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2018 Mercedes-Benz S-Class problems, recalls and owner complaints
What the 2018 Mercedes-Benz S-Class has been recalled for, how often it fails the UK MOT and what owners report, from official government data. Updated October 25, 2026.
- 1safety recall
- 33owner complaints
- 2crash reports
- 2fire reports
- 9%fail the UK MOT
33 complaints, against an average of 21 for the other 13 Mercedes-Benz S-Class model years.
Every Mercedes-Benz S-Class model year with its number of owner complaints. Pick a year to compare.
What goes wrong with the 2018 Mercedes-Benz S-Class?
The components named most often in the 33 owner complaints. One complaint can name several, so the shares can add up to more than 100%.
What symptoms do 2018 Mercedes-Benz S-Class owners describe?
Found by reading the text of all 33 owner complaints. Tap a symptom for the answer, a real owner quote and any related recall.
Has the 2018 Mercedes-Benz S-Class been recalled?
1 U.S. safety recall. Repairs are free at a franchised dealer; some are done over the air.
Power Train: Driveline: Universal Joint Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2018 E 400 4MATIC Sedan, E 400 4MATIC Wagon, E 400 4MATIC Cabriolet, E 400 4MATIC Coupe, 2018-2020 Maybach S 560 4MATIC, S 560 4MATIC Coupe, S 450 4MATIC, 2019-2020 E 450 4MATIC Sedan, E 450 4MATIC Wagon, E 450 4MATIC Coupe, and E 450 4MATIC Cabriolet vehicles. The drive shaft universal joint may break, resulting in a sudden loss of drive power.
Risk: A sudden loss of drive power increases the risk of a crash.
Fix: Dealers will inspect and replace the drive shaft as necessary, free of charge. Interim letters, notifying owners of the safety risk, were mailed May 22, 2026. Additional letters will be sent once the remedy is available. Owners may contact MBUSA customer service at 1-800-367-6372. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning April 10, 2026.
Is the 2018 Mercedes-Benz S-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 DVSACoolant pump might have a leakage between the vacuum system and the coolant circuit
Risk: On certain vehicles with a Diesel engine the coolant pump which is controlled by vacuum might have a leakage between the vacuum system and the coolant circuit.
Fix: Update the software of the coolant pump and replace the electrical switch valve on the affected vehicles.
UK DVSAThe behaviour of the emergency call system might not meet specifications
Risk: The behaviour of the emergency call system might not meet specifications.
Fix: Update the software of the communication module for the emergency call system.
UK DVSAThe behaviour of the emergency call system might not meet specifications
Risk: The behaviour of the emergency call system might not meet specifications.
Fix: Update the software of the communication module for the emergency call system.
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 DVSAThe behaviour of the emergency call system might not meet specifications
Risk: The behaviour of the emergency call system might not meet specifications.
Fix: Update the software of the communication module for the emergency call system.
UK DVSAThe behaviour of the emergency call system might not meet specifications
Risk: The behaviour of the emergency call system might not meet specifications.
Fix: Update the software of the communication module for the emergency call system.
UK DVSAThe behaviour of the emergency call system might not meet specifications
Risk: The behaviour of the emergency call system might not meet specifications.
Fix: Update the software of the communication module for the emergency call system.
UK DVSAThe behaviour of the emergency call system might not meet specifications
Risk: The behaviour of the emergency call system might not meet specifications.
Fix: Update the software of the communication module for the emergency call system.
UK DVSAThe behaviour of the emergency call system might not meet specifications
Risk: The behaviour of the emergency call system might not meet specifications.
Fix: Update the software of the communication module for the emergency call system.
UK DVSAThe behaviour of the emergency call system might not meet specifications
Risk: The behaviour of the emergency call system might not meet specifications.
Fix: Update the software of the communication module for the emergency call system.
UK DVSAThe emergency call system might not meet specifications
Risk: The behaviour of the emergency call system might not meet specifications.
Fix: Update the software of the communication module for the emergency call system.
UK DVSAThe behaviour of the emergency call system might not meet specifications
Risk: The behaviour of the emergency call system might not meet specifications.
Fix: Update the software of the communication module for the emergency call system.
UK DVSAThe communication module may be deactivated
Risk: The communication module may be deactivated
Fix: Carry out a check of the configuration of the communication module on affected vehicles and if necessary activate the communication module.
UK DVSAThe emergency call system (ecall) does not meet the specification
Risk: On affected vehicles the software of the communication module for the emergency call system does not meet the specification
Fix: Update the software of the communication module for the emergency call system
UK DVSAThe seat belt warning function does not meet the specification
Risk: The seat belt warning function does not meet the specification
Fix: Activate the correct seat belt warning scenario in the instrument cluster
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 data documenting the correct mounting of the turbocharger oil feed as well as the oil return line may be missing
Risk: The HV battery pack can overheat and result in the venting of hot gas which can ignite vehicle components or in extreme cases the entire vehicle.
Fix: To prevent a vehicle fire the vehicles should not be charged using the external charging cable and the vehicles should only be driven using the default Auto EV mode only
UK DVSAThe material of two closure plugs on the engine may not withstand the maximum loads whilst driving
Risk: The material of two closure plugs on the engine might not withstand the maximum loads while driving.
Fix: Rework the closure plugs on the engine on the affected vehicles
UK DVSAThe threaded connection of a chain wheel to the crankcase might not meet specifications
Risk: The threaded connection of a chain wheel to the engine crankcase might not meet specifications.
Fix: Replace the Engine of affected vehicles
UK DVSAOn activation of the curtain air bag the pillar cover may detach
Risk: The curtain airbag might not deploy as intended.
Fix: Check the installation of the pillar covers and correct if necessary.
UK DVSAThe software of the radar control unit may not meet specification
Risk: ; The software of the radar control unit might not meet the specification
Fix: Update the software of the radar sensor control unit on the affected vehicles.
UK DVSATo achieve an improvement in the emissions via software updates
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 DVSASwitches in certain seat belt buckles may not have been manufactured to specifications
Risk: The switches in certain seat belt buckles might not have been manufactured according to specifications.
Fix: The affected seat belt buckles are to be replaced.
UK DVSASwitches in certain seat belt buckles may not have been manufactured to specifications
Risk: The switches in certain seat belt buckles might not have been manufactured according to specifications.
Fix: The affected seat belt buckles are to be replaced.
UK DVSAA reset in the cpc control unit could occur whilst driving
Risk: The ECO Start-Stop function may be disabled and cause the vehicle to stall.
Fix: The affected vehicles are to be recalled and the software updated.
UK DVSAHands off detection function might not meet specifications
Risk: The Hands-off-Detection function (HoD) might not meet specifications.
Fix: The position of the steering boot will be checked and corrected if necessary.
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 DVSACertain parameters of the active lane keeping assist within the multipurpose camera software may not meet specification
Risk: Active Lane Keeping Assist might not initiate a brake intervention in case of an unwanted lane change.
Fix: Update the multipurpose camera software of affected vehicles.
UK DVSATwo nuts attaching the busbars within the prefuse box in the trunk may not have been installed
Risk: Two nuts attatching the busbars within the prefuse box may not have been installed
Fix: Check the prefuse box and replace if necessary on affected vehicles
EU Safety GateThe vacuum-controlled coolant pump may not be tightly sealed between the coolant and vacuum circuits.This may result in the coolant leaking into the vacuum circuit leading to an electrochemical reaction, increasing the risk of 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 GateA trapped particle may damage the sealing between the fuel rail and fuel injector, which could cause fuel to leak into the engine…A trapped particle may damage the sealing between the fuel rail and fuel injector, which could cause fuel to leak into the engine compartment. Consequently, leaking fuel may come into contact with hot parts of the engine, increasing the risk of 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 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 GateDue to the lack of documentation, there is no confirmation that the screw connections of the turbocharger’s oil-supply and oil-return…Due to the lack of documentation, there is no confirmation that the screw connections of the turbocharger’s oil-supply and oil-return pipes were correctly executed during the assembly process. In the event of a loose screw connection, oil might leak at the oil-supply and/or oil-return pipe of the turbocharger.The leaking oil might then come into contact with hot components, increasing the risk of 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 elastomer material of the oil feed line for the exhaust-gas turbocharger may not comply with the specification, allowing oil to leak…The elastomer material of the oil feed line for the exhaust-gas turbocharger may not comply with the specification, allowing oil to leak out.Consequently, the leaking oil could come into contact with hot components, increasing the risk of 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 material used in two closure plugs on the engine might not be able to withstand the maximum load under dynamic driving conditions,…The material used in two closure plugs on the engine might not be able to withstand the maximum load under dynamic driving conditions, allowing up to 9 liters of engine oil to escape around the plugs. Consequently, the escaped oil could leak onto the road, posing a risk to the following traffic.
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 fixing screw connecting the base holder of the manual control device may not be correctly fitted.This can impair the control over the vehicle, 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 A, B and C pillar trims may not have been correctly fastened.In the event of an accident, the trims may impair the efficacy of the window airbags. If the window airbags are deployed, the trims might be detached and propelled into the passenger compartment, increasing the risk of injuries.
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 sensors in some seatbelt locks may not have been adequately manufactured.Consequently, they might not detect a correctly fastened seatbelt and thus not activate the pre-tensioner systems (electric and pyrotechnic). In the event of an accident, these might not work leading to a limited restraint capacity and increasing the risk of injury to the occupants.
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 GateOn certain vehicles, the nuts to attach the conductor rails inside the fuse box in the boot may not have been installed.This could lead to increased contact resistance between the conductor rails and, as a consequence, cause a fire or failure in the engine functioning, seat belt functions and the dashboard, leading to an increased risk of accident and injury.
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 the event of a crash, the disconnection of the power supply by the pyrofuse prevents the automatic unlocking of the doors and the…In the event of a crash, the disconnection of the power supply by the pyrofuse prevents the automatic unlocking of the doors and the operation of other safety features. This could increase the risk of injury for the occupants.
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 2018 Mercedes-Benz S-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 2018, 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 2018 Mercedes-Benz S-Class owners report?
12 of the 33 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.
The contact owns a 2018 Mercedes-Benz S560 4MATIC. The contact stated that the vehicle had experienced failures associated with NHTSA Campaign Number: 26V216000 (Power Train). The vehicle was taken to a dealer, and the contact was informed that the part to do the recall repair was not yet available. The contact was informed that once the parts for the recall repair were available, vehicle owners would be notified. The vehicle was not repaired. The contact attempted to contact the manufacturer by telephone and by email; however, no response was received. The failure mileage was unavailable.
Hello as of now there was no accidents just read Reading the Recalls it is very serious I take in the vehicle to the Mercedes Benz dealership 4-29- 26 They did nothing but said they would get in contact with me once they receive the remedy
The contact owns a 2018 Mercedes-Benz S560 4Matic. The contact stated that while performing a brake service, the contact became aware that there was fluid leaking underneath the vehicle, coming from the driveshaft. Additionally, the contact stated that the vehicle was shaking while driving due to the failure. The contact referenced NHTSA Campaign Number: 26V216000 (POWER TRAIN); however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer…
Excessive engine oil lead from the back seal. Also, slow coolant leak. The car has a low mileage of 46k.
Vehicle had a low tire, vehicle indicated it needed to be driven for recalibration of the sensor(s). Took vehicle for short drive up two lane road. Turned around and headed back to where was staying and upon acceleration the vehicle seemed to have pulled off the road but come to find out it didn't at all go off the right side of the roadway. The vehicle sort of jerked and went to the left, causing me to travel over the opposite lane and into the ditch on opposite side of the road, then when pulling out of the ditch the vehicle flipped and overturned skidding on it's top side along the roadway…
The Squib For PRE-SAFE(R) Pulse '' Front Passenger'' Has A S560 w222 model airbag sensors problem an defective parts needs be investigated
My 2018 S560 Mercedes occasionally misfires upon acceleration. This has happened at six times over the past three years. When this happens, the engine loses power, starts to shake, and the check engine light comes on. This happened when I was trying to pass a car on US 301 a week ago nearly causing a head on collision as I tried to get back into the right lane. The problem occurs without any warning. This first happened at 64,242 miles, then at 104833, next 108599, then 119,012, then 121,726, and finally at 126580 (my current mileage). Each time I have gone to a Mercedes mechanic. They have…
The engine failed while my friend was driving. The car is available for inspection. My friend almost got into a car accident because the car started shaking and the steering wheel closed up before the engine completely failed. Additionally, the airbags did not go off. It could've been a fatal accident because he was driving on the highway. The problem was confirmed by an independent service center. The vehicle has been inspected by a certified mechanic. The car has had problems since I bought it. The tire pressure would always go down. The steering wheel and car would shake at times, and the…
Driving on interstate 95 in South Carolina in the high speed lane Saturday December 2 2023 late morning. Adaptive cruise control, lane keep assist, self driving modes engaged. No traffic in front, large semi truck next to passenger side about equal to side mirror, I believe it was advancing. Car sounds collision warning beep and executes full emergency barking with seat belt tensioners emergency retraction. The system quickly releases the brakes which may have been the result of me pressing the gas pedal, I am not sure as this all happened in fractions of seconds. I disengaged all self driving…
Steering wheel became extremely stiff to turn and a message that read “steering malfunction increase physical effort” appeared while driving at around 30 mph while in a vacation trip, not only was this extremely unsettling since it happened suddenly but I had to act fast to avoid a collision with other vehicles, once I made it to a safe location I shut the vehicle off and restarted after 15 minutes and it seem drivable again but left me extremely concerned as I am 500 miles away from with no dealerships open to have it looked since is Memorial Day.
The contact owns a 2018 Mercedes-Benz S450. The contact stated while driving at an undisclosed speed, the contact attempted to depress the brake; however, the vehicle failed to decelerate and slow as needed. The contact stated that the brakes failed to work as needed. The contact stated that the “Service Required” message was displayed on the instrument panel. The vehicle was taken to a dealer and was diagnosed with electronic parking brake failure. The manufacture was not notified of the failure. The failure mileage was approximately 40,000.
Vehicle Check Engine Light turned on a Vehicle Lost power. Vehicle often hesitates upon acceleration. Convertible Top does not close as well intermittently.
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2018 Mercedes-Benz S-Class: questions owners ask
Is the 2018 Mercedes-Benz S-Class reliable?
NHTSA data alone cannot rate reliability, but it shows what owners reported. Owners filed 33 complaints with NHTSA about the 2018 Mercedes-Benz S-Class; the most common categories were engine (7, 21.2%), service brakes (5, 15.2%), steering (5, 15.2%). There is 1 safety recall. 2 complaints mention a crash, 2 mention a fire, 1 injury was reported.
What are the most common problems with the 2018 Mercedes-Benz S-Class?
Across 33 owner complaints filed with NHTSA, the categories mentioned most often are engine (21.2% of complaints), service brakes (15.2% of complaints), steering (15.2% of complaints), power train (12.1% of complaints), suspension (12.1% of complaints). One complaint can name several components.
Does the 2018 Mercedes-Benz S-Class have any recalls?
Yes. NHTSA lists 1 recall for the 2018 Mercedes-Benz S-Class; the most recent (campaign 26V216000, 2026-04-03) concerns Power Train: Driveline: Universal Joint. Recall repairs are free at a franchised dealer; check your VIN at nhtsa.gov/recalls.
Why is the check engine light on in my 2018 Mercedes-Benz S-Class?
4 of the 33 owner complaints NHTSA has on file for the 2018 Mercedes-Benz S-Class (12.1%) describe the check engine light coming on. One owner wrote: "Vehicle Check Engine Light turned on a Vehicle Lost power. Vehicle often hesitates upon acceleration. Convertible Top does not close as well intermittently." (NHTSA complaint 11506663, February 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.
Why does my 2018 Mercedes-Benz S-Class idle rough, misfire or hesitate?
4 of the 33 owner complaints NHTSA has on file for the 2018 Mercedes-Benz S-Class (12.1%) describe rough idling, misfires or hesitation when accelerating. One owner wrote: "Vehicle Check Engine Light turned on a Vehicle Lost power. Vehicle often hesitates upon acceleration. Convertible Top does not close as well intermittently." (NHTSA complaint 11506663, February 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.
Check your own S-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 2018 only; combines NHTSA's entries for S 560 4MATIC, S-CLASS and S-CLASS COUPE.