
Has the 2015 Mercedes-Benz C-Class had engine failures?
15 of the 452 owner complaints NHTSA has on file for the 2015 Mercedes-Benz C-Class (3.3%) describe complete engine failure or a replaced engine. One owner wrote: "Was driving on the highway , car was running for about 7-10 min from the start , and when took off from exit , car started to shake and when pulled off to the side of the road , the car won’t start anymore , dealership said that engine failed ," (NHTSA complaint 11563918, January 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 2015 Mercedes-Benz C-Class idle rough, misfire or hesitate?
14 of the 452 owner complaints NHTSA has on file for the 2015 Mercedes-Benz C-Class (3.1%) describe rough idling, misfires or hesitation when accelerating. One owner wrote: "I was driving my car was sputtering or trying to shut off while I press the gas and I let go of the gas and it catches and stayed on. I took it to the dealership and they said they found nothing wrong." (NHTSA complaint 11736219, May 2026). 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 C-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 2015 only; combines NHTSA's entries for C-CLASS and C-CLASS SAB.